{"id":260,"date":"2007-10-06T00:00:00","date_gmt":"2007-10-06T00:00:00","guid":{"rendered":"http:\/\/www.strongd.net\/?p=260"},"modified":"2007-10-06T00:00:00","modified_gmt":"2007-10-06T00:00:00","slug":"MySQL \u670d\u52a1\u5668\u8c03\u4f18","status":"publish","type":"post","link":"https:\/\/www.strongd.net\/?p=260","title":{"rendered":"MySQL \u670d\u52a1\u5668\u8c03\u4f18"},"content":{"rendered":"<p><P>2007 \u5e74 7 \u6708 30 \u65e5<\/P><br \/>\n<BLOCKQUOTE>\u5982\u4eca\uff0c\u5f00\u53d1\u4eba\u5458\u4e0d\u65ad\u5730\u5f00\u53d1\u548c\u90e8\u7f72\u4f7f\u7528 LAMP\uff08Linux\u00ae\u3001Apache\u3001MySQL \u548c PHP\/Perl\uff09\u67b6\u6784\u7684\u5e94\u7528\u7a0b\u5e8f\u3002\u4f46\u662f\uff0c\u670d\u52a1\u5668\u7ba1\u7406\u5458\u5e38\u5e38\u5bf9\u5e94\u7528\u7a0b\u5e8f\u672c\u8eab\u6ca1\u6709\u4ec0\u4e48\u63a7\u5236\u80fd\u529b\uff0c\u56e0\u4e3a\u5e94\u7528\u7a0b\u5e8f\u662f\u522b\u4eba\u7f16\u5199\u7684\u3002\u8fd9\u4efd <A href=\"http:\/\/www.ibm.com\/developerworks\/cn\/views\/linux\/articles.jsp?view_by=search&amp;search_by=LAMP+%E7%B3%BB%E7%BB%9F%E6%80%A7%E8%83%BD%E8%B0%83%E4%BC%98\"><FONT color=#5c81a7>\u5171\u4e09\u90e8\u5206\u7684\u7cfb\u5217\u6587\u7ae0<\/FONT><\/A> \u5c06\u8ba8\u8bba\u8bb8\u591a\u670d\u52a1\u5668\u914d\u7f6e\u95ee\u9898\uff0c\u8fd9\u4e9b\u914d\u7f6e\u4f1a\u5f71\u54cd\u5e94\u7528\u7a0b\u5e8f\u7684\u6027\u80fd\u3002\u672c\u6587\u662f\u672c\u7cfb\u5217\u6587\u7ae0\u7684\u7b2c\u4e09\u90e8\u5206\uff0c\u4e5f\u662f\u6700\u540e\u4e00\u90e8\u5206\uff0c\u5c06\u91cd\u70b9\u8ba8\u8bba\u4e3a\u5b9e\u73b0\u6700\u9ad8\u6548\u7387\u800c\u5bf9\u6570\u636e\u5e93\u5c42\u8fdb\u884c\u7684\u8c03\u4f18\u3002<\/BLOCKQUOTE><!--START RESERVED FOR FUTURE USE INCLUDE FILES--><!-- include java script once we verify teams wants to use this and it will work on dbcs and cyrillic characters --><!--END RESERVED FOR FUTURE USE INCLUDE FILES--><br \/>\n<P><A name=N10073><SPAN class=atitle>\u5173\u4e8e MySQL \u8c03\u4f18<\/SPAN><\/A><\/P><br \/>\n<P>\u6709 3 \u79cd\u65b9\u6cd5\u53ef\u4ee5\u52a0\u5feb MySQL \u670d\u52a1\u5668\u7684\u8fd0\u884c\u901f\u5ea6\uff0c\u6548\u7387\u4ece\u4f4e\u5230\u9ad8\u4f9d\u6b21\u4e3a\uff1a<\/P><br \/>\n<OL><br \/>\n<LI>\u66ff\u6362\u6709\u95ee\u9898\u7684\u786c\u4ef6\u3002<br \/>\n<LI>\u5bf9 MySQL \u8fdb\u7a0b\u7684\u8bbe\u7f6e\u8fdb\u884c\u8c03\u4f18\u3002<br \/>\n<LI>\u5bf9\u67e5\u8be2\u8fdb\u884c\u4f18\u5316\u3002 <\/LI><\/OL><br \/>\n<P>\u66ff\u6362\u6709\u95ee\u9898\u7684\u786c\u4ef6\u901a\u5e38\u662f\u6211\u4eec\u7684\u7b2c\u4e00\u8003\u8651\uff0c\u4e3b\u8981\u539f\u56e0\u662f\u6570\u636e\u5e93\u4f1a\u5360\u7528\u5927\u91cf\u8d44\u6e90\u3002\u4e0d\u8fc7\u8fd9\u79cd\u89e3\u51b3\u65b9\u6848\u4e5f\u5c31\u4ec5\u9650\u4e8e\u6b64\u4e86\u3002\u5b9e\u9645\u4e0a\uff0c\u60a8\u901a\u5e38\u53ef\u4ee5\u8ba9\u4e2d\u592e\u5904\u7406\u5668\uff08CPU\uff09\u6216\u78c1\u76d8\u901f\u5ea6\u52a0\u500d\uff0c\u4e5f\u53ef\u4ee5\u8ba9\u5185\u5b58\u589e\u5927 4 \u5230 8 \u500d\u3002<\/P><br \/>\n<P>\u7b2c\u4e8c\u79cd\u65b9\u6cd5\u662f\u5bf9 MySQL \u670d\u52a1\u5668\uff08\u4e5f\u79f0\u4e3a <CODE>mysqld<\/CODE>\uff09\u8fdb\u884c\u8c03\u4f18\u3002\u5bf9\u8fd9\u4e2a\u8fdb\u7a0b\u8fdb\u884c\u8c03\u4f18\u610f\u5473\u7740\u9002\u5f53\u5730\u5206\u914d\u5185\u5b58\uff0c\u5e76\u8ba9 <CODE>mysqld<\/CODE> \u4e86\u89e3\u5c06\u4f1a\u627f\u53d7\u4f55\u79cd\u7c7b\u578b\u7684\u8d1f\u8f7d\u3002\u52a0\u5feb\u78c1\u76d8\u8fd0\u884c\u901f\u5ea6\u4e0d\u5982\u51cf\u5c11\u6240\u9700\u7684\u78c1\u76d8\u8bbf\u95ee\u6b21\u6570\u3002\u7c7b\u4f3c\u5730\uff0c\u786e\u4fdd MySQL \u8fdb\u7a0b\u6b63\u786e\u64cd\u4f5c\u5c31\u610f\u5473\u7740\u5b83\u82b1\u8d39\u5728\u670d\u52a1\u67e5\u8be2\u4e0a\u7684\u65f6\u95f4\u8981\u591a\u4e8e\u82b1\u8d39\u5728\u5904\u7406\u540e\u53f0\u4efb\u52a1\uff08\u5982\u5904\u7406\u4e34\u65f6\u78c1\u76d8\u8868\u6216\u6253\u5f00\u548c\u5173\u95ed\u6587\u4ef6\uff09\u4e0a\u7684\u65f6\u95f4\u3002\u5bf9 <CODE>mysqld<\/CODE> \u8fdb\u884c\u8c03\u4f18\u662f\u672c\u6587\u7684\u91cd\u70b9\u3002<\/P><br \/>\n<P>\u6700\u597d\u7684\u65b9\u6cd5\u662f\u786e\u4fdd\u67e5\u8be2\u5df2\u7ecf\u8fdb\u884c\u4e86\u4f18\u5316\u3002\u8fd9\u610f\u5473\u7740\u5bf9\u8868\u5e94\u7528\u4e86\u9002\u5f53\u7684\u7d22\u5f15\uff0c\u67e5\u8be2\u662f\u6309\u7167\u53ef\u4ee5\u5145\u5206\u5229\u7528 MySQL \u529f\u80fd\u7684\u65b9\u5f0f\u6765\u7f16\u5199\u7684\u3002\u5c3d\u7ba1\u672c\u6587\u5e76\u6ca1\u6709\u5305\u542b\u67e5\u8be2\u8c03\u4f18\u65b9\u9762\u7684\u5185\u5bb9\uff08\u5f88\u591a\u8457\u4f5c\u4e2d\u5df2\u7ecf\u9488\u5bf9\u8fd9\u4e2a\u4e3b\u9898\u8fdb\u884c\u4e86\u63a2\u8ba8\uff09\uff0c\u4e0d\u8fc7\u5b83\u4f1a\u914d\u7f6e <CODE>mysqld<\/CODE> \u6765\u62a5\u544a\u53ef\u80fd\u9700\u8981\u8fdb\u884c\u8c03\u4f18\u7684\u67e5\u8be2\u3002<\/P><br \/>\n<P>\u867d\u7136\u5df2\u7ecf\u4e3a\u8fd9\u4e9b\u4efb\u52a1\u6307\u6d3e\u4e86\u6b21\u5e8f\uff0c\u4f46\u662f\u4ecd\u7136\u8981\u6ce8\u610f\u786c\u4ef6\u548c <CODE>mysqld<\/CODE> \u7684\u8bbe\u7f6e\u4ee5\u5229\u4e8e\u9002\u5f53\u5730\u8c03\u4f18\u67e5\u8be2\u3002\u673a\u5668\u901f\u5ea6\u6162\u4e5f\u5c31\u7f62\u4e86\uff0c\u6211\u66fe\u7ecf\u89c1\u8fc7\u901f\u5ea6\u5f88\u5feb\u7684\u673a\u5668\u5728\u8fd0\u884c\u8bbe\u8ba1\u826f\u597d\u7684\u67e5\u8be2\u65f6\u7531\u4e8e\u8d1f\u8f7d\u8fc7\u91cd\u800c\u5931\u8d25\uff0c\u56e0\u4e3a <CODE>mysqld<\/CODE> \u88ab\u5927\u91cf\u7e41\u5fd9\u7684\u5de5\u4f5c\u6240\u5360\u7528\u800c\u4e0d\u80fd\u670d\u52a1\u67e5\u8be2\u3002<\/P><BR><br \/>\n<TABLE cellSpacing=0 cellPadding=0 width=\"100%\" border=0><br \/>\n<TBODY><br \/>\n<TR><br \/>\n<TD><IMG height=1 alt=\"\" src=\"http:\/\/www.ibm.com\/i\/v14\/rules\/blue_rule.gif\" width=\"100%\"><BR><IMG height=6 alt=\"\" src=\"http:\/\/www.ibm.com\/i\/c.gif\" width=8 border=0><\/TD><\/TR><\/TBODY><\/TABLE><br \/>\n<TABLE class=no-print cellSpacing=0 cellPadding=0 align=right><br \/>\n<TBODY><br \/>\n<TR align=right><br \/>\n<TD><IMG height=4 alt=\"\" src=\"http:\/\/www.ibm.com\/i\/c.gif\" width=\"100%\"><BR><br \/>\n<TABLE cellSpacing=0 cellPadding=0 border=0><br \/>\n<TBODY><br \/>\n<TR><br \/>\n<TD vAlign=center><BR><\/TD><br \/>\n<TD vAlign=top align=right><A class=fbox href=\"http:\/\/www.ibm.com\/developerworks\/cn\/linux\/l-tune-lamp-3.html#main\"><B><FONT color=#996699><\/FONT><\/B><\/A><\/TD><\/TR><\/TBODY><\/TABLE><\/TD><\/TR><\/TBODY><\/TABLE><BR><BR><br \/>\n<P><A name=N100C3><SPAN class=atitle>\u8bb0\u5f55\u6162\u901f\u67e5\u8be2<\/SPAN><\/A><\/P><br \/>\n<P>\u5728\u4e00\u4e2a SQL \u670d\u52a1\u5668\u4e2d\uff0c\u6570\u636e\u8868\u90fd\u662f\u4fdd\u5b58\u5728\u78c1\u76d8\u4e0a\u7684\u3002\u7d22\u5f15\u4e3a\u670d\u52a1\u5668\u63d0\u4f9b\u4e86\u4e00\u79cd\u5728\u8868\u4e2d\u67e5\u627e\u7279\u5b9a\u6570\u636e\u884c\u7684\u65b9\u6cd5\uff0c\u800c\u4e0d\u7528\u641c\u7d22\u6574\u4e2a\u8868\u3002\u5f53\u5fc5\u987b\u8981\u641c\u7d22\u6574\u4e2a\u8868\u65f6\uff0c\u5c31\u79f0\u4e3a<I>\u8868\u626b\u63cf<\/I>\u3002\u901a\u5e38\u6765\u8bf4\uff0c\u60a8\u53ef\u80fd\u53ea\u5e0c\u671b\u83b7\u5f97\u8868\u4e2d\u6570\u636e\u7684\u4e00\u4e2a\u5b50\u96c6\uff0c\u56e0\u6b64\u5168\u8868\u626b\u63cf\u4f1a\u6d6a\u8d39\u5927\u91cf\u7684\u78c1\u76d8 I\/O\uff0c\u56e0\u6b64\u4e5f\u5c31\u4f1a\u6d6a\u8d39\u5927\u91cf\u65f6\u95f4\u3002\u5f53\u5fc5\u987b\u5bf9\u6570\u636e\u8fdb\u884c\u8fde\u63a5\u65f6\uff0c\u8fd9\u4e2a\u95ee\u9898\u5c31\u66f4\u52a0\u590d\u6742\u4e86\uff0c\u56e0\u4e3a\u5fc5\u987b\u8981\u5bf9\u8fde\u63a5\u4e24\u7aef\u7684\u591a\u884c\u6570\u636e\u8fdb\u884c\u6bd4\u8f83\u3002<\/P><br \/>\n<P>\u5f53\u7136\uff0c\u8868\u626b\u63cf\u5e76\u4e0d\u603b\u662f\u4f1a\u5e26\u6765\u95ee\u9898\uff1b\u6709\u65f6\u8bfb\u53d6\u6574\u4e2a\u8868\u53cd\u800c\u4f1a\u6bd4\u4ece\u4e2d\u6311\u9009\u51fa\u4e00\u90e8\u5206\u6570\u636e\u66f4\u52a0\u6709\u6548\uff08\u670d\u52a1\u5668\u8fdb\u7a0b\u4e2d\u67e5\u8be2\u89c4\u5212\u5668\u7528\u6765\u4f5c\u51fa\u8fd9\u4e9b\u51b3\u5b9a\uff09\u3002\u5982\u679c\u7d22\u5f15\u7684\u4f7f\u7528\u6548\u7387\u5f88\u4f4e\uff0c\u6216\u8005\u6839\u672c\u5c31\u4e0d\u80fd\u4f7f\u7528\u7d22\u5f15\uff0c\u5219\u4f1a\u51cf\u6162\u67e5\u8be2\u901f\u5ea6\uff0c\u800c\u4e14\u968f\u7740\u670d\u52a1\u5668\u4e0a\u7684\u8d1f\u8f7d\u548c\u8868\u5927\u5c0f\u7684\u589e\u52a0\uff0c\u8fd9\u4e2a\u95ee\u9898\u4f1a\u53d8\u5f97\u66f4\u52a0\u663e\u8457\u3002\u6267\u884c\u65f6\u95f4\u8d85\u8fc7\u7ed9\u5b9a\u65f6\u95f4\u8303\u56f4\u7684\u67e5\u8be2\u5c31\u79f0\u4e3a<I>\u6162\u901f\u67e5\u8be2<\/I>\u3002<\/P><br \/>\n<P>\u60a8\u53ef\u4ee5\u914d\u7f6e <CODE>mysqld<\/CODE> \u5c06\u8fd9\u4e9b\u6162\u901f\u67e5\u8be2\u8bb0\u5f55\u5230\u9002\u5f53\u547d\u540d\u7684\u6162\u901f\u67e5\u8be2\u65e5\u5fd7\u4e2d\u3002\u7ba1\u7406\u5458\u7136\u540e\u4f1a\u67e5\u770b\u8fd9\u4e2a\u65e5\u5fd7\u6765\u5e2e\u52a9\u4ed6\u4eec\u786e\u5b9a\u5e94\u7528\u7a0b\u5e8f\u4e2d\u6709\u54ea\u4e9b\u90e8\u5206\u9700\u8981\u8fdb\u4e00\u6b65\u8c03\u67e5\u3002\u6e05\u5355 1 \u7ed9\u51fa\u4e86\u8981\u542f\u7528\u6162\u901f\u67e5\u8be2\u65e5\u5fd7\u9700\u8981\u5728 my.cnf \u4e2d\u6240\u505a\u7684\u914d\u7f6e\u3002<\/P><BR><A name=listing1><B>\u6e05\u5355 1. \u542f\u7528 MySQL \u6162\u901f\u67e5\u8be2\u65e5\u5fd7<\/B><\/A><BR><br \/>\n<TABLE cellSpacing=0 cellPadding=0 width=\"80%\" border=0><br \/>\n<TBODY><br \/>\n<TR><br \/>\n<TD class=code-outline><PRE class=displaycode><br \/>\n[mysqld]<br \/>\n; enable the slow query log, default 10 seconds<br \/>\nlog-slow-queries<br \/>\n; log queries taking longer than 5 seconds<br \/>\nlong_query_time = 5<br \/>\n; log queries that don&#8217;t use indexes even if they take less than long_query_time<br \/>\n; MySQL 4.1 and newer only<br \/>\nlog-queries-not-using-indexes<br \/>\n<\/PRE><\/TD><\/TR><\/TBODY><\/TABLE><BR><br \/>\n<P>\u8fd9\u4e09\u4e2a\u8bbe\u7f6e\u4e00\u8d77\u4f7f\u7528\uff0c\u53ef\u4ee5\u8bb0\u5f55\u6267\u884c\u65f6\u95f4\u8d85\u8fc7 5 \u79d2\u548c\u6ca1\u6709\u4f7f\u7528\u7d22\u5f15\u7684\u67e5\u8be2\u3002\u8bf7\u6ce8\u610f\u6709\u5173 <CODE>log-queries-not-using-indexes<\/CODE> \u7684\u8b66\u544a\uff1a\u60a8\u5fc5\u987b\u4f7f\u7528 MySQL 4.1 \u6216\u66f4\u9ad8\u7248\u672c\u3002\u6162\u901f\u67e5\u8be2\u65e5\u5fd7\u90fd\u4fdd\u5b58\u5728 MySQL \u6570\u636e\u76ee\u5f55\u4e2d\uff0c\u540d\u4e3a <I>hostname<\/I>-slow.log\u3002\u5982\u679c\u5e0c\u671b\u4f7f\u7528\u4e00\u4e2a\u4e0d\u540c\u7684\u540d\u5b57\u6216\u8def\u5f84\uff0c\u53ef\u4ee5\u5728 my.cnf \u4e2d\u4f7f\u7528 <CODE>log-slow-queries = \/new\/path\/to\/file<\/CODE> \u5b9e\u73b0\u6b64\u76ee\u7684\u3002<\/P><br \/>\n<P>\u9605\u8bfb\u6162\u901f\u67e5\u8be2\u65e5\u5fd7\u6700\u597d\u662f\u901a\u8fc7 <CODE>mysqldumpslow<\/CODE> \u547d\u4ee4\u8fdb\u884c\u3002\u6307\u5b9a\u65e5\u5fd7\u6587\u4ef6\u7684\u8def\u5f84\uff0c\u5c31\u53ef\u4ee5\u770b\u5230\u4e00\u4e2a\u6162\u901f\u67e5\u8be2\u7684\u6392\u5e8f\u540e\u7684\u5217\u8868\uff0c\u5e76\u4e14\u8fd8\u663e\u793a\u4e86\u5b83\u4eec\u5728\u65e5\u5fd7\u6587\u4ef6\u4e2d\u51fa\u73b0\u7684\u6b21\u6570\u3002\u4e00\u4e2a\u975e\u5e38\u6709\u7528\u7684\u7279\u6027\u662f <CODE>mysqldumpslow<\/CODE> \u5728\u6bd4\u8f83\u7ed3\u679c\u4e4b\u524d\uff0c\u4f1a\u5220\u9664\u4efb\u4f55\u7528\u6237\u6307\u5b9a\u7684\u6570\u636e\uff0c\u56e0\u6b64\u5bf9\u540c\u4e00\u4e2a\u67e5\u8be2\u7684\u4e0d\u540c\u8c03\u7528\u88ab\u8ba1\u4e3a\u4e00\u6b21\uff1b\u8fd9\u53ef\u4ee5\u5e2e\u52a9\u627e\u51fa\u9700\u8981\u5de5\u4f5c\u91cf\u6700\u591a\u7684\u67e5\u8be2\u3002<\/P><BR><br \/>\n<TABLE cellSpacing=0 cellPadding=0 width=\"100%\" border=0><br \/>\n<TBODY><br \/>\n<TR><br \/>\n<TD><IMG height=1 alt=\"\" src=\"http:\/\/www.ibm.com\/i\/v14\/rules\/blue_rule.gif\" width=\"100%\"><BR><IMG height=6 alt=\"\" src=\"http:\/\/www.ibm.com\/i\/c.gif\" width=8 border=0><\/TD><\/TR><\/TBODY><\/TABLE><br \/>\n<TABLE class=no-print cellSpacing=0 cellPadding=0 align=right><br \/>\n<TBODY><br \/>\n<TR align=right><br \/>\n<TD><IMG height=4 alt=\"\" src=\"http:\/\/www.ibm.com\/i\/c.gif\" width=\"100%\"><BR><br \/>\n<TABLE cellSpacing=0 cellPadding=0 border=0><br \/>\n<TBODY><br \/>\n<TR><br \/>\n<TD vAlign=center><BR><\/TD><br \/>\n<TD vAlign=top align=right><A class=fbox href=\"http:\/\/www.ibm.com\/developerworks\/cn\/linux\/l-tune-lamp-3.html#main\"><B><FONT color=#996699><\/FONT><\/B><\/A><\/TD><\/TR><\/TBODY><\/TABLE><\/TD><\/TR><\/TBODY><\/TABLE><BR><BR><br \/>\n<P><A name=N100FF><SPAN class=atitle>\u5bf9\u67e5\u8be2\u8fdb\u884c\u7f13\u5b58<\/SPAN><\/A><\/P><br \/>\n<P>\u5f88\u591a LAMP \u5e94\u7528\u7a0b\u5e8f\u90fd\u4e25\u91cd\u4f9d\u8d56\u4e8e\u6570\u636e\u5e93\uff0c\u4f46\u5374\u4f1a\u53cd\u590d\u6267\u884c\u76f8\u540c\u7684\u67e5\u8be2\u3002\u6bcf\u6b21\u6267\u884c\u67e5\u8be2\u65f6\uff0c\u6570\u636e\u5e93\u90fd\u5fc5\u987b\u8981\u6267\u884c\u76f8\u540c\u7684\u5de5\u4f5c \u2014\u2014 \u5bf9\u67e5\u8be2\u8fdb\u884c\u5206\u6790\uff0c\u786e\u5b9a\u5982\u4f55\u6267\u884c\u67e5\u8be2\uff0c\u4ece\u78c1\u76d8\u4e2d\u52a0\u8f7d\u4fe1\u606f\uff0c\u7136\u540e\u5c06\u7ed3\u679c\u8fd4\u56de\u7ed9\u5ba2\u6237\u673a\u3002MySQL \u6709\u4e00\u4e2a\u7279\u6027\u79f0\u4e3a<I>\u67e5\u8be2\u7f13\u5b58<\/I>\uff0c\u5b83\u5c06\uff08\u540e\u9762\u4f1a\u7528\u5230\u7684\uff09\u67e5\u8be2\u7ed3\u679c\u4fdd\u5b58\u5728\u5185\u5b58\u4e2d\u3002\u5728\u5f88\u591a\u60c5\u51b5\u4e0b\uff0c\u8fd9\u4f1a\u6781\u5927\u5730\u63d0\u9ad8\u6027\u80fd\u3002\u4e0d\u8fc7\uff0c\u95ee\u9898\u662f\u67e5\u8be2\u7f13\u5b58\u5728\u9ed8\u8ba4\u60c5\u51b5\u4e0b\u662f\u7981\u7528\u7684\u3002<\/P><br \/>\n<P>\u5c06 <CODE>query_cache_size = 32M<\/CODE> \u6dfb\u52a0\u5230 \/etc\/my.conf \u4e2d\u53ef\u4ee5\u542f\u7528 32MB \u7684\u67e5\u8be2\u7f13\u5b58\u3002<\/P><br \/>\n<P><A name=N10112><SPAN class=smalltitle><STRONG><FONT size=3>\u76d1\u89c6\u67e5\u8be2\u7f13\u5b58<\/FONT><\/STRONG><\/SPAN><\/A><\/P><br \/>\n<P>\u5728\u542f\u7528\u67e5\u8be2\u7f13\u5b58\u4e4b\u540e\uff0c\u91cd\u8981\u7684\u662f\u8981\u7406\u89e3\u5b83\u662f\u5426\u5f97\u5230\u4e86\u6709\u6548\u7684\u4f7f\u7528\u3002MySQL \u6709\u51e0\u4e2a\u53ef\u4ee5\u67e5\u770b\u7684\u53d8\u91cf\uff0c\u53ef\u4ee5\u7528\u6765\u4e86\u89e3\u7f13\u5b58\u4e2d\u7684\u60c5\u51b5\u3002\u6e05\u5355 2 \u7ed9\u51fa\u4e86\u7f13\u5b58\u7684\u72b6\u6001\u3002<\/P><BR><A name=listing2><B>\u6e05\u5355 2. \u663e\u793a\u67e5\u8be2\u7f13\u5b58\u7684\u7edf\u8ba1\u4fe1\u606f<\/B><\/A><BR><br \/>\n<TABLE cellSpacing=0 cellPadding=0 width=\"80%\" border=0><br \/>\n<TBODY><br \/>\n<TR><br \/>\n<TD class=code-outline><PRE class=displaycode><br \/>\nmysql&gt; SHOW STATUS LIKE &#8216;qcache%&#8217;;<br \/>\n+&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;-+&#8212;&#8212;&#8212;&#8212;+<br \/>\n| Variable_name           | Value      |<br \/>\n+&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;-+&#8212;&#8212;&#8212;&#8212;+<br \/>\n| Qcache_free_blocks      | 5216       |<br \/>\n| Qcache_free_memory      | 14640664   |<br \/>\n| Qcache_hits             | 2581646882 |<br \/>\n| Qcache_inserts          | 360210964  |<br \/>\n| Qcache_lowmem_prunes    | 281680433  |<br \/>\n| Qcache_not_cached       | 79740667   |<br \/>\n| Qcache_queries_in_cache | 16927      |<br \/>\n| Qcache_total_blocks     | 47042      |<br \/>\n+&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;-+&#8212;&#8212;&#8212;&#8212;+<br \/>\n8 rows in set (0.00 sec)<\/PRE><\/TD><\/TR><\/TBODY><\/TABLE><BR><br \/>\n<P>\u8fd9\u4e9b\u9879\u7684\u89e3\u91ca\u5982\u8868 1 \u6240\u793a\u3002<\/P><BR><A name=table1><B>\u8868 1. MySQL \u67e5\u8be2\u7f13\u5b58\u53d8\u91cf<\/B><\/A><BR><br \/>\n<TABLE class=data-table-1 cellSpacing=0 cellPadding=0 width=\"80%\" summary=Timers border=0><br \/>\n<TBODY><br \/>\n<TR><br \/>\n<TH>\u53d8\u91cf\u540d<\/TH><br \/>\n<TH>\u8bf4\u660e<\/TH><\/TR><br \/>\n<TR><br \/>\n<TD><CODE>Qcache_free_blocks<\/CODE> <\/TD><br \/>\n<TD>\u7f13\u5b58\u4e2d\u76f8\u90bb\u5185\u5b58\u5757\u7684\u4e2a\u6570\u3002\u6570\u76ee\u5927\u8bf4\u660e\u53ef\u80fd\u6709\u788e\u7247\u3002<CODE>FLUSH QUERY CACHE<\/CODE> \u4f1a\u5bf9\u7f13\u5b58\u4e2d\u7684\u788e\u7247\u8fdb\u884c\u6574\u7406\uff0c\u4ece\u800c\u5f97\u5230\u4e00\u4e2a\u7a7a\u95f2\u5757\u3002<\/TD><\/TR><br \/>\n<TR><br \/>\n<TD><CODE>Qcache_free_memory<\/CODE> <\/TD><br \/>\n<TD>\u7f13\u5b58\u4e2d\u7684\u7a7a\u95f2\u5185\u5b58\u3002<\/TD><\/TR><br \/>\n<TR><br \/>\n<TD><CODE>Qcache_hits<\/CODE> <\/TD><br \/>\n<TD>\u6bcf\u6b21\u67e5\u8be2\u5728\u7f13\u5b58\u4e2d\u547d\u4e2d\u65f6\u5c31\u589e\u5927\u3002<\/TD><\/TR><br \/>\n<TR><br \/>\n<TD><CODE>Qcache_inserts<\/CODE> <\/TD><br \/>\n<TD>\u6bcf\u6b21\u63d2\u5165\u4e00\u4e2a\u67e5\u8be2\u65f6\u5c31\u589e\u5927\u3002\u547d\u4e2d\u6b21\u6570\u9664\u4ee5\u63d2\u5165\u6b21\u6570\u5c31\u662f\u4e0d\u4e2d\u6bd4\u7387\uff1b\u7528 1 \u51cf\u53bb\u8fd9\u4e2a\u503c\u5c31\u662f\u547d\u4e2d\u7387\u3002\u5728\u4e0a\u9762\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u5927\u7ea6\u6709 87% \u7684\u67e5\u8be2\u90fd\u5728\u7f13\u5b58\u4e2d\u547d\u4e2d\u3002<\/TD><\/TR><br \/>\n<TR><br \/>\n<TD><CODE>Qcache_lowmem_prunes<\/CODE> <\/TD><br \/>\n<TD>\u7f13\u5b58\u51fa\u73b0\u5185\u5b58\u4e0d\u8db3\u5e76\u4e14\u5fc5\u987b\u8981\u8fdb\u884c\u6e05\u7406\u4ee5\u4fbf\u4e3a\u66f4\u591a\u67e5\u8be2\u63d0\u4f9b\u7a7a\u95f4\u7684\u6b21\u6570\u3002\u8fd9\u4e2a\u6570\u5b57\u6700\u597d\u957f\u65f6\u95f4\u6765\u770b\uff1b\u5982\u679c\u8fd9\u4e2a\u6570\u5b57\u5728\u4e0d\u65ad\u589e\u957f\uff0c\u5c31\u8868\u793a\u53ef\u80fd\u788e\u7247\u975e\u5e38\u4e25\u91cd\uff0c\u6216\u8005\u5185\u5b58\u5f88\u5c11\u3002\uff08\u4e0a\u9762\u7684 <CODE>free_blocks<\/CODE> \u548c <CODE>free_memory<\/CODE> \u53ef\u4ee5\u544a\u8bc9\u60a8\u5c5e\u4e8e\u54ea\u79cd\u60c5\u51b5\uff09\u3002<\/TD><\/TR><br \/>\n<TR><br \/>\n<TD><CODE>Qcache_not_cached<\/CODE> <\/TD><br \/>\n<TD>\u4e0d\u9002\u5408\u8fdb\u884c\u7f13\u5b58\u7684\u67e5\u8be2\u7684\u6570\u91cf\uff0c\u901a\u5e38\u662f\u7531\u4e8e\u8fd9\u4e9b\u67e5\u8be2\u4e0d\u662f <CODE>SELECT<\/CODE> \u8bed\u53e5\u3002<\/TD><\/TR><br \/>\n<TR><br \/>\n<TD><CODE>Qcache_queries_in_cache<\/CODE> <\/TD><br \/>\n<TD>\u5f53\u524d\u7f13\u5b58\u7684\u67e5\u8be2\uff08\u548c\u54cd\u5e94\uff09\u7684\u6570\u91cf\u3002<\/TD><\/TR><br \/>\n<TR><br \/>\n<TD><CODE>Qcache_total_blocks<\/CODE> <\/TD><br \/>\n<TD>\u7f13\u5b58\u4e2d\u5757\u7684\u6570\u91cf\u3002<\/TD><\/TR><\/TBODY><\/TABLE><br \/>\n<P>\u901a\u5e38\uff0c\u95f4\u9694\u51e0\u79d2\u663e\u793a\u8fd9\u4e9b\u53d8\u91cf\u5c31\u53ef\u4ee5\u770b\u51fa\u533a\u522b\uff0c\u8fd9\u53ef\u4ee5\u5e2e\u52a9\u786e\u5b9a\u7f13\u5b58\u662f\u5426\u6b63\u5728\u6709\u6548\u5730\u4f7f\u7528\u3002\u8fd0\u884c <CODE>FLUSH STATUS<\/CODE> \u53ef\u4ee5\u91cd\u7f6e\u4e00\u4e9b\u8ba1\u6570\u5668\uff0c\u5982\u679c\u670d\u52a1\u5668\u5df2\u7ecf\u8fd0\u884c\u4e86\u4e00\u6bb5\u65f6\u95f4\uff0c\u8fd9\u4f1a\u975e\u5e38\u6709\u5e2e\u52a9\u3002<\/P><br \/>\n<P>\u4f7f\u7528\u975e\u5e38\u5927\u7684\u67e5\u8be2\u7f13\u5b58\uff0c\u671f\u671b\u53ef\u4ee5\u7f13\u5b58\u6240\u6709\u4e1c\u897f\uff0c\u8fd9\u79cd\u60f3\u6cd5\u975e\u5e38\u8bf1\u4eba\u3002\u7531\u4e8e <CODE>mysqld<\/CODE> \u5fc5\u987b\u8981\u5bf9\u7f13\u5b58\u8fdb\u884c\u7ef4\u62a4\uff0c\u4f8b\u5982\u5f53\u5185\u5b58\u53d8\u5f97\u5f88\u4f4e\u65f6\u6267\u884c\u526a\u9664\uff0c\u56e0\u6b64\u670d\u52a1\u5668\u53ef\u80fd\u4f1a\u5728\u8bd5\u56fe\u7ba1\u7406\u7f13\u5b58\u65f6\u800c\u9677\u5165\u56f0\u5883\u3002\u4f5c\u4e3a\u4e00\u6761\u89c4\u5219\uff0c\u5982\u679c <CODE>FLUSH QUERY CACHE<\/CODE> \u5360\u7528\u4e86\u5f88\u957f\u65f6\u95f4\uff0c\u90a3\u5c31\u8bf4\u660e\u7f13\u5b58\u592a\u5927\u4e86\u3002<\/P><BR><br \/>\n<TABLE cellSpacing=0 cellPadding=0 width=\"100%\" border=0><br \/>\n<TBODY><br \/>\n<TR><br \/>\n<TD><IMG height=1 alt=\"\" src=\"http:\/\/www.ibm.com\/i\/v14\/rules\/blue_rule.gif\" width=\"100%\"><BR><IMG height=6 alt=\"\" src=\"http:\/\/www.ibm.com\/i\/c.gif\" width=8 border=0><\/TD><\/TR><\/TBODY><\/TABLE><br \/>\n<TABLE class=no-print cellSpacing=0 cellPadding=0 align=right><br \/>\n<TBODY><br \/>\n<TR align=right><br \/>\n<TD><IMG height=4 alt=\"\" src=\"http:\/\/www.ibm.com\/i\/c.gif\" width=\"100%\"><BR><br \/>\n<TABLE cellSpacing=0 cellPadding=0 border=0><br \/>\n<TBODY><br \/>\n<TR><br \/>\n<TD vAlign=center><BR><\/TD><br \/>\n<TD vAlign=top align=right><A class=fbox href=\"http:\/\/www.ibm.com\/developerworks\/cn\/linux\/l-tune-lamp-3.html#main\"><B><FONT color=#996699><\/FONT><\/B><\/A><\/TD><\/TR><\/TBODY><\/TABLE><\/TD><\/TR><\/TBODY><\/TABLE><BR><BR><br \/>\n<P><A name=N101CB><SPAN class=atitle>\u5f3a\u5236\u9650\u5236<\/SPAN><\/A><\/P><br \/>\n<P>\u60a8\u53ef\u4ee5\u5728 <CODE>mysqld<\/CODE> \u4e2d\u5f3a\u5236\u4e00\u4e9b\u9650\u5236\u6765\u786e\u4fdd\u7cfb\u7edf\u8d1f\u8f7d\u4e0d\u4f1a\u5bfc\u81f4\u8d44\u6e90\u8017\u5c3d\u7684\u60c5\u51b5\u51fa\u73b0\u3002\u6e05\u5355 3 \u7ed9\u51fa\u4e86 my.cnf \u4e2d\u4e0e\u8d44\u6e90\u6709\u5173\u7684\u4e00\u4e9b\u91cd\u8981\u8bbe\u7f6e\u3002<\/P><BR><A name=listing3><B>\u6e05\u5355 3. MySQL \u8d44\u6e90\u8bbe\u7f6e<\/B><\/A><BR><br \/>\n<TABLE cellSpacing=0 cellPadding=0 width=\"80%\" border=0><br \/>\n<TBODY><br \/>\n<TR><br \/>\n<TD class=code-outline><PRE class=displaycode><br \/>\nset-variable=max_connections=500<br \/>\nset-variable=wait_timeout=10<br \/>\nmax_connect_errors = 100<\/PRE><\/TD><\/TR><\/TBODY><\/TABLE><BR><br \/>\n<P>\u8fde\u63a5\u6700\u5927\u4e2a\u6570\u662f\u5728\u7b2c\u4e00\u884c\u4e2d\u8fdb\u884c\u7ba1\u7406\u7684\u3002\u4e0e Apache \u4e2d\u7684 <CODE>MaxClients<\/CODE> \u7c7b\u4f3c\uff0c\u5176\u60f3\u6cd5\u662f\u786e\u4fdd\u53ea\u5efa\u7acb\u670d\u52a1\u5141\u8bb8\u6570\u76ee\u7684\u8fde\u63a5\u3002\u8981\u786e\u5b9a\u670d\u52a1\u5668\u4e0a\u76ee\u524d\u5efa\u7acb\u8fc7\u7684\u6700\u5927\u8fde\u63a5\u6570\uff0c\u8bf7\u6267\u884c <CODE>SHOW STATUS LIKE &#8216;max_used_connections&#8217;<\/CODE>\u3002<\/P><br \/>\n<P>\u7b2c 2 \u884c\u544a\u8bc9 <CODE>mysqld<\/CODE> \u7ec8\u6b62\u6240\u6709\u7a7a\u95f2\u65f6\u95f4\u8d85\u8fc7 10 \u79d2\u7684\u8fde\u63a5\u3002\u5728 LAMP \u5e94\u7528\u7a0b\u5e8f\u4e2d\uff0c\u8fde\u63a5\u6570\u636e\u5e93\u7684\u65f6\u95f4\u901a\u5e38\u5c31\u662f Web \u670d\u52a1\u5668\u5904\u7406\u8bf7\u6c42\u6240\u82b1\u8d39\u7684\u65f6\u95f4\u3002\u6709\u65f6\u5019\uff0c\u5982\u679c\u8d1f\u8f7d\u8fc7\u91cd\uff0c\u8fde\u63a5\u4f1a\u6302\u8d77\uff0c\u5e76\u4e14\u4f1a\u5360\u7528\u8fde\u63a5\u8868\u7a7a\u95f4\u3002\u5982\u679c\u6709\u591a\u4e2a\u4ea4\u4e92\u7528\u6237\u6216\u4f7f\u7528\u4e86\u5230\u6570\u636e\u5e93\u7684\u6301\u4e45\u8fde\u63a5\uff0c\u90a3\u4e48\u5c06\u8fd9\u4e2a\u503c\u8bbe\u4f4e\u4e00\u70b9\u5e76\u4e0d\u53ef\u53d6\uff01<\/P><br \/>\n<P>\u6700\u540e\u4e00\u884c\u662f\u4e00\u4e2a\u5b89\u5168\u7684\u65b9\u6cd5\u3002\u5982\u679c\u4e00\u4e2a\u4e3b\u673a\u5728\u8fde\u63a5\u5230\u670d\u52a1\u5668\u65f6\u6709\u95ee\u9898\uff0c\u5e76\u91cd\u8bd5\u5f88\u591a\u6b21\u540e\u653e\u5f03\uff0c\u90a3\u4e48\u8fd9\u4e2a\u4e3b\u673a\u5c31\u4f1a\u88ab\u9501\u5b9a\uff0c\u76f4\u5230 <CODE>FLUSH HOSTS<\/CODE> \u4e4b\u540e\u624d\u80fd\u8fd0\u884c\u3002\u9ed8\u8ba4\u60c5\u51b5\u4e0b\uff0c10 \u6b21\u5931\u8d25\u5c31\u8db3\u4ee5\u5bfc\u81f4\u9501\u5b9a\u4e86\u3002\u5c06\u8fd9\u4e2a\u503c\u4fee\u6539\u4e3a 100 \u4f1a\u7ed9\u670d\u52a1\u5668\u8db3\u591f\u7684\u65f6\u95f4\u6765\u4ece\u95ee\u9898\u4e2d\u6062\u590d\u3002\u5982\u679c\u91cd\u8bd5 100 \u6b21\u90fd\u65e0\u6cd5\u5efa\u7acb\u8fde\u63a5\uff0c\u90a3\u4e48\u4f7f\u7528\u518d\u9ad8\u7684\u503c\u4e5f\u4e0d\u4f1a\u6709\u592a\u591a\u5e2e\u52a9\uff0c\u53ef\u80fd\u5b83\u6839\u672c\u5c31\u65e0\u6cd5\u8fde\u63a5\u3002<\/P><BR><br \/>\n<TABLE cellSpacing=0 cellPadding=0 width=\"100%\" border=0><br \/>\n<TBODY><br \/>\n<TR><br \/>\n<TD><IMG height=1 alt=\"\" src=\"http:\/\/www.ibm.com\/i\/v14\/rules\/blue_rule.gif\" width=\"100%\"><BR><IMG height=6 alt=\"\" src=\"http:\/\/www.ibm.com\/i\/c.gif\" width=8 border=0><\/TD><\/TR><\/TBODY><\/TABLE><br \/>\n<TABLE class=no-print cellSpacing=0 cellPadding=0 align=right><br \/>\n<TBODY><br \/>\n<TR align=right><br \/>\n<TD><IMG height=4 alt=\"\" src=\"http:\/\/www.ibm.com\/i\/c.gif\" width=\"100%\"><BR><br \/>\n<TABLE cellSpacing=0 cellPadding=0 border=0><br \/>\n<TBODY><br \/>\n<TR><br \/>\n<TD vAlign=center><BR><\/TD><br \/>\n<TD vAlign=top align=right><A class=fbox href=\"http:\/\/www.ibm.com\/developerworks\/cn\/linux\/l-tune-lamp-3.html#main\"><B><FONT color=#996699><\/FONT><\/B><\/A><\/TD><\/TR><\/TBODY><\/TABLE><\/TD><\/TR><\/TBODY><\/TABLE><BR><BR><br \/>\n<P><A name=N101FB><SPAN class=atitle>\u7f13\u51b2\u533a\u548c\u7f13\u5b58<\/SPAN><\/A><\/P><br \/>\n<P>MySQL \u652f\u6301\u8d85\u8fc7 100 \u4e2a\u7684\u53ef\u8c03\u8282\u8bbe\u7f6e\uff1b\u4f46\u662f\u5e78\u8fd0\u7684\u662f\uff0c\u638c\u63e1\u5c11\u6570\u51e0\u4e2a\u5c31\u53ef\u4ee5\u6ee1\u8db3\u5927\u90e8\u5206\u9700\u8981\u3002\u67e5\u627e\u8fd9\u4e9b\u8bbe\u7f6e\u7684\u6b63\u786e\u503c\u53ef\u4ee5\u901a\u8fc7 <CODE>SHOW STATUS<\/CODE> \u547d\u4ee4\u67e5\u770b\u72b6\u6001\u53d8\u91cf\uff0c\u4ece\u4e2d\u53ef\u4ee5\u786e\u5b9a <CODE>mysqld<\/CODE> \u7684\u8fd0\u4f5c\u60c5\u51b5\u662f\u5426\u7b26\u5408\u6211\u4eec\u7684\u9884\u671f\u3002\u7ed9\u7f13\u51b2\u533a\u548c\u7f13\u5b58\u5206\u914d\u7684\u5185\u5b58\u4e0d\u80fd\u8d85\u8fc7\u7cfb\u7edf\u4e2d\u7684\u73b0\u6709\u5185\u5b58\uff0c\u56e0\u6b64\u8c03\u4f18\u901a\u5e38\u90fd\u9700\u8981\u8fdb\u884c\u4e00\u4e9b\u59a5\u534f\u3002<\/P><br \/>\n<P>MySQL \u53ef\u8c03\u8282\u8bbe\u7f6e\u53ef\u4ee5\u5e94\u7528\u4e8e\u6574\u4e2a <CODE>mysqld<\/CODE> \u8fdb\u7a0b\uff0c\u4e5f\u53ef\u4ee5\u5e94\u7528\u4e8e\u5355\u4e2a\u5ba2\u6237\u673a\u4f1a\u8bdd\u3002<\/P><br \/>\n<P><A name=N10213><SPAN class=smalltitle><STRONG><FONT size=3>\u670d\u52a1\u5668\u7aef\u7684\u8bbe\u7f6e<\/FONT><\/STRONG><\/SPAN><\/A><\/P><br \/>\n<P>\u6bcf\u4e2a\u8868\u90fd\u53ef\u4ee5\u8868\u793a\u4e3a\u78c1\u76d8\u4e0a\u7684\u4e00\u4e2a\u6587\u4ef6\uff0c\u5fc5\u987b\u5148\u6253\u5f00\uff0c\u540e\u8bfb\u53d6\u3002\u4e3a\u4e86\u52a0\u5feb\u4ece\u6587\u4ef6\u4e2d\u8bfb\u53d6\u6570\u636e\u7684\u8fc7\u7a0b\uff0c<CODE>mysqld<\/CODE> \u5bf9\u8fd9\u4e9b\u6253\u5f00\u6587\u4ef6\u8fdb\u884c\u4e86\u7f13\u5b58\uff0c\u5176\u6700\u5927\u6570\u76ee\u7531 \/etc\/mysqld.conf \u4e2d\u7684 <CODE>table_cache<\/CODE> \u6307\u5b9a\u3002\u6e05\u5355 4 \u7ed9\u51fa\u4e86\u663e\u793a\u4e0e\u6253\u5f00\u8868\u6709\u5173\u7684\u6d3b\u52a8\u7684\u65b9\u5f0f\u3002<\/P><BR><A name=listing4><B>\u6e05\u5355 4. \u663e\u793a\u6253\u5f00\u8868\u7684\u6d3b\u52a8<\/B><\/A><BR><br \/>\n<TABLE cellSpacing=0 cellPadding=0 width=\"80%\" border=0><br \/>\n<TBODY><br \/>\n<TR><br \/>\n<TD class=code-outline><PRE class=displaycode><br \/>\nmysql&gt; SHOW STATUS LIKE &#8216;open%tables&#8217;;<br \/>\n+&#8212;&#8212;&#8212;&#8212;&#8212;+&#8212;&#8212;-+<br \/>\n| Variable_name | Value |<br \/>\n+&#8212;&#8212;&#8212;&#8212;&#8212;+&#8212;&#8212;-+<br \/>\n| Open_tables   | 5000  |<br \/>\n| Opened_tables | 195   |<br \/>\n+&#8212;&#8212;&#8212;&#8212;&#8212;+&#8212;&#8212;-+<br \/>\n2 rows in set (0.00 sec)<\/PRE><\/TD><\/TR><\/TBODY><\/TABLE><BR><br \/>\n<P>\u6e05\u5355 4 \u8bf4\u660e\u76ee\u524d\u6709 5,000 \u4e2a\u8868\u662f\u6253\u5f00\u7684\uff0c\u6709 195 \u4e2a\u8868\u9700\u8981\u6253\u5f00\uff0c\u56e0\u4e3a\u73b0\u5728\u7f13\u5b58\u4e2d\u5df2\u7ecf\u6ca1\u6709\u53ef\u7528\u6587\u4ef6\u63cf\u8ff0\u7b26\u4e86\uff08\u7531\u4e8e\u7edf\u8ba1\u4fe1\u606f\u5728\u524d\u9762\u5df2\u7ecf\u6e05\u9664\u4e86\uff0c\u56e0\u6b64\u53ef\u80fd\u4f1a\u5b58\u5728 5,000 \u4e2a\u6253\u5f00\u8868\u4e2d\u53ea\u6709 195 \u4e2a\u6253\u5f00\u8bb0\u5f55\u7684\u60c5\u51b5\uff09\u3002\u5982\u679c <CODE>Opened_tables<\/CODE> \u968f\u7740\u91cd\u65b0\u8fd0\u884c <CODE>SHOW STATUS<\/CODE> \u547d\u4ee4\u5feb\u901f\u589e\u52a0\uff0c\u5c31\u8bf4\u660e\u7f13\u5b58\u547d\u4e2d\u7387\u4e0d\u591f\u3002\u5982\u679c <CODE>Open_tables<\/CODE> \u6bd4 <CODE>table_cache<\/CODE> \u8bbe\u7f6e\u5c0f\u5f88\u591a\uff0c\u5c31\u8bf4\u660e\u8be5\u503c\u592a\u5927\u4e86\uff08\u4e0d\u8fc7\u6709\u7a7a\u95f4\u53ef\u4ee5\u589e\u957f\u603b\u4e0d\u662f\u4ec0\u4e48\u574f\u4e8b\uff09\u3002\u4f8b\u5982\uff0c\u4f7f\u7528 <CODE>table_cache = 5000<\/CODE> \u53ef\u4ee5\u8c03\u6574\u8868\u7684\u7f13\u5b58\u3002<\/P><br \/>\n<P>\u4e0e\u8868\u7684\u7f13\u5b58\u7c7b\u4f3c\uff0c\u5bf9\u4e8e\u7ebf\u7a0b\u6765\u8bf4\u4e5f\u6709\u4e00\u4e2a\u7f13\u5b58\u3002 <CODE>mysqld<\/CODE> \u5728\u63a5\u6536\u8fde\u63a5\u65f6\u4f1a\u6839\u636e\u9700\u8981\u751f\u6210\u7ebf\u7a0b\u3002\u5728\u4e00\u4e2a\u8fde\u63a5\u53d8\u5316\u5f88\u5feb\u7684\u7e41\u5fd9\u670d\u52a1\u5668\u4e0a\uff0c\u5bf9\u7ebf\u7a0b\u8fdb\u884c\u7f13\u5b58\u4fbf\u4e8e\u4ee5\u540e\u4f7f\u7528\u53ef\u4ee5\u52a0\u5feb\u6700\u521d\u7684\u8fde\u63a5\u3002<\/P><br \/>\n<P>\u6e05\u5355 5 \u663e\u793a\u5982\u4f55\u786e\u5b9a\u662f\u5426\u7f13\u5b58\u4e86\u8db3\u591f\u7684\u7ebf\u7a0b\u3002<\/P><BR><A name=listing5><B>\u6e05\u5355 5. \u663e\u793a\u7ebf\u7a0b\u4f7f\u7528\u7edf\u8ba1\u4fe1\u606f<\/B><\/A><BR><br \/>\n<TABLE cellSpacing=0 cellPadding=0 width=\"80%\" border=0><br \/>\n<TBODY><br \/>\n<TR><br \/>\n<TD class=code-outline><PRE class=displaycode><br \/>\nmysql&gt; SHOW STATUS LIKE &#8216;threads%&#8217;;<br \/>\n+&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;-+&#8212;&#8212;&#8211;+<br \/>\n| Variable_name     | Value  |<br \/>\n+&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;-+&#8212;&#8212;&#8211;+<br \/>\n| Threads_cached    | 27     |<br \/>\n| Threads_connected | 15     |<br \/>\n| Threads_created   | 838610 |<br \/>\n| Threads_running   | 3      |<br \/>\n+&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;-+&#8212;&#8212;&#8211;+<br \/>\n4 rows in set (0.00 sec)<\/PRE><\/TD><\/TR><\/TBODY><\/TABLE><BR><br \/>\n<P>\u6b64\u5904\u91cd\u8981\u7684\u503c\u662f <CODE>Threads_created<\/CODE>\uff0c\u6bcf\u6b21 <CODE>mysqld<\/CODE> \u9700\u8981\u521b\u5efa\u4e00\u4e2a\u65b0\u7ebf\u7a0b\u65f6\uff0c\u8fd9\u4e2a\u503c\u90fd\u4f1a\u589e\u52a0\u3002\u5982\u679c\u8fd9\u4e2a\u6570\u5b57\u5728\u8fde\u7eed\u6267\u884c <CODE>SHOW STATUS<\/CODE> \u547d\u4ee4\u65f6\u5feb\u901f\u589e\u52a0\uff0c\u5c31\u5e94\u8be5\u5c1d\u8bd5\u589e\u5927\u7ebf\u7a0b\u7f13\u5b58\u3002\u4f8b\u5982\uff0c\u53ef\u4ee5\u5728 my.cnf \u4e2d\u4f7f\u7528 <CODE>thread_cache = 40<\/CODE> \u6765\u5b9e\u73b0\u6b64\u76ee\u7684\u3002<\/P><br \/>\n<P>\u5173\u952e\u5b57\u7f13\u51b2\u533a\u4fdd\u5b58\u4e86 MyISAM \u8868\u7684\u7d22\u5f15\u5757\u3002\u7406\u60f3\u60c5\u51b5\u4e0b\uff0c\u5bf9\u4e8e\u8fd9\u4e9b\u5757\u7684\u8bf7\u6c42\u5e94\u8be5\u6765\u81ea\u4e8e\u5185\u5b58\uff0c\u800c\u4e0d\u662f\u6765\u81ea\u4e8e\u78c1\u76d8\u3002\u6e05\u5355 6 \u663e\u793a\u4e86\u5982\u4f55\u786e\u5b9a\u6709\u591a\u5c11\u5757\u662f\u4ece\u78c1\u76d8\u4e2d\u8bfb\u53d6\u7684\uff0c\u4ee5\u53ca\u6709\u591a\u5c11\u5757\u662f\u4ece\u5185\u5b58\u4e2d\u8bfb\u53d6\u7684\u3002<\/P><BR><A name=listing6><B>\u6e05\u5355 6. \u786e\u5b9a\u5173\u952e\u5b57\u6548\u7387<\/B><\/A><BR><br \/>\n<TABLE cellSpacing=0 cellPadding=0 width=\"80%\" border=0><br \/>\n<TBODY><br \/>\n<TR><br \/>\n<TD class=code-outline><PRE class=displaycode><br \/>\nmysql&gt; show status like &#8216;%key_read%&#8217;;<br \/>\n+&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;-+&#8212;&#8212;&#8212;&#8211;+<br \/>\n| Variable_name     | Value     |<br \/>\n+&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;-+&#8212;&#8212;&#8212;&#8211;+<br \/>\n| Key_read_requests | 163554268 |<br \/>\n| Key_reads         | 98247     |<br \/>\n+&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;-+&#8212;&#8212;&#8212;&#8211;+<br \/>\n2 rows in set (0.00 sec)<\/PRE><\/TD><\/TR><\/TBODY><\/TABLE><BR><br \/>\n<P><CODE>Key_reads<\/CODE> \u4ee3\u8868\u547d\u4e2d\u78c1\u76d8\u7684\u8bf7\u6c42\u4e2a\u6570\uff0c <CODE>Key_read_requests<\/CODE> \u662f\u603b\u6570\u3002\u547d\u4e2d\u78c1\u76d8\u7684\u8bfb\u8bf7\u6c42\u6570\u9664\u4ee5\u8bfb\u8bf7\u6c42\u603b\u6570\u5c31\u662f\u4e0d\u4e2d\u6bd4\u7387 \u2014\u2014 \u5728\u672c\u4f8b\u4e2d\u6bcf 1,000 \u4e2a\u8bf7\u6c42\uff0c\u5927\u7ea6\u6709 0.6 \u4e2a\u6ca1\u6709\u547d\u4e2d\u5185\u5b58\u3002\u5982\u679c\u6bcf 1,000 \u4e2a\u8bf7\u6c42\u4e2d\u547d\u4e2d\u78c1\u76d8\u7684\u6570\u76ee\u8d85\u8fc7 1 \u4e2a\uff0c\u5c31\u5e94\u8be5\u8003\u8651\u589e\u5927\u5173\u952e\u5b57\u7f13\u51b2\u533a\u4e86\u3002\u4f8b\u5982\uff0c<CODE>key_buffer = 384M<\/CODE> \u4f1a\u5c06\u7f13\u51b2\u533a\u8bbe\u7f6e\u4e3a 384MB\u3002<\/P><br \/>\n<P>\u4e34\u65f6\u8868\u53ef\u4ee5\u5728\u66f4\u9ad8\u7ea7\u7684\u67e5\u8be2\u4e2d\u4f7f\u7528\uff0c\u5176\u4e2d\u6570\u636e\u5728\u8fdb\u4e00\u6b65\u8fdb\u884c\u5904\u7406\uff08\u4f8b\u5982 <CODE>GROUP BY<\/CODE> \u5b57\u53e5\uff09\u4e4b\u524d\uff0c\u90fd\u5fc5\u987b\u5148\u4fdd\u5b58\u5230\u4e34\u65f6\u8868\u4e2d\uff1b\u7406\u60f3\u60c5\u51b5\u4e0b\uff0c\u5728\u5185\u5b58\u4e2d\u521b\u5efa\u4e34\u65f6\u8868\u3002\u4f46\u662f\u5982\u679c\u4e34\u65f6\u8868\u53d8\u5f97\u592a\u5927\uff0c\u5c31\u9700\u8981\u5199\u5165\u78c1\u76d8\u4e2d\u3002\u6e05\u5355 7 \u7ed9\u51fa\u4e86\u4e0e\u4e34\u65f6\u8868\u521b\u5efa\u6709\u5173\u7684\u7edf\u8ba1\u4fe1\u606f\u3002<\/P><BR><A name=listing7><B>\u6e05\u5355 7. \u786e\u5b9a\u4e34\u65f6\u8868\u7684\u4f7f\u7528<\/B><\/A><BR><br \/>\n<TABLE cellSpacing=0 cellPadding=0 width=\"80%\" border=0><br \/>\n<TBODY><br \/>\n<TR><br \/>\n<TD class=code-outline><PRE class=displaycode><br \/>\nmysql&gt; SHOW STATUS LIKE &#8216;created_tmp%&#8217;;<br \/>\n+&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;-+&#8212;&#8212;-+<br \/>\n| Variable_name           | Value |<br \/>\n+&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;-+&#8212;&#8212;-+<br \/>\n| Created_tmp_disk_tables | 30660 |<br \/>\n| Created_tmp_files       | 2     |<br \/>\n| Created_tmp_tables      | 32912 |<br \/>\n+&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;-+&#8212;&#8212;-+<br \/>\n3 rows in set (0.00 sec)<\/PRE><\/TD><\/TR><\/TBODY><\/TABLE><BR><br \/>\n<P>\u6bcf\u6b21\u4f7f\u7528\u4e34\u65f6\u8868\u90fd\u4f1a\u589e\u5927 <CODE>Created_tmp_tables<\/CODE>\uff1b\u57fa\u4e8e\u78c1\u76d8\u7684\u8868\u4e5f\u4f1a\u589e\u5927 <CODE>Created_tmp_disk_tables<\/CODE>\u3002\u5bf9\u4e8e\u8fd9\u4e2a\u6bd4\u7387\uff0c\u5e76\u6ca1\u6709\u4ec0\u4e48\u4e25\u683c\u7684\u89c4\u5219\uff0c\u56e0\u4e3a\u8fd9\u4f9d\u8d56\u4e8e\u6240\u6d89\u53ca\u7684\u67e5\u8be2\u3002\u957f\u65f6\u95f4\u89c2\u5bdf <CODE>Created_tmp_disk_tables<\/CODE> \u4f1a\u663e\u793a\u6240\u521b\u5efa\u7684\u78c1\u76d8\u8868\u7684\u6bd4\u7387\uff0c\u60a8\u53ef\u4ee5\u786e\u5b9a\u8bbe\u7f6e\u7684\u6548\u7387\u3002 <CODE>tmp_table_size<\/CODE> \u548c <CODE>max_heap_table_size<\/CODE> \u90fd\u53ef\u4ee5\u63a7\u5236\u4e34\u65f6\u8868\u7684\u6700\u5927\u5927\u5c0f\uff0c\u56e0\u6b64\u8bf7\u786e\u4fdd\u5728 my.cnf \u4e2d\u5bf9\u8fd9\u4e24\u4e2a\u503c\u90fd\u8fdb\u884c\u4e86\u8bbe\u7f6e\u3002<\/P><br \/>\n<P><A name=N102B0><SPAN class=smalltitle><STRONG><FONT size=3>\u6bcf\u4e2a\u4f1a\u8bdd\u7684\u8bbe\u7f6e<\/FONT><\/STRONG><\/SPAN><\/A><\/P><br \/>\n<P>\u4e0b\u9762\u8fd9\u4e9b\u8bbe\u7f6e\u9488\u5bf9\u4e8e\u6bcf\u4e2a\u4f1a\u8bdd\u3002\u5728\u8bbe\u7f6e\u8fd9\u4e9b\u6570\u5b57\u65f6\u8981\u5341\u5206\u8c28\u614e\uff0c\u56e0\u4e3a\u5b83\u4eec\u5728\u4e58\u4ee5\u53ef\u80fd\u5b58\u5728\u7684\u8fde\u63a5\u6570\u65f6\u5019\uff0c\u8fd9\u4e9b\u9009\u9879\u8868\u793a\u5927\u91cf\u7684\u5185\u5b58\uff01\u60a8\u53ef\u4ee5\u901a\u8fc7\u4ee3\u7801\u4fee\u6539\u4f1a\u8bdd\u4e2d\u7684\u8fd9\u4e9b\u6570\u5b57\uff0c\u6216\u8005\u5728 my.cnf \u4e2d\u4e3a\u6240\u6709\u4f1a\u8bdd\u4fee\u6539\u8fd9\u4e9b\u8bbe\u7f6e\u3002<\/P><br \/>\n<P>\u5f53 MySQL \u5fc5\u987b\u8981\u8fdb\u884c\u6392\u5e8f\u65f6\uff0c\u5c31\u4f1a\u5728\u4ece\u78c1\u76d8\u4e0a\u8bfb\u53d6\u6570\u636e\u65f6\u5206\u914d\u4e00\u4e2a\u6392\u5e8f\u7f13\u51b2\u533a\u6765\u5b58\u653e\u8fd9\u4e9b\u6570\u636e\u884c\u3002\u5982\u679c\u8981\u6392\u5e8f\u7684\u6570\u636e\u592a\u5927\uff0c\u90a3\u4e48\u6570\u636e\u5c31\u5fc5\u987b\u4fdd\u5b58\u5230\u78c1\u76d8\u4e0a\u7684\u4e34\u65f6\u6587\u4ef6\u4e2d\uff0c\u5e76\u518d\u6b21\u8fdb\u884c\u6392\u5e8f\u3002\u5982\u679c <CODE>sort_merge_passes<\/CODE> \u72b6\u6001\u53d8\u91cf\u5f88\u5927\uff0c\u8fd9\u5c31\u6307\u793a\u4e86\u78c1\u76d8\u7684\u6d3b\u52a8\u60c5\u51b5\u3002\u6e05\u5355 8 \u7ed9\u51fa\u4e86\u4e00\u4e9b\u4e0e\u6392\u5e8f\u76f8\u5173\u7684\u72b6\u6001\u8ba1\u6570\u5668\u4fe1\u606f\u3002<\/P><BR><A name=listing8><B>\u6e05\u5355 8. \u663e\u793a\u6392\u5e8f\u7edf\u8ba1\u4fe1\u606f<\/B><\/A><BR><br \/>\n<TABLE cellSpacing=0 cellPadding=0 width=\"80%\" border=0><br \/>\n<TBODY><br \/>\n<TR><br \/>\n<TD class=code-outline><PRE class=displaycode><br \/>\nmysql&gt; SHOW STATUS LIKE &#8220;sort%&#8221;;<br \/>\n+&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;-+&#8212;&#8212;&#8212;+<br \/>\n| Variable_name     | Value   |<br \/>\n+&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;-+&#8212;&#8212;&#8212;+<br \/>\n| Sort_merge_passes | 1       |<br \/>\n| Sort_range        | 79192   |<br \/>\n| Sort_rows         | 2066532 |<br \/>\n| Sort_scan         | 44006   |<br \/>\n+&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;-+&#8212;&#8212;&#8212;+<br \/>\n4 rows in set (0.00 sec)<\/PRE><\/TD><\/TR><\/TBODY><\/TABLE><BR><br \/>\n<P>\u5982\u679c <CODE>sort_merge_passes<\/CODE> \u5f88\u5927\uff0c\u5c31\u8868\u793a\u9700\u8981\u6ce8\u610f <CODE>sort_buffer_size<\/CODE>\u3002\u4f8b\u5982\uff0c <CODE>sort_buffer_size = 4M<\/CODE> \u5c06\u6392\u5e8f\u7f13\u51b2\u533a\u8bbe\u7f6e\u4e3a 4MB\u3002<\/P><br \/>\n<P>MySQL \u4e5f\u4f1a\u5206\u914d\u4e00\u4e9b\u5185\u5b58\u6765\u8bfb\u53d6\u8868\u3002\u7406\u60f3\u60c5\u51b5\u4e0b\uff0c\u7d22\u5f15\u63d0\u4f9b\u4e86\u8db3\u591f\u591a\u7684\u4fe1\u606f\uff0c\u53ef\u4ee5\u53ea\u8bfb\u5165\u6240\u9700\u8981\u7684\u884c\uff0c\u4f46\u662f\u6709\u65f6\u5019\u67e5\u8be2\uff08\u8bbe\u8ba1\u4e0d\u4f73\u6216\u6570\u636e\u672c\u6027\u4f7f\u7136\uff09\u9700\u8981\u8bfb\u53d6\u8868\u4e2d\u5927\u91cf\u6570\u636e\u3002\u8981\u7406\u89e3\u8fd9\u79cd\u884c\u4e3a\uff0c\u9700\u8981\u77e5\u9053\u8fd0\u884c\u4e86\u591a\u5c11\u4e2a <CODE>SELECT<\/CODE> \u8bed\u53e5\uff0c\u4ee5\u53ca\u9700\u8981\u8bfb\u53d6\u8868\u4e2d\u7684\u4e0b\u4e00\u884c\u6570\u636e\u7684\u6b21\u6570\uff08\u800c\u4e0d\u662f\u901a\u8fc7\u7d22\u5f15\u76f4\u63a5\u8bbf\u95ee\uff09\u3002\u5b9e\u73b0\u8fd9\u79cd\u529f\u80fd\u7684\u547d\u4ee4\u5982\u6e05\u5355 9 \u6240\u793a\u3002<\/P><BR><A name=listing9><B>\u6e05\u5355 9. \u786e\u5b9a\u8868\u626b\u63cf\u6bd4\u7387<\/B><\/A><BR><br \/>\n<TABLE cellSpacing=0 cellPadding=0 width=\"80%\" border=0><br \/>\n<TBODY><br \/>\n<TR><br \/>\n<TD class=code-outline><PRE class=displaycode><br \/>\nmysql&gt; SHOW STATUS LIKE &#8220;com_select&#8221;;<br \/>\n+&#8212;&#8212;&#8212;&#8212;&#8212;+&#8212;&#8212;&#8211;+<br \/>\n| Variable_name | Value  |<br \/>\n+&#8212;&#8212;&#8212;&#8212;&#8212;+&#8212;&#8212;&#8211;+<br \/>\n| Com_select    | 318243 |<br \/>\n+&#8212;&#8212;&#8212;&#8212;&#8212;+&#8212;&#8212;&#8211;+<br \/>\n1 row in set (0.00 sec)<\/p>\n<p>mysql&gt; SHOW STATUS LIKE &#8220;handler_read_rnd_next&#8221;;<br \/>\n+&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8211;+&#8212;&#8212;&#8212;&#8211;+<br \/>\n| Variable_name         | Value     |<br \/>\n+&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8211;+&#8212;&#8212;&#8212;&#8211;+<br \/>\n| Handler_read_rnd_next | 165959471 |<br \/>\n+&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8211;+&#8212;&#8212;&#8212;&#8211;+<br \/>\n1 row in set (0.00 sec)<\/PRE><\/TD><\/TR><\/TBODY><\/TABLE><BR><br \/>\n<P><CODE>Handler_read_rnd_next<\/CODE> \/ <CODE>Com_select<\/CODE> \u5f97\u51fa\u4e86\u8868\u626b\u63cf\u6bd4\u7387 \u2014\u2014 \u5728\u672c\u4f8b\u4e2d\u662f 521:1\u3002\u5982\u679c\u8be5\u503c\u8d85\u8fc7 4000\uff0c\u5c31\u5e94\u8be5\u67e5\u770b <CODE>read_buffer_size<\/CODE>\uff0c\u4f8b\u5982 <CODE>read_buffer_size = 4M<\/CODE>\u3002\u5982\u679c\u8fd9\u4e2a\u6570\u5b57\u8d85\u8fc7\u4e86 8M\uff0c\u5c31\u5e94\u8be5\u4e0e\u5f00\u53d1\u4eba\u5458\u8ba8\u8bba\u4e00\u4e0b\u5bf9\u8fd9\u4e9b\u67e5\u8be2\u8fdb\u884c\u8c03\u4f18\u4e86\uff01<\/P><BR><br \/>\n<TABLE cellSpacing=0 cellPadding=0 width=\"100%\" border=0><br \/>\n<TBODY><br \/>\n<TR><br \/>\n<TD><IMG height=1 alt=\"\" src=\"http:\/\/www.ibm.com\/i\/v14\/rules\/blue_rule.gif\" width=\"100%\"><BR><IMG height=6 alt=\"\" src=\"http:\/\/www.ibm.com\/i\/c.gif\" width=8 border=0><\/TD><\/TR><\/TBODY><\/TABLE><br \/>\n<TABLE class=no-print cellSpacing=0 cellPadding=0 align=right><br \/>\n<TBODY><br \/>\n<TR align=right><br \/>\n<TD><IMG height=4 alt=\"\" src=\"http:\/\/www.ibm.com\/i\/c.gif\" width=\"100%\"><BR><br \/>\n<TABLE cellSpacing=0 cellPadding=0 border=0><br \/>\n<TBODY><br \/>\n<TR><br \/>\n<TD vAlign=center><BR><\/TD><br \/>\n<TD vAlign=top align=right><A class=fbox href=\"http:\/\/www.ibm.com\/developerworks\/cn\/linux\/l-tune-lamp-3.html#main\"><B><FONT color=#996699><\/FONT><\/B><\/A><\/TD><\/TR><\/TBODY><\/TABLE><\/TD><\/TR><\/TBODY><\/TABLE><BR><BR><br \/>\n<P><A name=N102FD><SPAN class=atitle>3 \u4e2a\u5fc5\u4e0d\u53ef\u5c11\u7684\u5de5\u5177<\/SPAN><\/A><\/P><br \/>\n<P>\u5c3d\u7ba1\u5728\u4e86\u89e3\u5177\u4f53\u8bbe\u7f6e\u65f6\uff0c<CODE>SHOW STATUS<\/CODE> \u547d\u4ee4\u4f1a\u975e\u5e38\u6709\u7528\uff0c\u4f46\u662f\u60a8\u8fd8\u9700\u8981\u4e00\u4e9b\u5de5\u5177\u6765\u89e3\u91ca <CODE>mysqld<\/CODE> \u6240\u63d0\u4f9b\u7684\u5927\u91cf\u6570\u636e\u3002\u6211\u53d1\u73b0\u6709 3 \u4e2a\u5de5\u5177\u662f\u5fc5\u4e0d\u53ef\u5c11\u7684\uff1b\u5728 <A href=\"#resources\"><FONT color=#996699>\u53c2\u8003\u8d44\u6599<\/FONT><\/A> \u4e00\u8282\u4e2d\u60a8\u53ef\u4ee5\u627e\u5230\u76f8\u5e94\u7684\u94fe\u63a5\u3002<\/P><br \/>\n<P>\u5927\u90e8\u5206\u7cfb\u7edf\u7ba1\u7406\u5458\u90fd\u975e\u5e38\u719f\u6089 <CODE>top<\/CODE> \u547d\u4ee4\uff0c\u5b83\u4e3a\u4efb\u52a1\u6240\u6d88\u8017\u7684 CPU \u548c\u5185\u5b58\u63d0\u4f9b\u4e86\u4e00\u4e2a\u4e0d\u65ad\u66f4\u65b0\u7684\u89c6\u56fe\u3002 <CODE>mytop<\/CODE> \u5bf9 <CODE>top<\/CODE> \u8fdb\u884c\u4e86\u4eff\u771f\uff1b\u5b83\u4e3a\u6240\u6709\u8fde\u63a5\u4e0a\u7684\u5ba2\u6237\u673a\u4ee5\u53ca\u5b83\u4eec\u6b63\u5728\u8fd0\u884c\u7684\u67e5\u8be2\u63d0\u4f9b\u4e86\u4e00\u4e2a\u89c6\u56fe\u3002<CODE>mytop<\/CODE> \u8fd8\u63d0\u4f9b\u4e86\u4e00\u4e2a\u6709\u5173\u5173\u952e\u5b57\u7f13\u51b2\u533a\u548c\u67e5\u8be2\u7f13\u5b58\u6548\u7387\u7684\u5b9e\u65f6\u6570\u636e\u548c\u5386\u53f2\u6570\u636e\uff0c\u4ee5\u53ca\u6709\u5173\u6b63\u5728\u8fd0\u884c\u7684\u67e5\u8be2\u7684\u7edf\u8ba1\u4fe1\u606f\u3002\u8fd9\u662f\u4e00\u4e2a\u5f88\u6709\u7528\u7684\u5de5\u5177\uff0c\u53ef\u4ee5\u67e5\u770b\u7cfb\u7edf\u4e2d\uff08\u6bd4\u5982 10 \u79d2\u949f\u4e4b\u5185\uff09\u7684\u72b6\u51b5\uff0c\u60a8\u53ef\u4ee5\u83b7\u5f97\u6709\u5173\u670d\u52a1\u5668\u5065\u5eb7\u4fe1\u606f\u7684\u89c6\u56fe\uff0c\u5e76\u663e\u793a\u5bfc\u81f4\u95ee\u9898\u7684\u4efb\u4f55\u8fde\u63a5\u3002<\/P><br \/>\n<P><CODE>mysqlard<\/CODE> \u662f\u4e00\u4e2a\u8fde\u63a5\u5230 MySQL \u670d\u52a1\u5668\u4e0a\u7684\u5b88\u62a4\u7a0b\u5e8f\uff0c\u8d1f\u8d23\u6bcf 5 \u5206\u949f\u641c\u96c6\u4e00\u6b21\u6570\u636e\uff0c\u5e76\u5c06\u5b83\u4eec\u5b58\u50a8\u5230\u540e\u53f0\u7684\u4e00\u4e2a Round Robin Database \u4e2d\u3002\u6709\u4e00\u4e2a Web \u9875\u9762\u4f1a\u663e\u793a\u8fd9\u4e9b\u6570\u636e\uff0c\u4f8b\u5982\u8868\u7f13\u5b58\u7684\u4f7f\u7528\u60c5\u51b5\u3001\u5173\u952e\u5b57\u6548\u7387\u3001\u8fde\u63a5\u4e0a\u7684\u5ba2\u6237\u673a\u4ee5\u53ca\u4e34\u65f6\u8868\u7684\u4f7f\u7528\u60c5\u51b5\u3002\u5c3d\u7ba1 <CODE>mytop<\/CODE> \u63d0\u4f9b\u4e86\u670d\u52a1\u5668\u5065\u5eb7\u4fe1\u606f\u7684\u5feb\u7167\uff0c\u4f46\u662f <CODE>mysqlard<\/CODE> \u5219\u63d0\u4f9b\u4e86\u957f\u671f\u7684\u5065\u5eb7\u4fe1\u606f\u3002\u4f5c\u4e3a\u5956\u52b1\uff0c<CODE>mysqlard<\/CODE> \u4f7f\u7528\u81ea\u5df1\u641c\u96c6\u5230\u7684\u4e00\u4e9b\u4fe1\u606f\u9488\u5bf9\u5982\u4f55\u5bf9\u670d\u52a1\u5668\u8fdb\u884c\u8c03\u4f18\u7ed9\u51fa\u4e00\u4e9b\u5efa\u8bae\u3002<\/P><br \/>\n<P>\u641c\u96c6 <CODE>SHOW STATUS<\/CODE> \u4fe1\u606f\u7684\u53e6\u5916\u4e00\u4e2a\u5de5\u5177\u662f <CODE>mysqlreport<\/CODE>\u3002\u5176\u62a5\u544a\u8981\u8fdc\u6bd4 <CODE>mysqlard<\/CODE> \u66f4\u52a0\u590d\u6742\uff0c\u56e0\u4e3a\u9700\u8981\u5bf9\u670d\u52a1\u5668\u7684\u6bcf\u4e2a\u65b9\u9762\u90fd\u8fdb\u884c\u5206\u6790\u3002\u8fd9\u662f\u5bf9\u670d\u52a1\u5668\u8fdb\u884c\u8c03\u4f18\u7684\u4e00\u4e2a\u975e\u5e38\u597d\u7684\u5de5\u5177\uff0c\u56e0\u4e3a\u5b83\u5bf9\u72b6\u6001\u53d8\u91cf\u8fdb\u884c\u9002\u5f53\u8ba1\u7b97\u6765\u5e2e\u52a9\u786e\u5b9a\u9700\u8981\u4fee\u6b63\u54ea\u4e9b\u95ee\u9898\u3002<\/P><br \/>\n<DIV><A name=N10347><SPAN class=atitle><FONT size=6>\u7ed3\u675f\u8bed<\/FONT><\/SPAN><\/A><\/DIV><br \/>\n<DIV>&nbsp;<\/DIV><br \/>\n<DIV>\u672c\u6587\u4ecb\u7ecd\u4e86\u5bf9 MySQL \u8fdb\u884c\u8c03\u4f18\u7684\u4e00\u4e9b\u57fa\u7840\u77e5\u8bc6\uff0c\u5e76\u5bf9\u8fd9\u4e2a\u9488\u5bf9 LAMP \u7ec4\u4ef6\u8fdb\u884c\u8c03\u4f18\u7684 3 \u90e8\u5206\u7cfb\u5217\u6587\u7ae0\u8fdb\u884c\u4e86\u603b\u7ed3\u3002\u8c03\u4f18\u5f88\u5927\u7a0b\u5ea6\u4e0a\u9700\u8981\u7406\u89e3\u7ec4\u4ef6\u7684\u5de5\u4f5c\u539f\u7406\uff0c\u786e\u5b9a\u5b83\u4eec\u662f\u5426\u6b63\u5e38\u5de5\u4f5c\uff0c\u8fdb\u884c\u4e00\u4e9b\u8c03\u6574\uff0c\u5e76\u91cd\u65b0\u8bc4\u6d4b\u3002\u6bcf\u4e2a\u7ec4\u4ef6 \u2014\u2014 Linux\u3001Apache\u3001PHP \u6216 MySQL \u2014\u2014 \u90fd\u6709\u5404\u79cd\u5404\u6837\u7684\u9700\u6c42\u3002\u5206\u522b\u7406\u89e3\u5404\u4e2a\u7ec4\u4ef6\u53ef\u4ee5\u5e2e\u52a9\u51cf\u5c11\u53ef\u80fd\u4f1a\u5bfc\u81f4\u5e94\u7528\u7a0b\u5e8f\u901f\u5ea6\u53d8\u6162\u7684\u74f6\u9888\u3002<\/DIV><br \/>\n<DIV>&nbsp;<\/DIV><br \/>\n<DIV><br \/>\n<P><A name=resources><SPAN class=atitle>\u53c2\u8003\u8d44\u6599 <\/SPAN><\/A><\/P><B>\u5b66\u4e60<\/B><BR><br \/>\n<UL><br \/>\n<LI>\u60a8\u53ef\u4ee5\u53c2\u9605\u672c\u6587\u5728 developerWorks \u5168\u7403\u7ad9\u70b9\u4e0a\u7684 <A href=\"http:\/\/www.ibm.com\/developerworks\/linux\/library\/l-tune-lamp-3.html?S_TACT=105AGX52&amp;S_CMP=cn-a-l\" target=_blank><FONT color=#5c81a7>\u82f1\u6587\u539f\u6587<\/FONT><\/A>\u3002<BR><BR><br \/>\n<LI>\u201c<A href=\"http:\/\/www.ibm.com\/developerworks\/cn\/db2\/library\/techarticles\/dm-0606khatri\/\"><FONT color=#996699>\u4ece MySQL \u6216 PostgreSQL \u8fc1\u79fb\u5230 DB2 Express-C<\/FONT><\/A>\u201d\uff08developerWorks\uff0c2006 \u5e74 6 \u6708\uff09\u63d0\u4f9b\u4e86\u4e00\u79cd\u4ece MySQL \u8fc1\u79fb\u5230 DB2 Express-C \u4e0a\u7684\u7b80\u5355\u65b9\u6cd5\u3002 <BR><BR><br \/>\n<LI>IBM \u8fd8\u4e3a\u90a3\u4e9b\u5e0c\u671b\u8fc1\u79fb\u5230 DB2 Express-C \u4e0a\u7684 MySQL \u7ba1\u7406\u5458\u63d0\u4f9b\u4e86\u5e2e\u52a9\uff0c\u8bf7\u53c2\u9605\uff1a\u201c<A href=\"http:\/\/www.ibm.com\/developerworks\/cn\/db2\/library\/techarticles\/dm-0602tham2\/\"><FONT color=#5c81a7>\u5229\u7528 MySQL \u6280\u80fd\u5b66\u4e60 DB2 Express: DB2 \u4e0e MySQL \u7684\u7ba1\u7406\u4efb\u52a1\u548c\u57fa\u672c\u4efb\u52a1<\/FONT><\/A>\u201d\uff08developerWorks\uff0c2006 \u5e74 2 \u6708\uff09\u4ee5\u53ca\u672c\u7cfb\u5217\u6587\u7ae0\u7684\u5176\u4ed6\u90e8\u5206\u3002<BR><BR><br \/>\n<LI>\u201c<A href=\"http:\/\/www.ibm.com\/developerworks\/cn\/views\/db2\/tutorials.jsp?cv_doc_id=85242\"><FONT color=#5c81a7>\u5728\u8054\u90a6\u6570\u636e\u5e93\u73af\u5883\u4e2d\u4f7f\u7528 MySQL <\/FONT><\/A>\u201d\uff08developerWorks\uff0c2004 \u5e74 12 \u6708\uff09\u662f\u6709\u5173\u4ece WebSphere \u4e2d\u8bbf\u95ee\u5b58\u50a8\u5728 MySQL \u4e2d\u7684\u6570\u636e\u7684\u6559\u7a0b\u3002IBM \u786e\u4fdd WebSphere\u00ae \u8f6f\u4ef6\u53ef\u4ee5\u5f88\u597d\u5730\u4e0e MySQL \u7ed3\u5408\u4f7f\u7528\u3002<BR><BR><br \/>\n<LI><A href=\"http:\/\/dev.mysql.com\/doc\/refman\/5.0\/en\/server-system-variables.html\"><FONT color=#5c81a7>SHOW VARIABLES<\/FONT><\/A> \u548c <A href=\"http:\/\/dev.mysql.com\/doc\/refman\/5.0\/en\/server-status-variables.html\"><FONT color=#5c81a7>SHOW STATUS<\/FONT><\/A> \u5728 MySQL \u6587\u6863\u4e2d\u90fd\u5df2\u7ecf\u5f88\u597d\u5730\u8fdb\u884c\u4e86\u5b9a\u4e49\u3002 <BR><BR><br \/>\n<LI>\u5982\u679c\u559c\u6b22 blogs\uff0c<A href=\"http:\/\/www.mysqlperformanceblog.com\/\"><FONT color=#5c81a7>MySQL Performance Blog<\/FONT><\/A>\u3001 <A href=\"http:\/\/www.xaprb.com\/blog\/\"><FONT color=#5c81a7>Xaprb<\/FONT><\/A> \u4ee5\u53ca <A href=\"http:\/\/mysqldatabaseadministration.blogspot.com\/\"><FONT color=#5c81a7>MySQL DBA<\/FONT><\/A> \u90fd\u975e\u5e38\u503c\u5f97\u9605\u8bfb\u3002<BR><BR><br \/>\n<LI>\u5728 <A href=\"http:\/\/www.ibm.com\/developerworks\/cn\/architecture\"><FONT color=#5c81a7>developerWorks \u4e0a Architecture \u4e13\u533a<\/FONT><\/A> \u4e2d\uff0c\u53ef\u4ee5\u627e\u5230\u63d0\u9ad8\u67b6\u6784\u8bbe\u8ba1\u9886\u57df\u65b9\u9762\u6280\u80fd\u6240\u9700\u8981\u7684\u4e00\u4e9b\u8d44\u6e90\u3002\u5f00\u53d1\u6b63\u786e\u7684\u67b6\u6784\u662f\u6269\u5c55 LAMP \u5e94\u7528\u7a0b\u5e8f\u7684\u5173\u952e\u3002<BR><BR><br \/>\n<LI>\u5728 <A href=\"http:\/\/www.ibm.com\/developerworks\/cn\/linux\/\"><FONT color=#996699>developerWorks Linux \u4e13\u533a<\/FONT><\/A> \u4e2d\u53ef\u627e\u5230\u9002\u5408\u4e8e Linux \u5f00\u53d1\u4eba\u5458\u7684\u66f4\u591a\u8d44\u6e90\uff0c\u5305\u62ec <A href=\"http:\/\/www.ibm.com\/developerworks\/cn\/views\/linux\/tutorials.jsp\"><FONT color=#5c81a7>Linux \u6559\u7a0b<\/FONT><\/A> \u4ee5\u53ca\u4e0a\u6708 <A href=\"http:\/\/www.ibm.com\/developerworks\/cn\/linux\/top10\/\"><FONT color=#5c81a7>\u8bfb\u8005\u6700\u559c\u6b22\u7684 Linux \u6587\u7ae0\u548c\u6559\u7a0b<\/FONT><\/A>\u3002 <BR><BR><br \/>\n<LI>\u968f\u65f6\u5173\u6ce8 <A href=\"http:\/\/www.ibm.com\/developerworks\/offers\/techbriefings\/?S_TACT=105AGX52&amp;S_CMP=cn-a-l\"><FONT color=#5c81a7>developerWorks \u6280\u672f\u4e8b\u4ef6\u548c\u7f51\u7edc\u5e7f\u64ad<\/FONT><\/A>\u3002<\/LI><\/UL><BR><B>\u83b7\u5f97\u4ea7\u54c1\u548c\u6280\u672f<\/B><BR><br \/>\n<UL><br \/>\n<LI>\u5c3d\u7ba1\u5df2\u7ecf\u51fa\u7248\u4e86 3 \u5e74\u4e4b\u4e45\u4e86\uff0c<I> <A href=\"http:\/\/highperformancemysql.com\/\"><FONT color=#5c81a7>High Performance MySQL<\/FONT><\/A> <\/I>\u4ecd\u7136\u662f\u975e\u5e38\u6709\u4ef7\u503c\u7684\u4e00\u672c\u4e66\u3002\u4f5c\u8005\u4e5f\u6709\u4e00\u4e2a Web \u7ad9\u70b9\u4ecb\u7ecd <A href=\"http:\/\/jeremy.zawodny.com\/mysql\/\"><FONT color=#5c81a7>\u6709\u5173 MySQL \u7684\u5404\u79cd\u6587\u7ae0<\/FONT><\/A>\u3002 <BR><BR><br \/>\n<LI><A href=\"http:\/\/jeremy.zawodny.com\/mysql\/mytop\/\"><FONT color=#5c81a7>mytop<\/FONT><\/A> \u544a\u8bc9\u60a8\u76ee\u524d MySQL \u670d\u52a1\u5668\u4e0a\u90fd\u5728\u8fdb\u884c\u4ec0\u4e48\u64cd\u4f5c\uff0c\u5e76\u63d0\u4f9b\u4e00\u4e9b\u5173\u952e\u7684\u7edf\u8ba1\u4fe1\u606f\u3002\u5728\u53d1\u73b0\u6570\u636e\u5e93\u6709\u95ee\u9898\u65f6\uff0c\u5e94\u8be5\u9996\u5148\u6c42\u52a9\u4e8e\u8fd9\u4e2a\u7a0b\u5e8f\u3002<BR><BR><br \/>\n<LI><A href=\"http:\/\/gert.sos.be\/en\/\"><FONT color=#5c81a7>mysqlard<\/FONT><\/A> \u4f1a\u7ed9\u51fa MySQL \u670d\u52a1\u5668\u4e00\u4e2a\u5173\u952e\u6027\u80fd\u6307\u793a\u5668\u7684\u56fe\u5f62\u8868\u793a\uff0c\u5e76\u7ed9\u51fa\u4e00\u4e9b\u8c03\u4f18\u5efa\u8bae\u3002<BR><BR><br \/>\n<LI><A href=\"http:\/\/hackmysql.com\/mysqlreport\"><FONT color=#5c81a7>mysqlreport<\/FONT><\/A> \u662f\u4e00\u4e2a\u5fc5\u987b\u7684\u5de5\u5177\u3002\u5b83\u4e3a\u60a8\u5206\u6790 <CODE>SHOW STATUS<\/CODE> \u53d8\u91cf\u3002<BR><BR><br \/>\n<LI>MySQL \u6587\u7ae0\u5982\u679c\u6ca1\u6709\u63d0\u4f9b\u5230 <A href=\"http:\/\/www.phpmyadmin.net\/\"><FONT color=#5c81a7>phpMyAdmin<\/FONT><\/A> \u7684\u94fe\u63a5\uff0c\u5c31\u8bf4\u4e0d\u4e0a\u5b8c\u6574\u3002\u5c3d\u7ba1\u5df2\u7ecf\u7ed9\u51fa\u4e86\u5bf9\u72b6\u6001\u53d8\u91cf\u7684\u4e00\u4e9b\u89e3\u91ca\uff0c\u4f46\u662f\u8fd9\u4e2a\u4ea7\u54c1\u7684\u5f3a\u5927\u4e4b\u5904\u5728\u4e8e\u5982\u4f55\u7b80\u5316\u7ba1\u7406\u4efb\u52a1\u3002<BR><BR><br \/>\n<LI><A href=\"http:\/\/www.ibm.com\/developerworks\/offers\/sek\/?S_TACT=105AGX52&amp;S_CMP=cn-a-l\"><FONT color=#5c81a7>\u5b9a\u8d2d SEK for Linux<\/FONT><\/A>\uff0c\u5171\u5305\u542b\u4e24\u5f20 DVD\uff0c\u5176\u4e2d\u6709\u7528\u4e8e Linux \u7684\u6700\u65b0 IBM \u8bd5\u7528\u8f6f\u4ef6\uff0c\u5305\u62ec DB2\u00ae\u3001Lotus\u00ae\u3001Rational\u00ae\u3001Tivoli\u00ae \u548c WebSphere\u00ae\u3002 <BR><BR><br \/>\n<LI>\u5229\u7528\u53ef\u76f4\u63a5\u4ece developerWorks \u4e0b\u8f7d\u7684 <A href=\"http:\/\/www.ibm.com\/developerworks\/downloads\/?S_TACT=105AGX52&amp;S_CMP=cn-a-l\"><FONT color=#5c81a7>IBM \u8bd5\u7528\u8f6f\u4ef6<\/FONT><\/A> \u5728 Linux \u4e0a\u6784\u5efa\u60a8\u7684\u4e0b\u4e00\u4e2a\u5f00\u53d1\u9879\u76ee\u3002 <BR><BR><\/LI><\/UL><BR><B>\u8ba8\u8bba<\/B><BR><br \/>\n<UL><br \/>\n<LI>\u901a\u8fc7\u53c2\u4e0e\u65b0\u7684 <A href=\"http:\/\/www.ibm.com\/developerworks\/spaces\/?S_TACT=105AGX52&amp;S_CMP=cn-a-l\"><FONT color=#5c81a7>developerWorks \u7a7a\u95f4<\/FONT><\/A> \u4e2d\u7684\u5f00\u53d1\u8005\u535a\u5ba2\u3001\u8bba\u575b\u3001podcast \u548c\u793e\u533a\u4e3b\u9898\u52a0\u5165 <A href=\"http:\/\/www.ibm.com\/developerworks\/community?S_TACT=105AGX52&amp;S_CMP=cn-a-l\"><FONT color=#5c81a7>developerWorks \u793e\u533a<\/FONT><\/A>\u3002<BR><BR><\/LI><\/UL><\/DIV><\/p>\n","protected":false},"excerpt":{"rendered":"<p>2007 \u5e74 7 \u6708 30 \u65e5 \u5982\u4eca\uff0c\u5f00\u53d1\u4eba\u5458\u4e0d\u65ad\u5730\u5f00\u53d1\u548c\u90e8\u7f72\u4f7f\u7528 LAMP\uff08Linux\u00ae\u3001Apache\u3001MySQL \u548c PHP\/Perl\uff09\u67b6\u6784\u7684\u5e94\u7528\u7a0b\u5e8f\u3002\u4f46\u662f\uff0c\u670d\u52a1\u5668\u7ba1\u7406\u5458\u5e38\u5e38\u5bf9\u5e94\u7528\u7a0b\u5e8f\u672c\u8eab\u6ca1\u6709\u4ec0\u4e48\u63a7\u5236\u80fd\u529b\uff0c\u56e0\u4e3a\u5e94\u7528\u7a0b\u5e8f\u662f\u522b\u4eba\u7f16\u5199\u7684\u3002\u8fd9\u4efd \u5171\u4e09\u90e8\u5206\u7684\u7cfb\u5217\u6587\u7ae0 \u5c06\u8ba8\u8bba\u8bb8\u591a\u670d\u52a1\u5668\u914d\u7f6e\u95ee\u9898\uff0c\u8fd9\u4e9b\u914d\u7f6e\u4f1a\u5f71\u54cd\u5e94\u7528\u7a0b\u5e8f\u7684\u6027\u80fd\u3002\u672c\u6587\u662f\u672c\u7cfb\u5217\u6587\u7ae0\u7684\u7b2c\u4e09\u90e8\u5206\uff0c\u4e5f\u662f\u6700\u540e\u4e00\u90e8\u5206\uff0c\u5c06\u91cd\u70b9\u8ba8\u8bba\u4e3a\u5b9e\u73b0\u6700\u9ad8\u6548\u7387\u800c\u5bf9\u6570\u636e\u5e93\u5c42\u8fdb\u884c\u7684\u8c03\u4f18\u3002 \u5173\u4e8e MySQL \u8c03\u4f18 \u6709 3 \u79cd\u65b9\u6cd5\u53ef\u4ee5\u52a0\u5feb MySQL 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