{"id":23653,"date":"2025-04-19T08:22:51","date_gmt":"2025-04-19T00:22:51","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/23653.html"},"modified":"2025-04-19T08:22:51","modified_gmt":"2025-04-19T00:22:51","slug":"jvm-49-linux-%e6%9c%8d%e5%8a%a1%e5%99%a8-cpu-%e4%bd%bf%e7%94%a8%e7%8e%87%e5%8d%87%e9%ab%98%e5%ba%94%e8%af%a5%e5%a6%82%e4%bd%95%e6%8e%92%e6%9f%a5%e5%88%86%e6%9e%90%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/23653.html","title":{"rendered":"jvm-49-linux \u670d\u52a1\u5668 cpu \u4f7f\u7528\u7387\u5347\u9ad8\u5e94\u8be5\u5982\u4f55\u6392\u67e5\u5206\u6790\uff1f"},"content":{"rendered":"<h2 id=\"\u62d3\u5c55\u9605\u8bfb\">\u62d3\u5c55\u9605\u8bfb<\/h2>\n<p>JVM FULL GC \u751f\u4ea7\u95ee\u9898 I-\u591a\u7ebf\u7a0b\u901a\u7528\u5b9e\u73b0<\/p>\n<p>JVM FULL GC \u751f\u4ea7\u95ee\u9898 II-\u5982\u4f55\u5b9a\u4f4d\u5185\u5b58\u6cc4\u9732&#xff1f; \u7ebf\u7a0b\u901a\u7528\u5b9e\u73b0<\/p>\n<p>JVM FULL GC \u751f\u4ea7\u95ee\u9898 III-\u591a\u7ebf\u7a0b\u6267\u884c\u961f\u5217\u7684\u5c01\u88c5\u5b9e\u73b0&#xff0c;\u8fdb\u4e00\u6b65\u62bd\u8c61<\/p>\n<p>jvisualvm java \u6027\u80fd\u5206\u6790\u5de5\u5177<\/p>\n<p>jvm-44-jvm \u5185\u5b58\u6027\u80fd\u5206\u6790\u5de5\u5177 Eclipse Memory Analyzer Tool (MAT) \/ \u5185\u5b58\u5206\u6790\u5668 (MAT)<\/p>\n<p>jvm-45-jvm dump \u6587\u4ef6\u5185\u5b58\u4ecb\u7ecd&#043;\u83b7\u53d6\u65b9\u5f0f&#043;\u5806\u5185\u5b58\u53ef\u89c6\u5206\u6790\u5316\u5de5\u5177<\/p>\n<p>jvm-46-jvm Thread Dump \u7ebf\u7a0b\u7684\u5806\u6808\u8ddf\u8e2a\u4fe1\u606f&#043;\u83b7\u53d6\u65b9\u5f0f&#043;\u53ef\u89c6\u5206\u6790\u5316\u5de5\u5177 FastThread<\/p>\n<p>jvm-47-jvm GC \u65e5\u5fd7\u83b7\u53d6\u65b9\u5f0f&#043;\u53ef\u89c6\u5206\u6790\u5316\u5de5\u5177 GcViewer<\/p>\n<p>jvm-48-java \u53d8\u66f4\u5bfc\u81f4\u538b\u6d4b\u5e94\u7528\u6027\u80fd\u4e0b\u964d&#xff0c;\u5982\u4f55\u5206\u6790\u5b9a\u4f4d\u539f\u56e0&#xff1f;<\/p>\n<p>jvm-49-linux \u670d\u52a1\u5668 cpu \u4f7f\u7528\u7387\u5347\u9ad8\u5e94\u8be5\u5982\u4f55\u6392\u67e5\u5206\u6790&#xff1f;<\/p>\n<h2 id=\"\u524d\u8a00\">\u524d\u8a00<\/h2>\n<p>\u5927\u5bb6\u597d&#xff0c;\u6211\u662f\u8001\u9a6c\u3002<\/p>\n<p>\u6709\u65f6\u5019\u6211\u4eec\u76d1\u63a7\u4e86\u5e94\u7528\u7684 cpu \u4f7f\u7528\u7387&#xff0c;\u8fc7\u9ad8\u7684\u65f6\u5019\u9700\u8981\u5206\u6790\u6392\u67e5&#xff0c;\u90a3\u4e48\u4e00\u822c\u7684\u5206\u6790\u6d41\u7a0b\u5e94\u8be5\u662f\u4ec0\u4e48\u6837\u7684&#xff1f;<\/p>\n<h2 id=\"\u5e94\u7528\u65b9\u9762\">\u5e94\u7528\u65b9\u9762<\/h2>\n<p>\u6211\u4eec\u9996\u5148\u8981\u770b\u4e00\u4e0b\u5e94\u7528\u5c42\u9762\u662f\u5426\u6700\u8fd1\u53d1\u751f\u8fc7\u53d8\u66f4&#xff0c;\u6bd4\u5982\u914d\u7f6e\u53d8\u66f4&#043;\u5e94\u7528\u53d1\u5e03\u3002<\/p>\n<p>\u6216\u8005\u662f\u5b58\u5728\u5b9a\u65f6\u7684\u8dd1\u6279\u7b49\u3002<\/p>\n<p>\u5982\u679c\u662f\u5468\u671f\u6027\u7684&#xff0c;\u53ef\u4ee5\u8003\u8651\u5ffd\u7565&#xff0c;\u6216\u8005\u8c03\u6574\u5bf9\u5e94\u62a5\u8b66\u7684\u9608\u503c\u3002<\/p>\n<h3 id=\"\u4e1a\u52a1\u6d41\u91cf\">\u4e1a\u52a1\u6d41\u91cf<\/h3>\n<p>\u53ef\u80fd\u5b58\u5728\u4e00\u4e9b\u7279\u522b\u5927\u7684\u4efb\u52a1\u5904\u7406\/\u67e5\u8be2\u4e4b\u7c7b\u7684&#xff0c;\u53ef\u4ee5\u901a\u8fc7\u5e94\u7528\u65e5\u5fd7\u786e\u8ba4\u3002<\/p>\n<p>\u53ef\u80fd\u5e94\u7528\u4e1a\u52a1\u91cf\u98d9\u5347&#xff0c;\u9996\u5148\u770b\u8bf7\u6c42\u7f51\u7edc\u6d41\u91cf\/CAT\u8bf7\u6c42\u7edf\u8ba1\u662f\u5426\u5347\u9ad8&#xff1b;<\/p>\n<p>\u6216\u8005\u5e94\u7528\u672c\u8eab\u7684\u670d\u52a1\u662f\u5426\u6b63\u5e38&#xff0c;\u5bfc\u81f4\u6bcf\u4e00\u53f0\u7684\u5904\u7406\u538b\u529b\u4e0a\u5347&#xff1f;<\/p>\n<h2 id=\"linux-\u673a\u5668\u65b9\u9762\">linux \u673a\u5668\u65b9\u9762<\/h2>\n<p>\u5f53 Linux \u670d\u52a1\u5668\u7684 CPU \u4f7f\u7528\u7387\u5347\u9ad8\u65f6&#xff0c;\u53ef\u80fd\u6709\u591a\u79cd\u539f\u56e0&#xff0c;\u6392\u67e5\u95ee\u9898\u9700\u8981\u7cfb\u7edf\u5730\u5206\u6790\u3002<\/p>\n<p>\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u89c1\u7684\u6392\u67e5\u6b65\u9aa4&#xff1a;<\/p>\n<h3 id=\"1-\u68c0\u67e5\u6574\u4f53-cpu-\u4f7f\u7528\u60c5\u51b5\">1. \u68c0\u67e5\u6574\u4f53 CPU \u4f7f\u7528\u60c5\u51b5<\/h3>\n<p>\u9996\u5148&#xff0c;\u4f60\u53ef\u4ee5\u4f7f\u7528\u4e00\u4e9b\u5e38\u7528\u7684\u547d\u4ee4\u67e5\u770b\u7cfb\u7edf\u6574\u4f53\u7684 CPU \u4f7f\u7528\u7387&#xff1a;<\/p>\n<ul>\n<li>top&#xff1a;\u67e5\u770b\u5b9e\u65f6\u7684\u7cfb\u7edf\u8d44\u6e90\u4f7f\u7528\u60c5\u51b5\u3002\n<ul>\n<li>\u6309 1 \u952e\u67e5\u770b\u6bcf\u4e2a CPU \u6838\u5fc3\u7684\u4f7f\u7528\u60c5\u51b5\u3002<\/li>\n<\/ul>\n<\/li>\n<li>htop&#xff1a;\u7c7b\u4f3c\u4e8e top&#xff0c;\u4f46\u662f\u63d0\u4f9b\u4e86\u66f4\u53cb\u597d\u7684\u754c\u9762&#xff0c;\u80fd\u663e\u793a\u66f4\u591a\u7684\u4fe1\u606f&#xff08;\u5982\u679c\u672a\u5b89\u88c5&#xff0c;\u53ef\u4ee5\u4f7f\u7528 sudo apt install htop \u5b89\u88c5&#xff09;\u3002<\/li>\n<li>uptime \u6216 w&#xff1a;\u67e5\u770b\u7cfb\u7edf\u8d1f\u8f7d&#xff08;1\u30015\u300115 \u5206\u949f\u7684\u5e73\u5747\u8d1f\u8f7d&#xff09;\u3002<\/li>\n<\/ul>\n<h3 id=\"top-\u6548\u679c\">top \u6548\u679c<\/h3>\n<p>\u6211\u4eec\u4ee5 WSL \u4e3a\u4f8b<\/p>\n<p>linux top \u4ecb\u7ecd <\/p>\n<p>$ top<br \/>\ntop &#8211; 17:37:38 up 6 min,  1 user,  load average: 0.04, 0.13, 0.08<br \/>\nTasks:  38 total,   1 running,  37 sleeping,   0 stopped,   0 zombie<br \/>\n%Cpu(s):  0.1 us,  0.1 sy,  0.0 ni, 99.8 id,  0.0 wa,  0.0 hi,  0.0 si,  0.0 st<br \/>\nMiB Mem :  15962.4 total,  14373.8 free,    932.2 used,    656.4 buff\/cache<br \/>\nMiB Swap:   4096.0 total,   4096.0 free,      0.0 used.  14765.8 avail Mem<\/p>\n<p>    PID USER      PR  NI    VIRT    RES    SHR S  %CPU  %MEM     TIME&#043; COMMAND<br \/>\n      1 root      20   0  167068  12564   8220 S   2.0   0.1   0:06.03 systemd<br \/>\n    325 mysql     20   0 2308084 403664  35500 S   1.0   2.5   0:02.99 mysqld<br \/>\n    611 root      20   0   43372  36876  10276 S   0.7   0.2   0:03.56 python3<br \/>\n    497 root      20   0  154392  69488  18200 S   0.3   0.4   0:03.83 python3.10<br \/>\n      2 root      20   0    2616   1444   1320 S   0.0   0.0   0:00.00 init-systemd(Ub<br \/>\n      9 root      20   0    2616      4      0 S   0.0   0.0   0:00.00 init<br \/>\n     44 root      19  -1   47836  15480  14396 S   0.0   0.1   0:00.13 systemd-journal<br \/>\n     69 root      20   0   22224   6104   4560 S   0.0   0.0   0:00.24 systemd-udevd<br \/>\n     88 root      20   0    4496    204     56 S   0.0   0.0   0:00.00 snapfuse<br \/>\n     94 root      20   0    4628    176     24 S   0.0   0.0   0:00.00 snapfuse <\/p>\n<h4 id=\"\u5177\u4f53-cpu-\u6548\u679c\">\u5177\u4f53 cpu \u6548\u679c<\/h4>\n<p>\u6309\u4e0b 1<\/p>\n<p>$ top<br \/>\ntop &#8211; 17:59:36 up 28 min,  1 user,  load average: 0.05, 0.05, 0.06<br \/>\nTasks:  39 total,   1 running,  36 sleeping,   2 stopped,   0 zombie<br \/>\n%Cpu0  :  0.0 us,  0.0 sy,  0.0 ni,100.0 id,  0.0 wa,  0.0 hi,  0.0 si,  0.0 st<br \/>\n%Cpu1  :  0.0 us,  0.0 sy,  0.0 ni,100.0 id,  0.0 wa,  0.0 hi,  0.0 si,  0.0 st<br \/>\n%Cpu2  :  0.0 us,  0.0 sy,  0.0 ni,100.0 id,  0.0 wa,  0.0 hi,  0.0 si,  0.0 st<br \/>\n%Cpu3  :  0.0 us,  0.0 sy,  0.0 ni,100.0 id,  0.0 wa,  0.0 hi,  0.0 si,  0.0 st<br \/>\n%Cpu4  :  0.0 us,  0.3 sy,  0.0 ni, 99.7 id,  0.0 wa,  0.0 hi,  0.0 si,  0.0 st<br \/>\n%Cpu5  :  0.0 us,  0.0 sy,  0.0 ni,100.0 id,  0.0 wa,  0.0 hi,  0.0 si,  0.0 st<br \/>\n%Cpu6  :  0.0 us,  1.0 sy,  0.0 ni, 99.0 id,  0.0 wa,  0.0 hi,  0.0 si,  0.0 st<br \/>\n%Cpu7  :  0.0 us,  0.0 sy,  0.0 ni,100.0 id,  0.0 wa,  0.0 hi,  0.0 si,  0.0 st<br \/>\n%Cpu8  :  0.0 us,  0.0 sy,  0.0 ni,100.0 id,  0.0 wa,  0.0 hi,  0.0 si,  0.0 st<br \/>\n%Cpu9  :  0.0 us,  0.0 sy,  0.0 ni,100.0 id,  0.0 wa,  0.0 hi,  0.0 si,  0.0 st<br \/>\n%Cpu10 :  0.0 us,  0.0 sy,  0.0 ni,100.0 id,  0.0 wa,  0.0 hi,  0.0 si,  0.0 st<br \/>\n%Cpu11 :  1.7 us,  0.0 sy,  0.0 ni, 98.3 id,  0.0 wa,  0.0 hi,  0.0 si,  0.0 st<br \/>\n%Cpu12 :  1.0 us,  0.3 sy,  0.0 ni, 98.7 id,  0.0 wa,  0.0 hi,  0.0 si,  0.0 st<br \/>\n%Cpu13 :  0.0 us,  0.0 sy,  0.0 ni,100.0 id,  0.0 wa,  0.0 hi,  0.0 si,  0.0 st<br \/>\n%Cpu14 :  0.3 us,  2.0 sy,  0.0 ni, 97.7 id,  0.0 wa,  0.0 hi,  0.0 si,  0.0 st<br \/>\n%Cpu15 :  0.0 us,  0.0 sy,  0.0 ni,100.0 id,  0.0 wa,  0.0 hi,  0.0 si,  0.0 st<br \/>\n%Cpu16 :  0.0 us,  0.0 sy,  0.0 ni,100.0 id,  0.0 wa,  0.0 hi,  0.0 si,  0.0 st<br \/>\n%Cpu17 :  0.0 us,  0.0 sy,  0.0 ni,100.0 id,  0.0 wa,  0.0 hi,  0.0 si,  0.0 st<br \/>\n%Cpu18 :  0.0 us,  0.3 sy,  0.0 ni, 99.7 id,  0.0 wa,  0.0 hi,  0.0 si,  0.0 st<br \/>\n%Cpu19 :  0.0 us,  0.0 sy,  0.0 ni,100.0 id,  0.0 wa,  0.0 hi,  0.0 si,  0.0 st<br \/>\nMiB Mem :  15962.4 total,  14659.2 free,    963.8 used,    339.3 buff\/cache<br \/>\nMiB Swap:   4096.0 total,   4096.0 free,      0.0 used.  14735.0 avail Mem <\/p>\n<h3 id=\"\u6309\u7167-cpu-\u6392\u5e8f\">\u6309\u7167 %CPU% \u6392\u5e8f<\/h3>\n<p>\u5728 top \u754c\u9762\u4e2d&#xff0c;\u6309 P \u952e&#xff08;\u5927\u5199\u7684 P&#xff09;\u6765\u6309 CPU \u4f7f\u7528\u7387\u6392\u5e8f\u3002<\/p>\n<p>\u9ed8\u8ba4\u60c5\u51b5\u4e0b&#xff0c;top \u662f\u6309\u7167\u8fdb\u7a0b ID \u6392\u5e8f\u7684&#xff0c;\u901a\u8fc7\u6309 P \u952e&#xff0c;\u4f60\u53ef\u4ee5\u5207\u6362\u5230\u6309\u7167 CPU \u4f7f\u7528\u7387&#xff08;%CPU&#xff09;\u6392\u5e8f\u3002<\/p>\n<ul>\n<li>\n<p>\u6309 P \u952e\u540e&#xff0c;\u8fdb\u7a0b\u4f1a\u6309\u7167 %CPU \u7531\u9ad8\u5230\u4f4e\u8fdb\u884c\u6392\u5e8f&#xff0c;\u8fdb\u7a0b\u4f7f\u7528 CPU \u7684\u767e\u5206\u6bd4\u4f1a\u663e\u793a\u5728 %CPU \u5217\u4e2d\u3002<\/p>\n<\/li>\n<li>\n<p>\u6309 q \u952e\u9000\u51fa top \u547d\u4ee4\u7684\u4ea4\u4e92\u754c\u9762\u3002<\/p>\n<\/li>\n<\/ul>\n<p>\u6548\u679c&#xff1a;<\/p>\n<p>PID USER      PR  NI    VIRT    RES    SHR S  %CPU  %MEM     TIME&#043; COMMAND<br \/>\n      1 root      20   0  167068  12568   8220 S   2.0   0.1   0:29.47 systemd<br \/>\n    325 mysql     20   0 2308084 421892  35500 S   1.0   2.6   0:12.09 mysqld<br \/>\n    611 root      20   0   43372  37364  10276 S   1.0   0.2   0:12.41 python3<br \/>\n      2 root      20   0    2616   1444   1320 S   0.0   0.0   0:00.00 init-systemd(Ub<br \/>\n      9 root      20   0    2616      4      0 S   0.0   0.0   0:00.00 init<br \/>\n     44 root      19  -1   47836  15508  14424 S   0.0   0.1   0:00.14 systemd-journal<br \/>\n     69 root      20   0   22224   6104   4560 S   0.0   0.0   0:00.24 systemd-udevd <\/p>\n<h3 id=\"\u5206\u6790\u9ad8-cpu-\u4f7f\u7528\u7684\u8fdb\u7a0b\">\u5206\u6790\u9ad8 CPU \u4f7f\u7528\u7684\u8fdb\u7a0b<\/h3>\n<p>\u5982\u679c\u53d1\u73b0\u67d0\u4e2a\u8fdb\u7a0b\u4f7f\u7528\u4e86\u5927\u91cf CPU&#xff0c;\u8fdb\u4e00\u6b65\u5206\u6790\u8be5\u8fdb\u7a0b\u7684\u539f\u56e0&#xff1a;<\/p>\n<ul>\n<li>\n<p>\u68c0\u67e5\u8be5\u8fdb\u7a0b\u662f\u5426\u4e3a\u6b63\u5e38\u8fdb\u7a0b&#xff0c;\u662f\u5426\u662f\u4f60\u671f\u671b\u8fd0\u884c\u7684\u670d\u52a1\u3002<\/p>\n<\/li>\n<li>\n<p>\u5982\u679c\u662f\u67d0\u4e2a\u5e94\u7528\u7a0b\u5e8f\u6216\u670d\u52a1\u5bfc\u81f4\u7684&#xff0c;\u67e5\u770b\u8be5\u5e94\u7528\u7684\u65e5\u5fd7\u6587\u4ef6&#xff08;\u901a\u5e38\u4f4d\u4e8e \/var\/log\/ \u6216\u5e94\u7528\u7279\u5b9a\u7684\u65e5\u5fd7\u76ee\u5f55&#xff09;\u3002<\/p>\n<\/li>\n<\/ul>\n<h4 id=\"\u7cfb\u7edf\u65e5\u5fd7\">\u7cfb\u7edf\u65e5\u5fd7<\/h4>\n<p>\u67e5\u770b\u7cfb\u7edf\u65e5\u5fd7\u6587\u4ef6&#xff0c;\u53ef\u80fd\u4f1a\u53d1\u73b0\u4e00\u4e9b\u9519\u8bef\u4fe1\u606f&#xff0c;\u5e2e\u52a9\u6392\u67e5\u539f\u56e0&#xff1a;<\/p>\n<ul>\n<li>\n<p>\/var\/log\/syslog \u6216 \/var\/log\/messages&#xff1a;\u4e00\u822c\u7684\u7cfb\u7edf\u65e5\u5fd7\u3002<\/p>\n<\/li>\n<li>\n<p>\/var\/log\/dmesg&#xff1a;\u5185\u6838\u65e5\u5fd7&#xff0c;\u7279\u522b\u662f\u786c\u4ef6\u76f8\u5173\u7684\u95ee\u9898\u3002<\/p>\n<\/li>\n<li>\n<p>\/var\/log\/auth.log&#xff1a;\u68c0\u67e5\u662f\u5426\u6709\u672a\u6388\u6743\u7684\u8bbf\u95ee\u3002<\/p>\n<\/li>\n<\/ul>\n<h3 id=\"\u68c0\u67e5-io-\u64cd\u4f5c\">\u68c0\u67e5 I\/O \u64cd\u4f5c<\/h3>\n<p>\u8fc7\u5ea6\u7684\u78c1\u76d8 I\/O \u6216\u7f51\u7edc I\/O \u4e5f\u53ef\u80fd\u5bfc\u81f4 CPU \u4f7f\u7528\u7387\u5347\u9ad8\u3002<\/p>\n<p>\u4f60\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u8fdb\u884c\u68c0\u67e5&#xff1a;<\/p>\n<ul>\n<li>\n<p>iostat&#xff1a;\u67e5\u770b\u78c1\u76d8\u7684 I\/O \u60c5\u51b5\u3002<\/p>\n<\/li>\n<li>\n<p>iotop&#xff1a;\u5b9e\u65f6\u76d1\u63a7\u78c1\u76d8 I\/O&#xff08;\u9700\u8981 root \u6743\u9650&#xff09;\u3002<\/p>\n<\/li>\n<li>\n<p>netstat -tuln \u6216 ss -tuln&#xff1a;\u67e5\u770b\u5f53\u524d\u7684\u7f51\u7edc\u8fde\u63a5&#xff0c;\u5224\u65ad\u662f\u5426\u6709\u5927\u91cf\u7684\u7f51\u7edc\u901a\u4fe1\u5bfc\u81f4 CPU \u5360\u7528\u589e\u52a0\u3002<\/p>\n<\/li>\n<\/ul>\n<h4 id=\"iostat-\u6548\u679c\">iostat \u6548\u679c<\/h4>\n<p>linux iostat \u4ecb\u7ecd <\/p>\n<p>$ iostat<br \/>\nCommand &#039;iostat&#039; not found, but can be installed with:<br \/>\nsudo apt install sysstat <\/p>\n<p>\u63d0\u793a\u6ca1\u5b89\u88c5&#xff0c;\u6211\u4eec\u5b89\u88c5\u4e00\u4e0b<\/p>\n<p>sudo apt install sysstat <\/p>\n<p>\u518d\u6b21\u6267\u884c&#xff1a;<\/p>\n<p>$ iostat<br \/>\nLinux 5.15.167.4-microsoft-standard-WSL2 (PC-20230404XHIO)      11\/30\/24        _x86_64_        (20 CPU)<\/p>\n<p>avg-cpu:  %user   %nice %system %iowait  %steal   %idle<br \/>\n           0.19    0.01    0.13    0.08    0.00   99.60<\/p>\n<p>Device             tps    kB_read\/s    kB_wrtn\/s    kB_dscd\/s    kB_read    kB_wrtn    kB_dscd<br \/>\nsda               0.44        29.22         0.00         0.00      78933          0          0<br \/>\nsdb               0.04         0.82         0.00         0.00       2228          4          0<br \/>\nsdc               7.03       209.14        51.84       172.57     564925     140028     466136 <\/p>\n<h3 id=\"\u68c0\u67e5\u5185\u5b58\u662f\u5426\u5145\u8db3\">\u68c0\u67e5\u5185\u5b58\u662f\u5426\u5145\u8db3<\/h3>\n<p>\u5982\u679c\u7cfb\u7edf\u5185\u5b58\u4e0d\u8db3&#xff0c;\u53ef\u80fd\u4f1a\u5bfc\u81f4\u5927\u91cf\u7684\u4ea4\u6362&#xff08;swap&#xff09;\u64cd\u4f5c&#xff0c;\u8fdb\u800c\u589e\u52a0 CPU \u4f7f\u7528\u7387\u3002<\/p>\n<p>\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u67e5\u770b\u5185\u5b58\u4f7f\u7528\u60c5\u51b5&#xff1a;<\/p>\n<ul>\n<li>\n<p>free -h&#xff1a;\u67e5\u770b\u5185\u5b58\u548c\u4ea4\u6362\u7a7a\u95f4\u7684\u4f7f\u7528\u60c5\u51b5\u3002<\/p>\n<\/li>\n<li>\n<p>vmstat&#xff1a;\u67e5\u770b\u5185\u5b58\u7684\u4ea4\u6362&#xff08;swap&#xff09;\u60c5\u51b5\u3002<\/p>\n<\/li>\n<\/ul>\n<h4 id=\"free-\u6548\u679c\">free \u6548\u679c<\/h4>\n<p>\u8fd9\u4e2a\u662f\u5f88\u5e38\u7528\u7684\u4e00\u4e2a\u547d\u4ee4&#xff1a;<\/p>\n<p>$ free -h<br \/>\n               total        used        free      shared  buff\/cache   available<br \/>\nMem:            15Gi       961Mi        14Gi       3.0Mi       398Mi        14Gi<br \/>\nSwap:          4.0Gi          0B       4.0Gi <\/p>\n<p>linux free \u547d\u4ee4<\/p>\n<h4 id=\"vmstat-\u6548\u679c\">vmstat \u6548\u679c<\/h4>\n<ul>\n<li>vmstat 1&#xff1a;\u6bcf\u79d2\u663e\u793a\u4e00\u6b21\u7cfb\u7edf\u7684\u865a\u62df\u5185\u5b58\u7edf\u8ba1\u4fe1\u606f&#xff0c;\u5305\u542b CPU \u4f7f\u7528\u3001\u8fdb\u7a0b\u3001\u5185\u5b58\u7b49\u6570\u636e\u3002<\/li>\n<\/ul>\n<p>\u4e0b\u9762\u7684\u547d\u4ee4\u662f 2S \u4e00\u6b21&#xff0c;\u5171\u8ba1 5 \u6b21\u3002<\/p>\n<p>$ vmstat 2 5<br \/>\nprocs &#8212;&#8212;&#8212;&#8211;memory&#8212;&#8212;&#8212;- &#8212;swap&#8211; &#8212;&#8211;io&#8212;- -system&#8211; &#8212;&#8212;cpu&#8212;&#8211;<br \/>\n r  b   swpd   free   buff  cache   si   so    bi    bo   in   cs us sy id wa st<br \/>\n 0  0      0 15061208   2616 302412    0    0    31     8   11   47  0  0 99  0  0<br \/>\n 0  0      0 15060708   2616 302412    0    0     0     0   60  531  0  0 100  0  0<br \/>\n 0  0      0 15062192   2616 302412    0    0     0     0   76  542  0  0 100  0  0<br \/>\n 0  0      0 15061940   2616 302412    0    0     0     0   63  535  0  0 100  0  0<br \/>\n 0  0      0 15062192   2616 302412    0    0     0     0   59  531  0  0 100  0  0 <\/p>\n<p>linux vmstat \u4ecb\u7ecd <\/p>\n<h2 id=\"\u5176\u4ed6\">\u5176\u4ed6<\/h2>\n<p>\u5982\u679c\u4e0a\u9762\u90fd\u5206\u6790\u4e86\u4e00\u904d&#xff0c;\u4e0b\u9762\u7684\u4e5f\u53ef\u4f5c\u4e3a\u4e00\u79cd\u601d\u8def\u53c2\u8003&#xff0c;\u4f46\u662f\u4e00\u822c\u53ef\u80fd\u6027\u6bd4\u8f83\u4f4e\u3002<\/p>\n<h3 id=\"\u68c0\u67e5\u662f\u5426\u5b58\u5728\u6076\u610f\u8fdb\u7a0b\">\u68c0\u67e5\u662f\u5426\u5b58\u5728\u6076\u610f\u8fdb\u7a0b<\/h3>\n<p>\u5982\u679c\u7cfb\u7edf\u4e2d\u51fa\u73b0\u4e86\u4e0d\u660e\u8fdb\u7a0b&#xff0c;\u53ef\u80fd\u662f\u88ab\u653b\u51fb\u6216\u6709\u6076\u610f\u8f6f\u4ef6\u3002<\/p>\n<p>\u4f60\u53ef\u4ee5&#xff1a;<\/p>\n<ul>\n<li>\n<p>\u4f7f\u7528 ps \u548c top \u67e5\u627e\u4e0d\u660e\u8fdb\u7a0b\u3002<\/p>\n<\/li>\n<li>\n<p>\u68c0\u67e5\u5f02\u5e38\u8fdb\u7a0b\u7684\u542f\u52a8\u65f6\u95f4\u548c\u8def\u5f84&#xff0c;\u5224\u65ad\u662f\u5426\u662f\u6076\u610f\u8f6f\u4ef6\u6216\u75c5\u6bd2\u3002<\/p>\n<\/li>\n<\/ul>\n<h3 id=\"\u68c0\u67e5\u5b9a\u65f6\u4efb\u52a1\u548c\u540e\u53f0\u8fdb\u7a0b\">\u68c0\u67e5\u5b9a\u65f6\u4efb\u52a1\u548c\u540e\u53f0\u8fdb\u7a0b**<\/h3>\n<p>\u5b9a\u65f6\u4efb\u52a1&#xff08;\u5982 cron&#xff09;\u6216\u540e\u53f0\u670d\u52a1&#xff08;\u5982\u5b88\u62a4\u8fdb\u7a0b&#xff09;\u53ef\u80fd\u4f1a\u5728\u7279\u5b9a\u65f6\u95f4\u6267\u884c\u5927\u91cf\u8ba1\u7b97\u6216\u5176\u4ed6\u64cd\u4f5c\u3002<\/p>\n<p>\u68c0\u67e5\u662f\u5426\u6709\u5b9a\u65f6\u4efb\u52a1\u5f02\u5e38&#xff1a;<\/p>\n<ul>\n<li>\n<p>crontab -l&#xff1a;\u67e5\u770b\u5f53\u524d\u7528\u6237\u7684\u5b9a\u65f6\u4efb\u52a1\u3002<\/p>\n<\/li>\n<li>\n<p>sudo crontab -l&#xff1a;\u67e5\u770b root \u7528\u6237\u7684\u5b9a\u65f6\u4efb\u52a1\u3002<\/p>\n<\/li>\n<\/ul>\n<p>\u8fd9\u79cd\u4e00\u822c\u6bd4\u8f83\u5c11&#xff0c;\u4e0d\u8fc7\u8fd8\u662f\u6709\u4e00\u4e9b\u7cfb\u7edf\u901a\u8fc7 cron \u5b9e\u73b0\u8c03\u5ea6\u7684\u3002<\/p>\n<h3 id=\"\u68c0\u67e5\u7cfb\u7edf\u8d44\u6e90\u9650\u5236\">\u68c0\u67e5\u7cfb\u7edf\u8d44\u6e90\u9650\u5236<\/h3>\n<p>\u53ef\u80fd\u5b58\u5728\u7cfb\u7edf\u8d44\u6e90\u9650\u5236\u5bfc\u81f4\u67d0\u4e9b\u8fdb\u7a0b\u88ab\u8feb\u5927\u91cf\u5360\u7528 CPU\u3002<\/p>\n<p>\u53ef\u4ee5\u68c0\u67e5\u4ee5\u4e0b\u53c2\u6570&#xff1a;<\/p>\n<ul>\n<li>\n<p>ulimit -a&#xff1a;\u67e5\u770b\u5f53\u524d\u7528\u6237\u7684\u8d44\u6e90\u9650\u5236\u3002<\/p>\n<\/li>\n<li>\n<p>sysctl -a&#xff1a;\u67e5\u770b\u7cfb\u7edf\u7684\u5185\u6838\u53c2\u6570\u914d\u7f6e&#xff0c;\u5c24\u5176\u662f\u4e0e\u8fdb\u7a0b\u8c03\u5ea6\u548c\u8d44\u6e90\u9650\u5236\u76f8\u5173\u7684\u53c2\u6570\u3002<\/p>\n<\/li>\n<\/ul>\n<h2 id=\"\u5c0f\u7ed3\">\u5c0f\u7ed3<\/h2>\n<p>\u53ef\u4ee5\u53d1\u73b0&#xff0c;\u5982\u679c\u6211\u4eec\u6ca1\u6709\u7edf\u4e00\u7684\u76d1\u63a7\u5e73\u53f0&#xff0c;\u53ef\u80fd\u8fd8\u662f\u8981\u5bf9 linux \u7684\u547d\u4ee4\u6bd4\u8f83\u719f\u6089\u3002<\/p>\n<p>\u6709\u4e00\u4e9b\u7edf\u4e00\u76d1\u63a7\u7cfb\u7edf&#xff0c;\u6bd4\u5982\u666e\u7c73\/zabbix&#xff0c;\u95ee\u9898\u6392\u67e5\u4f1a\u66f4\u52a0\u76f4\u89c2\u4e00\u4e9b\u3002\u4f46\u662f\u6392\u67e5\u601d\u8def\u662f\u4e00\u6837\u7684\u3002<\/p>\n<p>\u5e0c\u671b\u672c\u6587\u5bf9\u4f60\u6709\u6240\u5e2e\u52a9&#xff0c;\u5982\u679c\u559c\u6b22&#xff0c;\u6b22\u8fce\u70b9\u8d5e\u6536\u85cf\u8f6c\u53d1\u4e00\u6ce2\u3002<\/p>\n<p>\u6211\u662f\u8001\u9a6c&#xff0c;\u671f\u5f85\u4e0e\u4f60\u7684\u4e0b\u6b21\u76f8\u9047\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6587\u7ae0\u6d4f\u89c8\u9605\u8bfb827\u6b21\uff0c\u70b9\u8d5e14\u6b21\uff0c\u6536\u85cf11\u6b21\u3002\u5927\u5bb6\u597d\uff0c\u6211\u662f\u8001\u9a6c\u3002\u6709\u65f6\u5019\u6211\u4eec\u76d1\u63a7\u4e86\u5e94\u7528\u7684 cpu \u4f7f\u7528\u7387\uff0c\u8fc7\u9ad8\u7684\u65f6\u5019\u9700\u8981\u5206\u6790\u6392\u67e5\uff0c\u90a3\u4e48\u4e00\u822c\u7684\u5206\u6790\u6d41\u7a0b\u5e94\u8be5\u662f\u4ec0\u4e48\u6837\u7684\uff1f_linux\u670d\u52a1\u5668cpu\u5360\u7528\u8fc7\u9ad8\u600e\u4e48\u6392\u67e5<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[99],"topic":[],"class_list":["post-23653","post","type-post","status-publish","format-standard","hentry","category-server","tag-java"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v20.3 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>jvm-49-linux \u670d\u52a1\u5668 cpu \u4f7f\u7528\u7387\u5347\u9ad8\u5e94\u8be5\u5982\u4f55\u6392\u67e5\u5206\u6790\uff1f - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.wsisp.com\/helps\/23653.html\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"jvm-49-linux \u670d\u52a1\u5668 cpu \u4f7f\u7528\u7387\u5347\u9ad8\u5e94\u8be5\u5982\u4f55\u6392\u67e5\u5206\u6790\uff1f - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\" \/>\n<meta property=\"og:description\" content=\"\u6587\u7ae0\u6d4f\u89c8\u9605\u8bfb827\u6b21\uff0c\u70b9\u8d5e14\u6b21\uff0c\u6536\u85cf11\u6b21\u3002\u5927\u5bb6\u597d\uff0c\u6211\u662f\u8001\u9a6c\u3002\u6709\u65f6\u5019\u6211\u4eec\u76d1\u63a7\u4e86\u5e94\u7528\u7684 cpu \u4f7f\u7528\u7387\uff0c\u8fc7\u9ad8\u7684\u65f6\u5019\u9700\u8981\u5206\u6790\u6392\u67e5\uff0c\u90a3\u4e48\u4e00\u822c\u7684\u5206\u6790\u6d41\u7a0b\u5e94\u8be5\u662f\u4ec0\u4e48\u6837\u7684\uff1f_linux\u670d\u52a1\u5668cpu\u5360\u7528\u8fc7\u9ad8\u600e\u4e48\u6392\u67e5\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.wsisp.com\/helps\/23653.html\" \/>\n<meta property=\"og:site_name\" content=\"\u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\" \/>\n<meta property=\"article:published_time\" content=\"2025-04-19T00:22:51+00:00\" \/>\n<meta name=\"author\" content=\"admin\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u4f5c\u8005\" \/>\n\t<meta name=\"twitter:data1\" content=\"admin\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u9884\u8ba1\u9605\u8bfb\u65f6\u95f4\" \/>\n\t<meta name=\"twitter:data2\" content=\"4 \u5206\" \/>\n<script type=\"application\/ld+json\" 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