{"id":1614,"date":"2019-07-02T09:58:20","date_gmt":"2019-07-02T01:58:20","guid":{"rendered":"http:\/\/www.llku.com\/?p=1614"},"modified":"2019-07-02T11:21:56","modified_gmt":"2019-07-02T03:21:56","slug":"top%e5%91%bd%e4%bb%a4%e8%a1%8c%e8%af%ad%e4%b9%89%e5%88%86%e6%9e%90%ef%bc%88%e8%bd%ac%e8%bd%bd%ef%bc%89","status":"publish","type":"post","link":"https:\/\/www.llku.com\/?p=1614","title":{"rendered":"TOP\u547d\u4ee4\u53caFree\u8bed\u4e49\u5206\u6790\uff08\u8f6c\u8f7d\uff09"},"content":{"rendered":"<p>\u63a5\u89e6 linux \u7684\u4eba\u5bf9\u4e8e top \u547d\u4ee4\u53ef\u80fd\u4e0d\u4f1a\u964c\u751f\uff08\u4e0d\u540c\u7cfb\u7edf\u540d\u5b57\u53ef\u80fd\u4e0d\u4e00\u6837\uff0c\u5982 IBM \u7684 aix \u4e2d\u53eb topas \uff09\uff0c\u5b83\u7684\u4f5c\u7528\u4e3b\u8981\u7528\u6765\u76d1\u63a7\u7cfb\u7edf\u5b9e\u65f6\u8d1f\u8f7d\u7387\u3001\u8fdb\u7a0b\u7684\u8d44\u6e90\u5360\u7528\u7387\u53ca\u5176\u5b83\u5404\u9879\u7cfb\u7edf\u72b6\u6001\u5c5e\u6027\u662f\u5426\u6b63\u5e38\u3002<\/p>\n<p>\u4e0b\u9762\u6211\u4eec\u5148\u6765\u770b\u5f20 top \u622a\u56fe\uff1a<\/p>\n<p><img src=\"http:\/\/static.oschina.net\/uploads\/space\/2013\/0830\/102609_Wre0_568818.jpg\" alt=\"\" \/><\/p>\n<h3 id=\"h3_0\">\uff081\uff09\u7cfb\u7edf\u3001\u4efb\u52a1\u7edf\u8ba1\u4fe1\u606f\uff1a<\/h3>\n<p>\u524d 8 \u884c\u662f\u7cfb\u7edf\u6574\u4f53\u7684\u7edf\u8ba1\u4fe1\u606f\u3002\u7b2c 1 \u884c\u662f\u4efb\u52a1\u961f\u5217\u4fe1\u606f\uff0c\u540c uptime \u547d\u4ee4\u7684\u6267\u884c\u7ed3\u679c\u3002\u5176\u5185\u5bb9\u5982\u4e0b\uff1a<\/p>\n<table class=\"ke-zeroborder\" border=\"0\" cellspacing=\"1\">\n<tbody>\n<tr>\n<td>01:06:48<\/td>\n<td>\u5f53\u524d\u65f6\u95f4<\/td>\n<\/tr>\n<tr>\n<td>up 1:22<\/td>\n<td>\u7cfb\u7edf\u8fd0\u884c\u65f6\u95f4\uff0c\u683c\u5f0f\u4e3a\u65f6:\u5206<\/td>\n<\/tr>\n<tr>\n<td>1 user<\/td>\n<td>\u5f53\u524d\u767b\u5f55\u7528\u6237\u6570<\/td>\n<\/tr>\n<tr>\n<td>load average: 0.06, 0.60, 0.48<\/td>\n<td>\u7cfb\u7edf\u8d1f\u8f7d\uff0c\u5373\u4efb\u52a1\u961f\u5217\u7684\u5e73\u5747\u957f\u5ea6\u3002\u4e09\u4e2a\u6570\u503c\u5206\u522b\u4e3a 1\u5206\u949f\u30015\u5206\u949f\u300115\u5206\u949f\u524d\u5230\u73b0\u5728\u7684\u5e73\u5747\u503c\u3002<\/p>\n<p><strong>\u6ce8\u610f\uff1a<\/strong>\u8fd9\u4e09\u4e2a\u503c\u53ef\u4ee5\u7528\u6765\u5224\u5b9a\u7cfb\u7edf\u662f\u5426\u8d1f\u8f7d\u8fc7\u9ad8\u2014\u2014\u5982\u679c\u503c<\/p>\n<p>\u6301\u7eed\u5927\u4e8e\u7cfb\u7edf cpu \u4e2a\u6570\uff0c\u5c31\u9700\u8981\u4f18\u5316\u4f60\u7684\u7a0b\u5e8f\u6216\u8005\u67b6\u6784\u4e86\u3002<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3 id=\"h3_1\">\uff082\uff09\u8fdb\u7a0b\u3001 cpu \u7edf\u8ba1\u4fe1\u606f\uff1a<\/h3>\n<p>\u7b2c 2~6 \u884c\u4e3a\u8fdb\u7a0b\u548cCPU\u7684\u4fe1\u606f\u3002\u5f53\u6709\u591a\u4e2aCPU\u65f6\uff0c\u8fd9\u4e9b\u5185\u5bb9\u53ef\u80fd\u4f1a\u8d85\u8fc7\u4e24\u884c\u3002\u5185\u5bb9\u5982\u4e0b\uff1a<\/p>\n<table class=\"ke-zeroborder\" border=\"0\" cellspacing=\"1\">\n<tbody>\n<tr>\n<td>Tasks: 29 total<\/td>\n<td>\u8fdb\u7a0b\u603b\u6570<\/td>\n<\/tr>\n<tr>\n<td>1 running<\/td>\n<td>\u6b63\u5728\u8fd0\u884c\u7684\u8fdb\u7a0b\u6570<\/td>\n<\/tr>\n<tr>\n<td>28 sleeping<\/td>\n<td>\u7761\u7720\u7684\u8fdb\u7a0b\u6570<\/td>\n<\/tr>\n<tr>\n<td>0 stopped<\/td>\n<td>\u505c\u6b62\u7684\u8fdb\u7a0b\u6570<\/td>\n<\/tr>\n<tr>\n<td>0 zombie<\/td>\n<td>\u50f5\u5c38\u8fdb\u7a0b\u6570<\/td>\n<\/tr>\n<tr>\n<td>Cpu(s): 0.3% us<\/td>\n<td>\u7528\u6237\u7a7a\u95f4\u5360\u7528CPU\u767e\u5206\u6bd4<\/td>\n<\/tr>\n<tr>\n<td>1.0% sy<\/td>\n<td>\u5185\u6838\u7a7a\u95f4\u5360\u7528CPU\u767e\u5206\u6bd4<\/td>\n<\/tr>\n<tr>\n<td>0.0% ni<\/td>\n<td>\u7528\u6237\u8fdb\u7a0b\u7a7a\u95f4\u5185\u6539\u53d8\u8fc7\u4f18\u5148\u7ea7\u7684\u8fdb\u7a0b\u5360\u7528CPU\u767e\u5206\u6bd4<\/td>\n<\/tr>\n<tr>\n<td>98.7% id<\/td>\n<td>\u7a7a\u95f2CPU\u767e\u5206\u6bd4<\/td>\n<\/tr>\n<tr>\n<td>0.0% wa<\/td>\n<td>\u7b49\u5f85\u8f93\u5165\u8f93\u51fa\u7684CPU\u65f6\u95f4\u767e\u5206\u6bd4<\/td>\n<\/tr>\n<tr>\n<td>0.0% hi<\/td>\n<td>Hardware IRQ<\/td>\n<\/tr>\n<tr>\n<td>0.0% si<\/td>\n<td>Software IRQ<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u6ce8\uff1a<\/p>\n<p>\uff081\uff09IRQ: IRQ\u5168\u79f0\u4e3aInterrupt Request\uff0c\u5373\u662f\u201c\u4e2d\u65ad\u8bf7\u6c42\u201d\u7684\u610f\u601d\u3002<\/p>\n<p>\uff082\uff09st(Steal Time)\uff1astole time \u7684\u7f29\u5199\uff0c\u8be5\u9879\u6307\u6807\u53ea\u5bf9\u865a\u62df\u673a\u6709\u6548\uff0c\u8868\u793a\u5206\u914d\u7ed9\u5f53\u524d\u865a\u62df\u673a\u7684 CPU \u65f6\u95f4\u4e4b\u4e2d\uff0c\u88ab\u540c\u4e00\u53f0\u7269\u7406\u673a\u4e0a\u7684\u5176\u4ed6\u865a\u62df\u673a\u5077\u8d70\u7684\u65f6\u95f4\u767e\u5206\u6bd4<\/p>\n<blockquote><p>So, relatively speaking, what does this mean? A high steal percentage may mean that you may be outgrowing your virtual machine with your hosting company. Other virtual machines may have a larger slice of the CPU\u2019s time and you may need to ask for an upgrade in order to compete. Also, a high steal percentage may mean that your hosting company is overselling virtual machines on your particular server. If you upgrade your virtual machine and your steal percentage doesn\u2019t drop, you may want to seek another provider. A low steal percentage can mean that your applications are working well with your current virtual machine. Since your VM is not wrestling with other VM\u2019s constantly for CPU time, your VM will be more responsive. This may also suggest that your hosting provider is underselling their servers, which is definitely a good thing.0.0% sisi(Software Interrupts)<\/p><\/blockquote>\n<h3 id=\"h3_2\">\uff083\uff09\u6700\u540e\u4e24\u884c\u4e3a\u5185\u5b58\u4fe1\u606f\uff1a<\/h3>\n<table class=\"ke-zeroborder\" border=\"0\" cellspacing=\"1\">\n<tbody>\n<tr>\n<td>Mem: 191272k total<\/td>\n<td>\u7269\u7406\u5185\u5b58\u603b\u91cf<\/td>\n<\/tr>\n<tr>\n<td>173656k used<\/td>\n<td>\u4f7f\u7528\u7684\u7269\u7406\u5185\u5b58\u603b\u91cf<\/td>\n<\/tr>\n<tr>\n<td>17616k free<\/td>\n<td>\u7a7a\u95f2\u5185\u5b58\u603b\u91cf<\/td>\n<\/tr>\n<tr>\n<td>22052k buffers<\/td>\n<td>\u7528\u4f5c\u5185\u6838\u7f13\u5b58\u7684\u5185\u5b58\u91cf<\/td>\n<\/tr>\n<tr>\n<td>Swap: 192772k total<\/td>\n<td>\u4ea4\u6362\u533a\u603b\u91cf<\/td>\n<\/tr>\n<tr>\n<td>0k used<\/td>\n<td>\u4f7f\u7528\u7684\u4ea4\u6362\u533a\u603b\u91cf<\/td>\n<\/tr>\n<tr>\n<td>192772k free<\/td>\n<td>\u7a7a\u95f2\u4ea4\u6362\u533a\u603b\u91cf<\/td>\n<\/tr>\n<tr>\n<td>123988k cached<\/td>\n<td>\u7f13\u51b2\u7684\u4ea4\u6362\u533a\u603b\u91cf\u3002<br \/>\n\u5185\u5b58\u4e2d\u7684\u5185\u5bb9\u88ab\u6362\u51fa\u5230\u4ea4\u6362\u533a\uff0c\u800c\u540e\u53c8\u88ab\u6362\u5165\u5230\u5185\u5b58\uff0c\u4f46\u4f7f\u7528\u8fc7\u7684\u4ea4\u6362\u533a\u5c1a\u672a\u88ab\u8986\u76d6\uff0c<br \/>\n\u8be5\u6570\u503c\u5373\u4e3a\u8fd9\u4e9b<strong>\u5185\u5bb9\u5df2\u5b58\u5728\u4e8e\u5185\u5b58\u4e2d<\/strong>\u7684\u4ea4\u6362\u533a\u7684\u5927\u5c0f\u3002<br \/>\n\u76f8\u5e94\u7684\u5185\u5b58\u518d\u6b21\u88ab\u6362\u51fa\u65f6\u53ef\u4e0d\u5fc5\u518d\u5bf9\u4ea4\u6362\u533a\u5199\u5165\u3002<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>PS\uff1a<strong>\u5982\u4f55\u8ba1\u7b97\u53ef\u7528\u5185\u5b58\u548c\u5df2\u7528\u5185\u5b58\uff1f<\/strong><\/p>\n<p>\u9664\u4e86 free -m \u4e4b\u5916\uff0c\u4e5f\u53ef\u4ee5\u770b top\uff1a<\/p>\n<pre class=\"hljs cpp\">Mem:\u00a0\u00a0\u00a0\u00a0<span class=\"hljs-number\">255592<\/span>k\u00a0total,\u00a0\u00a0\u00a0<span class=\"hljs-number\">167568<\/span>k\u00a0used,\u00a0\u00a0\u00a0\u00a0<span class=\"hljs-number\">88024<\/span>k\u00a0<span class=\"hljs-built_in\">free<\/span>,\u00a0\u00a0\u00a0\u00a0<span class=\"hljs-number\">25068<\/span>k\u00a0buffers\r\nSwap:\u00a0\u00a0\u00a0<span class=\"hljs-number\">524280<\/span>k\u00a0total,\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"hljs-number\">0<\/span>k\u00a0used,\u00a0\u00a0\u00a0<span class=\"hljs-number\">524280<\/span>k\u00a0<span class=\"hljs-built_in\">free<\/span>,\u00a0\u00a0\u00a0\u00a0<span class=\"hljs-number\">85724<\/span>k\u00a0cached<\/pre>\n<h4 id=\"h4_3\">3.1 \u00a0\u5b9e\u9645\u7684\u7a0b\u5e8f\u53ef\u7528\u5185\u5b58\u6570\u600e\u4e48\u7b97\u5462\uff1f<\/h4>\n<p>The answer is: free + (buffers + cached)<\/p>\n<p>88024k + (25068k + 85724k) = 198816k<\/p>\n<h4 id=\"h4_4\">3.2 \u00a0\u7a0b\u5e8f\u5df2\u7528\u5185\u5b58\u6570\u53c8\u600e\u4e48\u7b97\u5462\uff1f<\/h4>\n<p>The answer is: used \u2013 (buffers + cached)<\/p>\n<p>167568k \u2013 (25068k + 85724k) = 56776k<\/p>\n<h4 id=\"h4_5\">3.3 \u00a0\u600e\u4e48\u5224\u65ad\u7cfb\u7edf\u662f\u5426\u5185\u5b58\u4e0d\u8db3\u5462\uff1f<\/h4>\n<p>\u5982\u679c\u4f60\u7684 swap used \u6570\u503c\u5927\u4e8e 0 \uff0c\u57fa\u672c\u53ef\u4ee5\u5224\u65ad\u5df2\u7ecf\u9047\u5230\u5185\u5b58\u74f6\u9888\u4e86\uff0c\u8981\u4e48\u4f18\u5316\u4f60\u7684\u4ee3\u7801\uff0c\u8981\u4e48\u52a0\u5185\u5b58\u3002<\/p>\n<h4 id=\"h4_6\">3.4 \u00a0buffer \u4e0ecache \u7684\u533a\u522b<\/h4>\n<p>A buffer is something that has yet to be \u201cwritten\u201d to disk. A cache is something that has been \u201cread\u201d from the disk and stored for later use \u4ece\u5e94\u7528\u7a0b\u5e8f\u89d2\u5ea6\u6765\u770b\uff0cbuffers\/cached \u662f\u7b49\u4e8e\u53ef\u7528\u7684\uff0c\u56e0\u4e3abuffer\/cached\u662f\u4e3a\u4e86\u63d0\u9ad8\u6587\u4ef6\u8bfb\u5199\u7684\u6027\u80fd\uff0c\u5f53\u5e94\u7528\u7a0b\u5e8f\u9700\u5728\u7528\u5230\u5185\u5b58\u7684\u65f6\u5019\uff0cbuffer\/cached\u4f1a\u5f88\u5feb\u5730\u88ab\u56de\u6536\u3002<br \/>\n\u6240\u4ee5\u4ece\u5e94\u7528\u7a0b\u5e8f\u7684\u89d2\u5ea6\u6765\u8bf4\uff0c\u53ef\u7528\u5185\u5b58\u00a0= \u7cfb\u7edffree memory\u00a0+\u00a0buffers\u00a0+\u00a0cached.<\/p>\n<p>buffers\u662f\u6307\u7528\u6765\u7ed9\u5757\u8bbe\u5907\u505a\u7684\u7f13\u51b2\u5927\u5c0f\uff0c\u4ed6\u53ea\u8bb0\u5f55\u6587\u4ef6\u7cfb\u7edf\u7684metadata\u4ee5\u53ca tracking in-flight pages.<br \/>\ncached\u662f\u7528\u6765\u7ed9\u6587\u4ef6\u505a\u7f13\u51b2\u3002<br \/>\n\u90a3\u5c31\u662f\u8bf4\uff1abuffers\u662f\u7528\u6765\u5b58\u50a8\uff0c\u76ee\u5f55\u91cc\u9762\u6709\u4ec0\u4e48\u5185\u5bb9\uff0c\u6743\u9650\u7b49\u7b49\u3002<br \/>\n\u800ccached\u76f4\u63a5\u7528\u6765\u8bb0\u5fc6\u6211\u4eec\u6253\u5f00\u7684\u6587\u4ef6\uff0c\u5982\u679c\u4f60\u60f3\u77e5\u9053\u4ed6\u662f\u4e0d\u662f\u771f\u7684\u751f\u6548\uff0c\u4f60\u53ef\u4ee5\u8bd5\u4e00\u4e0b\uff0c\u5148\u540e\u6267\u884c\u4e24\u6b21\u547d\u4ee4#man X ,\u4f60\u5c31\u53ef\u4ee5\u660e\u663e\u7684\u611f\u89c9\u5230\u7b2c\u4e8c\u6b21\u7684\u5f00\u6253\u7684\u901f\u5ea6\u5feb\u5f88\u591a\u3002<\/p>\n<p>\u5b9e\u9a8c\uff1a\u5728\u4e00\u53f0\u6ca1\u6709\u4ec0\u4e48\u5e94\u7528\u7684\u673a\u5668\u4e0a\u505a\u4f1a\u770b\u5f97\u6bd4\u8f83\u660e\u663e\u3002\u8bb0\u5f97\u5b9e\u9a8c\u53ea\u80fd\u505a\u4e00\u6b21\uff0c\u5982\u679c\u60f3\u591a\u505a\u8bf7\u6362\u4e00\u4e2a\u6587\u4ef6\u540d\u3002<\/p>\n<p>#free<br \/>\n#man X<br \/>\n#free<br \/>\n#man X<br \/>\n#free<br \/>\n\u4f60\u53ef\u4ee5\u5148\u540e\u6bd4\u8f83\u4e00\u4e0bfree\u540e\u663e\u793abuffers\u7684\u5927\u5c0f\u3002<br \/>\n\u53e6\u4e00\u4e2a\u5b9e\u9a8c\uff1a<br \/>\n#free<br \/>\n#ls \/dev<br \/>\n#free<br \/>\n\u4f60\u6bd4\u8f83\u4e00\u4e0b\u4e24\u4e2a\u7684\u5927\u5c0f\uff0c\u5f53\u7136\u8fd9\u4e2abuffers\u968f\u65f6\u90fd\u5728\u589e\u52a0\uff0c\u4f46\u4f60\u6709ls\u8fc7\u7684\u8bdd\uff0c\u589e\u52a0\u7684\u901f\u5ea6\u4f1a\u53d8\u5f97\u5feb\uff0c\u8fd9\u4e2a\u5c31\u662fbuffers\/chached\u7684\u533a\u522b\u3002<br \/>\n\u56e0\u4e3aLinux\u5c06\u4f60\u6682\u65f6\u4e0d\u4f7f\u7528\u7684\u5185\u5b58\u4f5c\u4e3a\u6587\u4ef6\u548c\u6570\u636e\u7f13\u5b58\uff0c\u4ee5\u63d0\u9ad8\u7cfb\u7edf\u6027\u80fd\uff0c\u5f53\u4f60\u9700\u8981\u8fd9\u4e9b\u5185\u5b58\u65f6\uff0c\u7cfb\u7edf\u4f1a\u81ea\u52a8\u91ca\u653e\uff08\u4e0d\u50cfwindows\u90a3\u6837\uff0c\u5373\u4f7f\u4f60\u6709\u5f88\u591a\u7a7a\u95f2\u5185\u5b58,\u4ed6\u4e5f\u8981\u8bbf\u95ee\u4e00\u4e0b\u78c1\u76d8\u4e2d\u7684pagefiles\uff09<\/p>\n<h3 id=\"h3_7\">\uff084\uff09\u8fdb\u7a0b\u4fe1\u606f\u533a\uff1a<\/h3>\n<p>\u7edf\u8ba1\u4fe1\u606f\u533a\u57df\u7684\u4e0b\u65b9\u663e\u793a\u4e86\u5404\u4e2a\u8fdb\u7a0b\u7684\u8be6\u7ec6\u4fe1\u606f\u3002\u9996\u5148\u6765\u8ba4\u8bc6\u4e00\u4e0b\u5404\u5217\u7684\u542b\u4e49\u3002<\/p>\n<table class=\"ke-zeroborder\" border=\"0\" cellspacing=\"1\">\n<tbody>\n<tr>\n<td>\u5e8f\u53f7<\/td>\n<td>\u5217\u540d<\/td>\n<td>\u542b\u4e49<\/td>\n<\/tr>\n<\/tbody>\n<tbody>\n<tr>\n<td>a<\/td>\n<td>PID<\/td>\n<td>\u8fdb\u7a0bid<\/td>\n<\/tr>\n<tr>\n<td>b<\/td>\n<td>PPID<\/td>\n<td>\u7236\u8fdb\u7a0bid<\/td>\n<\/tr>\n<tr>\n<td>c<\/td>\n<td>RUSER<\/td>\n<td>Real user name<\/td>\n<\/tr>\n<tr>\n<td>d<\/td>\n<td>UID<\/td>\n<td>\u8fdb\u7a0b\u6240\u6709\u8005\u7684\u7528\u6237id<\/td>\n<\/tr>\n<tr>\n<td>e<\/td>\n<td>USER<\/td>\n<td>\u8fdb\u7a0b\u6240\u6709\u8005\u7684\u7528\u6237\u540d<\/td>\n<\/tr>\n<tr>\n<td>f<\/td>\n<td>GROUP<\/td>\n<td>\u8fdb\u7a0b\u6240\u6709\u8005\u7684\u7ec4\u540d<\/td>\n<\/tr>\n<tr>\n<td>g<\/td>\n<td>TTY<\/td>\n<td>\u542f\u52a8\u8fdb\u7a0b\u7684\u7ec8\u7aef\u540d\u3002\u4e0d\u662f\u4ece\u7ec8\u7aef\u542f\u52a8\u7684\u8fdb\u7a0b\u5219\u663e\u793a\u4e3a ?<\/td>\n<\/tr>\n<tr>\n<td>h<\/td>\n<td>PR<\/td>\n<td>\u4f18\u5148\u7ea7<\/td>\n<\/tr>\n<tr>\n<td>i<\/td>\n<td>NI<\/td>\n<td>nice\u503c\u3002\u8d1f\u503c\u8868\u793a\u9ad8\u4f18\u5148\u7ea7\uff0c\u6b63\u503c\u8868\u793a\u4f4e\u4f18\u5148\u7ea7<\/td>\n<\/tr>\n<tr>\n<td>j<\/td>\n<td>P<\/td>\n<td>\u6700\u540e\u4f7f\u7528\u7684CPU\uff0c\u4ec5\u5728\u591aCPU\u73af\u5883\u4e0b\u6709\u610f\u4e49<\/td>\n<\/tr>\n<tr>\n<td>k<\/td>\n<td>%CPU<\/td>\n<td>\u4e0a\u6b21\u66f4\u65b0\u5230\u73b0\u5728\u7684CPU\u65f6\u95f4\u5360\u7528\u767e\u5206\u6bd4<\/td>\n<\/tr>\n<tr>\n<td>l<\/td>\n<td>TIME<\/td>\n<td>\u8fdb\u7a0b\u4f7f\u7528\u7684CPU\u65f6\u95f4\u603b\u8ba1\uff0c\u5355\u4f4d\u79d2<\/td>\n<\/tr>\n<tr>\n<td>m<\/td>\n<td>TIME+<\/td>\n<td>\u8fdb\u7a0b\u4f7f\u7528\u7684CPU\u65f6\u95f4\u603b\u8ba1\uff0c\u5355\u4f4d1\/100\u79d2<\/td>\n<\/tr>\n<tr>\n<td>n<\/td>\n<td>%MEM<\/td>\n<td>\u8fdb\u7a0b\u4f7f\u7528\u7684<strong>\u7269\u7406\u5185\u5b58<\/strong>\u767e\u5206\u6bd4<\/td>\n<\/tr>\n<tr>\n<td>o<\/td>\n<td>VIRT<\/td>\n<td>\u8fdb\u7a0b\u4f7f\u7528\u7684\u865a\u62df\u5185\u5b58\u603b\u91cf\uff0c\u5355\u4f4dkb\u3002VIRT=SWAP+RES<\/td>\n<\/tr>\n<tr>\n<td>p<\/td>\n<td>SWAP<\/td>\n<td>\u8fdb\u7a0b\u4f7f\u7528\u7684\u865a\u62df\u5185\u5b58\u4e2d\uff0c\u88ab\u6362\u51fa\u7684\u5927\u5c0f\uff0c\u5355\u4f4dkb\u3002<\/td>\n<\/tr>\n<tr>\n<td>q<\/td>\n<td>RES<\/td>\n<td>\u8fdb\u7a0b\u4f7f\u7528\u7684\u3001\u672a\u88ab\u6362\u51fa\u7684\u7269\u7406\u5185\u5b58\u5927\u5c0f\uff0c\u5355\u4f4dkb\u3002RES=CODE+DATA<\/td>\n<\/tr>\n<tr>\n<td>r<\/td>\n<td>CODE<\/td>\n<td>\u53ef\u6267\u884c\u4ee3\u7801\u5360\u7528\u7684<strong>\u7269\u7406<\/strong>\u5185\u5b58\u5927\u5c0f\uff0c\u5355\u4f4dkb<\/td>\n<\/tr>\n<tr>\n<td>s<\/td>\n<td>DATA<\/td>\n<td>\u53ef\u6267\u884c\u4ee3\u7801\u4ee5\u5916\u7684\u90e8\u5206(\u6570\u636e\u6bb5+\u6808)\u5360\u7528\u7684<strong>\u7269\u7406<\/strong>\u5185\u5b58\u5927\u5c0f\uff0c\u5355\u4f4dkb<\/td>\n<\/tr>\n<tr>\n<td>t<\/td>\n<td>SHR<\/td>\n<td>\u5171\u4eab\u5185\u5b58\u5927\u5c0f\uff0c\u5355\u4f4dkb<\/td>\n<\/tr>\n<tr>\n<td>u<\/td>\n<td>nFLT<\/td>\n<td>\u9875\u9762\u9519\u8bef\u6b21\u6570<\/td>\n<\/tr>\n<tr>\n<td>v<\/td>\n<td>nDRT<\/td>\n<td>\u6700\u540e\u4e00\u6b21\u5199\u5165\u5230\u73b0\u5728\uff0c\u88ab\u4fee\u6539\u8fc7\u7684\u9875\u9762\u6570\u3002<\/td>\n<\/tr>\n<tr>\n<td>w<\/td>\n<td>S<\/td>\n<td>\u8fdb\u7a0b\u72b6\u6001\u3002<br \/>\n<strong>D<\/strong>=\u4e0d\u53ef\u4e2d\u65ad\u7684\u7761\u7720\u72b6\u6001<br \/>\n<strong>R<\/strong>=\u8fd0\u884c<br \/>\n<strong>S<\/strong>=\u7761\u7720<br \/>\n<strong>T<\/strong>=\u8ddf\u8e2a\/\u505c\u6b62<br \/>\n<strong>Z<\/strong>=\u50f5\u5c38\u8fdb\u7a0b<\/td>\n<\/tr>\n<tr>\n<td>x<\/td>\n<td>COMMAND<\/td>\n<td>\u547d\u4ee4\u540d\/\u547d\u4ee4\u884c<\/td>\n<\/tr>\n<tr>\n<td>y<\/td>\n<td>WCHAN<\/td>\n<td>\u82e5\u8be5\u8fdb\u7a0b\u5728\u7761\u7720\uff0c\u5219\u663e\u793a\u7761\u7720\u4e2d\u7684\u7cfb\u7edf\u51fd\u6570\u540d<\/td>\n<\/tr>\n<tr>\n<td>z<\/td>\n<td>Flags<\/td>\n<td>\u4efb\u52a1\u6807\u5fd7\uff0c\u53c2\u8003 sched.h<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3 id=\"h3_8\">\uff085\uff09\u67e5\u770b\u6307\u5b9a\u5217<\/h3>\n<p>\u9ed8\u8ba4\u60c5\u51b5\u4e0b\u4ec5\u663e\u793a\u6bd4\u8f83\u91cd\u8981\u7684 PID\u3001USER\u3001PR\u3001NI\u3001VIRT\u3001RES\u3001SHR\u3001S\u3001%CPU\u3001%MEM\u3001TIME+\u3001COMMAND \u5217\u3002<br \/>\n\u53ef\u4ee5\u901a\u8fc7\u4e0b\u9762\u7684\u5feb\u6377\u952e\u6765\u66f4\u6539\u663e\u793a\u5185\u5bb9\uff1a<\/p>\n<h4 id=\"h4_9\">5.1 f \u952e\u9009\u62e9\u663e\u793a\u5185\u5bb9<\/h4>\n<p>\u901a\u8fc7 f \u952e\u53ef\u4ee5\u9009\u62e9\u663e\u793a\u7684\u5185\u5bb9\u3002\u6309 f \u952e\u4e4b\u540e\u4f1a\u663e\u793a\u5217\u7684\u5217\u8868\uff0c\u6309 a-z \u5373\u53ef\u663e\u793a\u6216\u9690\u85cf\u5bf9\u5e94\u7684\u5217\uff0c\u6700\u540e\u6309\u56de\u8f66\u952e\u786e\u5b9a\u3002<\/p>\n<h4 id=\"h4_10\">5.2 o \u952e\u6539\u53d8\u663e\u793a\u987a\u5e8f<\/h4>\n<p>\u6309 o \u952e\u53ef\u4ee5\u6539\u53d8\u5217\u7684\u663e\u793a\u987a\u5e8f\u3002\u6309\u5c0f\u5199\u7684 a-z \u53ef\u4ee5\u5c06\u76f8\u5e94\u7684\u5217\u5411\u53f3\u79fb\u52a8\uff0c\u800c\u5927\u5199\u7684 A-Z \u53ef\u4ee5\u5c06\u76f8\u5e94\u7684\u5217\u5411\u5de6\u79fb\u52a8\u3002\u6700\u540e\u6309\u56de\u8f66\u952e\u786e\u5b9a\u3002<\/p>\n<h4 id=\"h4_11\">5.3 F\/O \u952e\u5c06\u8fdb\u7a0b\u6309\u5217\u6392\u5e8f<\/h4>\n<p>\u6309\u5927\u5199\u7684 F \u6216 O \u952e\uff0c\u7136\u540e\u6309 a-z \u53ef\u4ee5\u5c06\u8fdb\u7a0b\u6309\u7167\u76f8\u5e94\u7684\u5217\u8fdb\u884c\u6392\u5e8f\u3002\u800c\u5927\u5199\u7684 R \u952e\u53ef\u4ee5\u5c06\u5f53\u524d\u7684\u6392\u5e8f\u5012\u8f6c\u3002<\/p>\n<h3 id=\"h3_12\">\uff086\uff09\u5e38\u7528\u4ea4\u4e92\u547d\u4ee4<\/h3>\n<p>\u4ece\u4f7f\u7528\u89d2\u5ea6\u6765\u770b\uff0c\u719f\u7ec3\u7684\u638c\u63e1\u8fd9\u4e9b\u547d\u4ee4\u6bd4\u638c\u63e1\u9009\u9879\u8fd8\u91cd\u8981\u4e00\u4e9b\u3002\u8fd9\u4e9b\u547d\u4ee4\u90fd\u662f\u5355\u5b57\u6bcd\u7684\uff0c\u5982\u679c\u5728\u547d\u4ee4\u884c\u9009\u9879\u4e2d\u4f7f\u7528\u4e86s\u9009\u9879\uff0c\u5219\u53ef\u80fd\u5176\u4e2d\u4e00\u4e9b\u547d\u4ee4\u4f1a\u88ab\u5c4f\u853d\u6389\u3002<br \/>\nCtrl+L \u64e6\u9664\u5e76\u4e14\u91cd\u5199\u5c4f\u5e55\u3002<br \/>\nh\u6216\u8005? \u663e\u793a\u5e2e\u52a9\u753b\u9762\uff0c\u7ed9\u51fa\u4e00\u4e9b\u7b80\u77ed\u7684\u547d\u4ee4\u603b\u7ed3\u8bf4\u660e\u3002<br \/>\nk \u7ec8\u6b62\u4e00\u4e2a\u8fdb\u7a0b\u3002\u7cfb\u7edf\u5c06\u63d0\u793a\u7528\u6237\u8f93\u5165\u9700\u8981\u7ec8\u6b62\u7684\u8fdb\u7a0bPID\uff0c\u4ee5\u53ca\u9700\u8981\u53d1\u9001\u7ed9\u8be5\u8fdb\u7a0b\u4ec0\u4e48\u6837\u7684\u4fe1\u53f7\u3002\u4e00\u822c\u7684\u7ec8\u6b62\u8fdb\u7a0b\u53ef\u4ee5\u4f7f\u752815\u4fe1\u53f7\uff1b\u5982\u679c\u4e0d\u80fd\u6b63\u5e38\u7ed3\u675f\u90a3\u5c31\u4f7f\u7528\u4fe1\u53f79\u5f3a\u5236\u7ed3\u675f\u8be5\u8fdb\u7a0b\u3002\u9ed8\u8ba4\u503c\u662f\u4fe1\u53f715\u3002\u5728\u5b89\u5168\u6a21\u5f0f\u4e2d\u6b64\u547d\u4ee4\u88ab\u5c4f\u853d\u3002<br \/>\ni \u5ffd\u7565\u95f2\u7f6e\u548c\u50f5\u6b7b\u8fdb\u7a0b\u3002\u8fd9\u662f\u4e00\u4e2a\u5f00\u5173\u5f0f\u547d\u4ee4\u3002<br \/>\nq \u9000\u51fa\u7a0b\u5e8f\u3002<br \/>\nr \u91cd\u65b0\u5b89\u6392\u4e00\u4e2a\u8fdb\u7a0b\u7684\u4f18\u5148\u7ea7\u522b\u3002\u7cfb\u7edf\u63d0\u793a\u7528\u6237\u8f93\u5165\u9700\u8981\u6539\u53d8\u7684\u8fdb\u7a0bPID\u4ee5\u53ca\u9700\u8981\u8bbe\u7f6e\u7684\u8fdb\u7a0b\u4f18\u5148\u7ea7\u503c\u3002\u8f93\u5165\u4e00\u4e2a\u6b63\u503c\u5c06\u4f7f\u4f18\u5148\u7ea7\u964d\u4f4e\uff0c\u53cd\u4e4b\u5219\u53ef\u4ee5\u4f7f\u8be5\u8fdb\u7a0b\u62e5\u6709\u66f4\u9ad8\u7684\u4f18\u5148\u6743\u3002\u9ed8\u8ba4\u503c\u662f10\u3002<br \/>\nS \u5207\u6362\u5230\u7d2f\u8ba1\u6a21\u5f0f\u3002<br \/>\ns \u6539\u53d8\u4e24\u6b21\u5237\u65b0\u4e4b\u95f4\u7684\u5ef6\u8fdf\u65f6\u95f4\u3002\u7cfb\u7edf\u5c06\u63d0\u793a\u7528\u6237\u8f93\u5165\u65b0\u7684\u65f6\u95f4\uff0c\u5355\u4f4d\u4e3as\u3002\u5982\u679c\u6709\u5c0f\u6570\uff0c\u5c31\u6362\u7b97\u6210m s\u3002\u8f93\u51650\u503c\u5219\u7cfb\u7edf\u5c06\u4e0d\u65ad\u5237\u65b0\uff0c\u9ed8\u8ba4\u503c\u662f5 s\u3002\u9700\u8981\u6ce8\u610f\u7684\u662f\u5982\u679c\u8bbe\u7f6e\u592a\u5c0f\u7684\u65f6\u95f4\uff0c\u5f88\u53ef\u80fd\u4f1a\u5f15\u8d77\u4e0d\u65ad\u5237\u65b0\uff0c\u4ece\u800c\u6839\u672c\u6765\u4e0d\u53ca\u770b\u6e05\u663e\u793a\u7684\u60c5\u51b5\uff0c\u800c\u4e14\u7cfb\u7edf\u8d1f\u8f7d\u4e5f\u4f1a\u5927\u5927\u589e\u52a0\u3002<br \/>\nf\u6216\u8005F \u4ece\u5f53\u524d\u663e\u793a\u4e2d\u6dfb\u52a0\u6216\u8005\u5220\u9664\u9879\u76ee\u3002<br \/>\no\u6216\u8005O \u6539\u53d8\u663e\u793a\u9879\u76ee\u7684\u987a\u5e8f\u3002<br \/>\nl \u5207\u6362\u663e\u793a\u5e73\u5747\u8d1f\u8f7d\u548c\u542f\u52a8\u65f6\u95f4\u4fe1\u606f\u3002<br \/>\nm \u5207\u6362\u663e\u793a\u5185\u5b58\u4fe1\u606f\u3002<br \/>\nt \u5207\u6362\u663e\u793a\u8fdb\u7a0b\u548cCPU\u72b6\u6001\u4fe1\u606f\u3002<br \/>\nc \u5207\u6362\u663e\u793a\u547d\u4ee4\u540d\u79f0\u548c\u5b8c\u6574\u547d\u4ee4\u884c\u3002<br \/>\nM \u6839\u636e\u9a7b\u7559\u5185\u5b58\u5927\u5c0f\u8fdb\u884c\u6392\u5e8f\u3002<br \/>\nP \u6839\u636eCPU\u4f7f\u7528\u767e\u5206\u6bd4\u5927\u5c0f\u8fdb\u884c\u6392\u5e8f\u3002<br \/>\nT \u6839\u636e\u65f6\u95f4\/\u7d2f\u8ba1\u65f6\u95f4\u8fdb\u884c\u6392\u5e8f\u3002<br \/>\nW \u5c06\u5f53\u524d\u8bbe\u7f6e\u5199\u5165~\/.toprc\u6587\u4ef6\u4e2d\u3002\u8fd9\u662f\u5199top\u914d\u7f6e\u6587\u4ef6\u7684\u63a8\u8350\u65b9\u6cd5\u3002<\/p>\n<h3 id=\"h3_13\">\uff087\uff09\u6700\u540e\u7684\u6280\u80fd\uff1atop \u547d\u4ee4\u5c0f\u6280\u5de7<\/h3>\n<p>1\u3001\u8f93\u5165\u5927\u5199P\uff0c\u5219\u7ed3\u679c\u6309CPU\u5360\u7528\u964d\u5e8f\u6392\u5e8f\u3002<br \/>\n2\u3001\u8f93\u5165\u5927\u5199M\uff0c\u7ed3\u679c\u6309\u5185\u5b58\u5360\u7528\u964d\u5e8f\u6392\u5e8f\u3002<br \/>\n3\u3001\u6309\u6570\u5b57 1 \u5219\u53ef\u4ee5\u663e\u793a\u6240\u6709CPU\u6838\u5fc3\u7684\u8d1f\u8f7d\u60c5\u51b5\u3002<br \/>\n4\u3001top -d 5 \u00a0 \u00a0\u6bcf\u9694 5 \u79d2\u5237\u65b0\u4e00\u6b21\uff0c\u9ed8\u8ba4 1 \u79d2<br \/>\n5\u3001top -p 4360,4358 \u00a0 \u00a0\u76d1\u63a7\u6307\u5b9a\u8fdb\u7a0b<br \/>\n6\u3001top -U johndoe \u00a0 \u00a0\u2018U\u2019\u4e3a \u771f\u5b9e\/\u6709\u6548\/\u4fdd\u5b58\/\u6587\u4ef6\u7cfb\u7edf\u7528\u6237\u540d\u3002<br \/>\n7\u3001top -u 500 \u00a0 \u00a0\u2018u\u2019\u4e3a\u6709\u6548\u7528\u6237\u6807\u8bc6<br \/>\n8\u3001top -bn 1 \u00a0 \u00a0\u663e\u793a\u6240\u6709\u8fdb\u7a0b\u4fe1\u606f\uff0ctop -n 1 \u53ea\u663e\u793a\u4e00\u5c4f\u4fe1\u606f\uff0c\u4f9b\u7ba1\u9053\u8c03\u7528<br \/>\n9\u3001top -M \u00a0 #show memory summary in megabytes not kilobytes<br \/>\n10\u3001top -p 25097 -n 1 -b \u00a0 \u00a0# -b \u907f\u514d\u8f93\u51fa\u63a7\u5236\u5b57\u7b26\uff0c\u7ba1\u9053\u8c03\u7528\u51fa\u73b0\u4e71\u7801<br \/>\n11\u3001top\u7ffb\u9875\uff1atop -bn1 | less<br \/>\n12\u3001\u589e\u5f3a\u7248\u7684 top\uff1ahtop \uff0c\u4e00\u4e2a\u66f4\u52a0\u5f3a\u5927\u7684\u4ea4\u4e92\u5f0f\u8fdb\u7a0b\u7ba1\u7406\u5668\uff1a<\/p>\n<p><img src=\"http:\/\/static.oschina.net\/uploads\/img\/201308\/30011235_4Xjn.png\" alt=\"File:Htop.png\" \/><\/p>\n<h3 id=\"h3_14\">\u9644\uff1a\u8fdb\u7a0b\u76f8\u5173\u57fa\u7840\u77e5\u8bc6<\/h3>\n<h3 id=\"h3_15\"><img src=\"https:\/\/static.oschina.net\/uploads\/img\/201612\/02220852_vFVz.png\" title=\"\" alt=\"\" \/><\/h3>\n<p><strong>\u5185\u5b58<\/strong><\/p>\n<p class=\"x_MsoNormal\"><strong>\u5185\u5b58\u57fa\u7840<\/strong><\/p>\n<p class=\"x_MsoNormal\">\u901a\u5e38\u5305\u542b\u7269\u7406\u5185\u5b58\u548c\u865a\u62df\u5185\u5b58\uff08virtual Memory\u00a0\uff09\uff0c\u597d\u5904\u662f\u901a\u8fc7\u7269\u7406\u5185\u5b58\uff08RAM)\u00a0\u548c\u90e8\u5206\u786c\u76d8\u7a7a\u95f4\uff08SWAP\u00a0\uff09\u7ec4\u5408\u589e\u5927\u4e86\u603b\u4f53\u7684\u5185\u5b58\u7a7a\u95f4\uff0c\u574f\u5904\u662f\u7531\u4e8e\u786c\u76d8\u90e8\u5206\u7684\u865a\u62df\u5185\u5b58\u7684\u6027\u80fd\u6709\u9650\uff0c\u5e76\u4e14RAM\u00a0\u548cSWAP\u4e4b\u95f4\u4ea4\u6362\u589e\u52a0\u4e86\u7cfb\u7edf\u7684\u8d1f\u62c5\u3002<strong>\u00a0<\/strong><\/p>\n<div>\n<p class=\"x_MsoNormal\">1.\u00a0\u00a0[phoenix.lif@aliadmin036158\u00a0~]$\u00a0free<\/p>\n<p class=\"x_MsoNormal\">2.\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0total\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0used\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0free\u00a0\u00a0\u00a0\u00a0\u00a0shared\u00a0\u00a0\u00a0\u00a0buffers\u00a0\u00a0\u00a0\u00a0\u00a0cached<\/p>\n<p class=\"x_MsoNormal\">3.\u00a0\u00a0Mem:\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a07680000\u00a0\u00a0\u00a0\u00a0\u00a0\u00a07504764\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0175236\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a00\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0490772\u00a0\u00a0\u00a0\u00a0\u00a0\u00a03193856<\/p>\n<p class=\"x_MsoNormal\">4.\u00a0\u00a0-\/+\u00a0buffers\/cache:\u00a0\u00a0\u00a0\u00a0\u00a03820136\u00a0\u00a0\u00a0\u00a0\u00a0\u00a03859864<\/p>\n<p class=\"x_MsoNormal\">5.\u00a0\u00a0Swap:\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a02096472\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a088\u00a0\u00a0\u00a0\u00a0\u00a0\u00a02096384<\/p>\n<\/div>\n<p class=\"x_MsoNormal\">\u5176\u4e2d\uff0c<strong>Mem\u00a0\uff1a\u00a0\u00a0<\/strong><\/p>\n<p class=\"x_MsoNormal\">(1) Total\u00a0\u4e3a\u603b\u7684\u7269\u7406\u5185\u5b58\uff1b<\/p>\n<p class=\"x_MsoNormal\">(2) Used\u00a0\u8868\u793a\u603b\u8ba1\u5206\u914d\u7ed9\u7f13\u5b58\u4f7f\u7528\u7684\u6570\u91cf\uff08\u5373buffers\u00a0\u548ccache\u00a0\uff0c\u4f46\u53ef\u80fd\u90e8\u5206\u8fd8\u672a\u5b9e\u9645\u4f7f\u7528\uff09\uff1b<\/p>\n<p class=\"x_MsoNormal\">(3)Free\u00a0\u8868\u793a\u672a\u88ab\u5206\u914d\u7684\u5185\u5b58\uff1b<\/p>\n<p class=\"x_MsoNormal\">(4)share\u00a0\u8868\u793a\u5171\u4eab\u5185\u5b58\uff0c\u4e00\u822c\u4e0d\u4f1a\u4f7f\u7528\uff1b<\/p>\n<p class=\"x_MsoNormal\">(5)buffers\u00a0\uff1a\u8868\u793a\u7cfb\u7edf\u5206\u914d\u4f46\u672a\u88ab\u4f7f\u7528\u7684buffers\u00a0\u6570\u91cf\uff1b<\/p>\n<p class=\"x_MsoNormal\">(6)Cached\u00a0\uff1a\u8868\u793a\u7cfb\u7edf\u5206\u914d\u4f46\u672a\u88ab\u4f7f\u7528\u7684cache\u00a0\u6570\u91cf\u3002\u540e\u9762\u8be6\u7ec6\u8bf4\u660ebuffer\u00a0\u548ccache\u00a0\u7684\u533a\u522b\u3002<\/p>\n<p class=\"x_MsoNormal\"><strong>-\/+ buffers\/cache:<\/strong><\/p>\n<p class=\"x_MsoNormal\">(1)Used\u00a0\u8868\u793a\u5b9e\u9645\u4f7f\u7528\u7684buffers\u00a0\u548ccache\u00a0\u603b\u91cf\uff0c\u5373\u5b9e\u9645\u4f7f\u7528\u5185\u5b58\u603b\u91cf;<\/p>\n<p class=\"x_MsoNormal\">(2)Free\u00a0\u672a\u88ab\u4f7f\u7528\u7684buffer\u00a0\uff0ccache\u00a0\u53ca\u672a\u88ab\u5206\u914d\u7684\u5185\u5b58\u4e4b\u548c\uff0c\u5373\u7cfb\u7edf\u53ef\u7528\u5185\u5b58\u3002<\/p>\n<p class=\"x_MsoNormal\"><strong>Swap:\u00a0\u00a0<\/strong>\u865a\u62df\u5185\u5b58\u3002\u5982\u679c\u7cfb\u7edf\u7269\u7406\u5185\u5b58\u7528\u5b8c\u4e86\uff0c\u4f46\u662f\u4ecd\u6709\u865a\u62df\u5185\u5b58\u7cfb\u7edf\u4ecd\u7136\u53ef\u4ee5\u8fd0\u884c\u867d\u7136\u8fd0\u884c\u5f88\u6162\uff1b\u4f46\u662f\u5982\u679cSwap\u00a0\u4e5f\u7528\u5b8c\u4e86\uff0c\u7cfb\u7edf\u5c31\u4f1a\u53d1\u751f\u9519\u8bef\uff0c\u901a\u5e38\u4f1a\u51fa\u73b0&#8221;application is out of memory&#8221;\u00a0\u7684\u9519\u8bef\uff0c\u4e25\u91cd\u65f6\u9020\u6210\u7cfb\u7edf\u6b7b\u9501\u3002\u901a\u5e38Swap\u00a0\u7a7a\u95f4\u5206\u914d\u4e3a\u7269\u7406\u5185\u5b58\u76842-2.5\u00a0\u500d\uff0c\u4f46\u4e5f\u4e0d\u7528\u5b8c\u5168\u6309\u7167\u8fd9\u4e2a\u6807\u51c6\uff0c\u5982\u786e\u5b9a\u5185\u5b58\u5b8c\u5168\u591f\u7528\u4e5f\u6ca1\u5fc5\u8981\u5206\u914d\u592a\u591a\uff0c\u6211\u4eec\u7ebf\u4e0a\u7684\u670d\u52a1\u5668\u5c31\u6ca1\u6709\u5206\u914d\u592a\u591a\u7684Swap\u00a0\u7a7a\u95f4\u3002<\/p>\n<p class=\"x_MsoNormal\"><strong>tips:<\/strong><\/p>\n<p class=\"x_MsoNormal\">\u5b9e\u9645\u53ef\u7528\u5185\u5b58\uff1aFree(-\/+ buffers\/cache) = Free(Mem)+buffers(Mem)+Cached(Mem);<\/p>\n<p class=\"x_MsoNormal\">\u5df2\u5206\u914d\u5185\u5b58\uff1aUsed(Mem) = Used(-\/+ buffers\/cache)+ buffers(Mem) + Cached(Mem)<\/p>\n<p class=\"x_MsoNormal\">\u7269\u7406\u5185\u5b58\u603b\u5927\u5c0f\uff1atotal\u00a0\uff08Mem\u00a0\uff09\u00a0= used(-\/+ buffers\/cache) + free(-\/+ buffers\/cache)<\/p>\n<p class=\"x_MsoNormal\"><strong>Buffers &amp; Cache<\/strong><\/p>\n<p class=\"x_MsoNormal\">\u5728\u00a0Linux\u00a0\u7684\u5b9e\u73b0\u4e2d\uff0c\u6587\u4ef6\u00a0Cache\u00a0\u5206\u4e3a\u4e24\u4e2a\u5c42\u9762\uff0c\u4e00\u662f\u00a0Page Cache\u00a0\uff0c\u53e6\u4e00\u4e2a\u00a0Buffer Cache\u00a0\uff0c\u6bcf\u4e00\u4e2aPage Cache\u00a0\u5305\u542b\u82e5\u5e72\u00a0Buffer Cache\u00a0\u3002\u5185\u5b58\u7ba1\u7406\u7cfb\u7edf\u548c\u00a0VFS\u00a0\u53ea\u4e0e\u00a0Page Cache\u00a0\u4ea4\u4e92\uff0c\u5185\u5b58\u7ba1\u7406\u7cfb\u7edf\u8d1f\u8d23\u7ef4\u62a4\u6bcf\u9879\u00a0Page Cache\u00a0\u7684\u5206\u914d\u548c\u56de\u6536\u3002buffer cache\u00a0\u662f\u5757\u8bbe\u5907\u7684\u8bfb\u5199\u7f13\u51b2\u533a\uff0c\u66f4\u9760\u8fd1\u5b58\u50a8\u8bbe\u5907\uff0c\u6216\u8005\u76f4\u63a5\u5c31\u662fdisk\u00a0\u7684\u7f13\u51b2\u533a\u3002<\/p>\n<p class=\"x_MsoNormal\">\u78c1\u76d8\u64cd\u4f5c\u6709\u903b\u8f91\u7ea7\uff08\u6587\u4ef6\u7cfb\u7edf\uff09\u548c\u7269\u7406\u7ea7\uff08\u78c1\u76d8\u5757\uff09\uff0c\u8fd9\u4e24\u79cd\u7f13\u5b58\u5206\u522b\u662f\u7f13\u5b58\u903b\u8f91\u548c\u7269\u7406\u7ea7\u6570\u636e\u7684\u3002\u5982\u6211\u4eec\u8fdb\u884c\u7684\u662f\u6587\u4ef6\u7cfb\u7edf\u64cd\u4f5c\uff0c\u90a3\u4e48\u6587\u4ef6\u88ab\u7f13\u5b58\u5230Page Cache\u00a0\uff0c\u5982\u9700\u8981\u5237\u65b0\u6587\u4ef6\u7684\u65f6\u5019\uff0cPage Cache\u00a0\u5c06\u4ea4\u7ed9Buffer Cache\u00a0\u53bb\u5b8c\u6210\uff0c\u56e0\u4e3aBuffer Cache\u00a0\u662f\u7f13\u5b58\u78c1\u76d8\u5757\u7684\u3002\u5373\u76f4\u63a5\u53bb\u64cd\u4f5c\u6587\u4ef6\u5c31\u662f\u4f7f\u7528Page Cache\u00a0\uff0c\u7528dd\u00a0\u7b49\u547d\u4ee4\u76f4\u63a5\u64cd\u4f5c\u78c1\u76d8\u5757\uff0c\u5c31\u662fbuffer cache\u00a0\u7f13\u5b58\u3002<\/p>\n<h3 id=\"h3_16\">\uff088\uff09Refer\uff1a<\/h3>\n<p><a href=\"http:\/\/www.linuxidc.com\/Linux\/2011-03\/33582.htm\" target=\"_blank\" rel=\"nofollow noopener noreferrer\">http:\/\/www.linuxidc.com\/Linux\/2011-03\/33582.htm<\/a><\/p>\n<p><a href=\"http:\/\/os.51cto.com\/art\/201012\/240719.htm\" target=\"_blank\" rel=\"nofollow noopener noreferrer\">http:\/\/os.51cto.com\/art\/201012\/240719.htm<\/a><\/p>\n<p><a href=\"http:\/\/www.kernelhardware.org\/linux-top-command\/\" target=\"_blank\" rel=\"nofollow noopener noreferrer\">http:\/\/www.kernelhardware.org\/linux-top-command\/<\/a><\/p>\n<p><a href=\"http:\/\/unix.stackexchange.com\/questions\/18918\/in-linux-top-command-what-are-us-sy-ni-id-wa-hi-si-and-st-for-cpu-usage\" target=\"_blank\" rel=\"nofollow noopener noreferrer\">http:\/\/unix.stackexchange.com\/questions\/18918\/in-linux-top-command-what-are-us-sy-ni-id-wa-hi-si-and-st-for-cpu-usage<\/a><\/p>\n<p><a href=\"http:\/\/www.ruanyifeng.com\/blog\/2011\/07\/linux_load_average_explained.html\" target=\"_blank\" rel=\"nofollow noopener noreferrer\">http:\/\/www.ruanyifeng.com\/blog\/2011\/07\/linux_load_average_explained.html<\/a><\/p>\n<p><a href=\"http:\/\/www.taobaotest.com\/blogs\/qa?bid=2265\" target=\"_blank\" rel=\"nofollow noopener noreferrer\">http:\/\/www.taobaotest.com\/blogs\/qa?bid=2265<\/a>\u00a0 \u00a0\u00a0linux\u547d\u4ee4free\u8be6\u89e3<\/p>\n<p><a href=\"http:\/\/blogread.cn\/it\/article\/6386?f=wb\" target=\"_blank\" rel=\"nofollow noopener noreferrer\">http:\/\/blogread.cn\/it\/article\/6386?f=wb<\/a>\u00a0 \u00a0\u00a0top\u4f7f\u7528\u6280\u5de7<\/p>\n<p><a href=\"http:\/\/yikebocai.com\/2014\/11\/cpu-load-too-high\/\" target=\"_blank\" rel=\"nofollow noopener noreferrer\">http:\/\/yikebocai.com\/2014\/11\/cpu-load-too-high\/<\/a>\u00a0 \u00a0\u00a0CPU Load\u8fc7\u9ad8\u95ee\u9898\u5206\u6790\u548c\u89e3\u51b3\u65b9\u6848<\/p>\n<p><a href=\"https:\/\/github.com\/oldratlee\/useful-.s\" target=\"_blank\" rel=\"nofollow noopener noreferrer\">https:\/\/github.com\/oldratlee\/useful-scripts<\/a>\u00a0\u00a0 \u00a0useful-scripts\uff1a\u6253\u5370 java \u5360\u7528\u8d44\u6e90\u9ad8\u7684\u7ebf\u7a0b<\/p>\n<p><a href=\"http:\/\/newslxw.iteye.com\/blog\/1495565\" target=\"_blank\" rel=\"nofollow noopener noreferrer\">http:\/\/newslxw.iteye.com\/blog\/1495565<\/a>\u00a0\u00a0 \u00a0\u4e00\u7bc7\u5f88\u597d\u7684linux\u4e0b\u5185\u5b58\uff0cIO\u89e3\u6790\u6587\u7ae0<\/p>\n<p><a href=\"http:\/\/alanwu.blog.51cto.com\/3652632\/1122077\" target=\"_blank\" rel=\"nofollow noopener noreferrer\">http:\/\/alanwu.blog.51cto.com\/3652632\/1122077<\/a>\u00a0\u00a0 \u00a0Buffer cache\u548cpage cache\u7684\u533a\u522b<\/p>\n<p><a href=\"http:\/\/www.penglixun.com\/tech\/system\/the_diffrents_of_page_cache_and_buffer_cache.html\" target=\"_blank\" rel=\"nofollow noopener noreferrer\">http:\/\/www.penglixun.com\/tech\/system\/the_diffrents_of_page_cache_and_buffer_cache.html<\/a>\u00a0 \u00a0 Page Cache\u548cBuffer Cache\u7684\u533a\u522b<\/p>\n<p><a href=\"http:\/\/csrd.aliapp.com\/?p=13\" target=\"_blank\" rel=\"nofollow noopener noreferrer\">http:\/\/csrd.aliapp.com\/?p=13<\/a>\u00a0 \u00a0 The Page Cache FAQ(v0.1,\u6b22\u8fce\u8865\u5145\u4e0e\u62cd\u7816)<\/p>\n<p><a href=\"http:\/\/www.techug.com\/4-process-manage-tools\" target=\"_blank\" rel=\"nofollow noopener noreferrer\">http:\/\/www.techug.com\/4-process-manage-tools<\/a>\u00a0 \u00a0 Linux \u8fdb\u7a0b\u7ba1\u7406\u4e4b\u56db\u5927\u540d\u6355<\/p>\n<p>\u8f6c\u81ea\uff1ahttp:\/\/blog.chinaunix.net\/uid-25776631-id-5784283.html<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a5\u89e6 linux \u7684\u4eba\u5bf9\u4e8e top \u547d\u4ee4\u53ef\u80fd\u4e0d\u4f1a\u964c\u751f\uff08\u4e0d\u540c\u7cfb\u7edf\u540d\u5b57\u53ef\u80fd\u4e0d\u4e00\u6837\uff0c\u5982 IBM \u7684 aix \u4e2d\u53eb t &hellip; <a href=\"https:\/\/www.llku.com\/?p=1614\" class=\"more-link\">\u7ee7\u7eed\u9605\u8bfb<span class=\"screen-reader-text\">TOP\u547d\u4ee4\u53caFree\u8bed\u4e49\u5206\u6790\uff08\u8f6c\u8f7d\uff09<\/span> <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[68],"tags":[],"_links":{"self":[{"href":"https:\/\/www.llku.com\/index.php?rest_route=\/wp\/v2\/posts\/1614"}],"collection":[{"href":"https:\/\/www.llku.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.llku.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.llku.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.llku.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1614"}],"version-history":[{"count":2,"href":"https:\/\/www.llku.com\/index.php?rest_route=\/wp\/v2\/posts\/1614\/revisions"}],"predecessor-version":[{"id":1616,"href":"https:\/\/www.llku.com\/index.php?rest_route=\/wp\/v2\/posts\/1614\/revisions\/1616"}],"wp:attachment":[{"href":"https:\/\/www.llku.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1614"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.llku.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1614"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.llku.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1614"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}