{"id":32332,"date":"2026-07-31T10:00:00","date_gmt":"2026-07-31T02:00:00","guid":{"rendered":"https:\/\/cn.hostease.com\/blog\/?p=32332"},"modified":"2026-08-04T18:08:11","modified_gmt":"2026-08-04T10:08:11","slug":"systemd-resource-limits-linux","status":"publish","type":"post","link":"https:\/\/cn.hostease.com\/blog\/guides\/systemd-resource-limits-linux\/","title":{"rendered":"systemd \u8d44\u6e90\u9650\u5236\u5b9e\u6218\uff1a\u9632\u6b62\u5355\u4e2a\u670d\u52a1\u62d6\u57ae\u6574\u53f0 Linux \u670d\u52a1\u5668"},"content":{"rendered":"

\"systemd<\/p>\n

\u5f88\u591a Linux \u670d\u52a1\u5668\u4e8b\u6545\u5e76\u4e0d\u662f\u6574\u5957\u7cfb\u7edf\u540c\u65f6\u574f\u6389\uff0c\u800c\u662f\u4e00\u4e2a\u540e\u53f0\u670d\u52a1\u7a81\u7136\u5403\u6ee1 CPU\u3001\u5185\u5b58\u6216\u6587\u4ef6\u53e5\u67c4\uff0c\u8fde\u5e26\u6570\u636e\u5e93\u3001Web \u670d\u52a1\u548c SSH \u767b\u5f55\u90fd\u53d8\u6162\u3002\u672c\u6587\u4f1a\u6559\u4f60\u5982\u4f55\u7528 systemd \u8d44\u6e90\u9650\u5236\u7ed9\u670d\u52a1\u8bbe\u7f6e\u8fb9\u754c\uff0c\u8ba9\u5f02\u5e38\u8fdb\u7a0b\u5148\u88ab\u9650\u5236\u5728\u81ea\u5df1\u7684\u201c\u9694\u79bb\u533a\u201d\u91cc\uff0c\u5e2e\u52a9\u8fd0\u7ef4\u4eba\u5458\u628a\u6545\u969c\u5f71\u54cd\u63a7\u5236\u5728\u66f4\u5c0f\u8303\u56f4\u3002\u8fd9\u91cc\u7684\u91cd\u70b9\u4e0d\u662f\u5806\u53c2\u6570\uff0c\u800c\u662f\u628a\u9650\u5236\u9879\u3001\u9a8c\u8bc1\u547d\u4ee4\u548c\u56de\u6eda\u65b9\u5f0f\u653e\u8fdb\u4e00\u5957\u53ef\u6267\u884c\u6d41\u7a0b\u4e2d\u3002<\/p>\n

\u4e3a\u4ec0\u4e48\u5355\u4e2a\u670d\u52a1\u4f1a\u62d6\u57ae\u6574\u53f0\u670d\u52a1\u5668<\/h2>\n

\u5728\u4e00\u53f0\u5e38\u89c1\u4e1a\u52a1\u670d\u52a1\u5668\u4e0a\uff0cWeb \u670d\u52a1\u3001\u961f\u5217\u4efb\u52a1\u3001\u76d1\u63a7 Agent\u3001\u65e5\u5fd7\u91c7\u96c6\u548c\u5b9a\u65f6\u811a\u672c\u5f80\u5f80\u5171\u7528\u540c\u4e00\u7ec4 CPU\u3001\u5185\u5b58\u3001\u78c1\u76d8 IO \u4e0e\u7f51\u7edc\u8d44\u6e90\u3002\u6b63\u5e38\u60c5\u51b5\u4e0b\u8fd9\u4e9b\u8fdb\u7a0b\u4e92\u4e0d\u5e72\u6270\uff1b\u4e00\u65e6\u67d0\u4e2a\u670d\u52a1\u8fdb\u5165\u6b7b\u5faa\u73af\u3001\u6253\u5f00\u8fc7\u591a\u8fde\u63a5\u3001\u5199\u5165\u5927\u91cf\u65e5\u5fd7\uff0c\u7cfb\u7edf\u8c03\u5ea6\u5668\u4ecd\u4f1a\u5c3d\u91cf\u6ee1\u8db3\u5b83\u7684\u8d44\u6e90\u8bf7\u6c42\uff0c\u76f4\u5230\u5176\u4ed6\u5173\u952e\u8fdb\u7a0b\u88ab\u6324\u538b\u3002<\/p>\n

\u4ee5\u4e00\u4e2a 2 \u6838 4GB \u7684\u4e1a\u52a1\u8282\u70b9\u4e3a\u4f8b\uff0c\u5982\u679c\u67d0\u4e2a\u56fe\u50cf\u5904\u7406\u811a\u672c\u56e0\u4e3a\u5f02\u5e38\u4efb\u52a1\u5e76\u53d1\u62c9\u6ee1 2 \u4e2a\u6838\u5fc3\uff0cNginx \u4ecd\u80fd\u63a5\u53d7\u8fde\u63a5\uff0c\u4f46\u540e\u7aef\u54cd\u5e94\u53ef\u80fd\u4ece 200ms \u4e0a\u5347\u5230\u6570\u79d2\uff1b\u5982\u679c\u5b83\u7ee7\u7eed\u7533\u8bf7\u5185\u5b58\uff0c\u7cfb\u7edf\u53ef\u80fd\u89e6\u53d1 OOM Killer\uff0c\u6700\u7ec8\u88ab\u6740\u6389\u7684\u4e0d\u4e00\u5b9a\u662f\u51fa\u95ee\u9898\u7684\u811a\u672c\uff0c\u4e5f\u53ef\u80fd\u662f\u6570\u636e\u5e93\u6216\u7f13\u5b58\u8fdb\u7a0b\u3002\u76f8\u6bd4\u4e8b\u540e\u67e5\u65e5\u5fd7\uff0c\u63d0\u524d\u7ed9\u975e\u6838\u5fc3\u670d\u52a1\u8bbe\u7f6e CPU\u3001\u5185\u5b58\u3001\u8fdb\u7a0b\u6570\u548c\u6587\u4ef6\u53e5\u67c4\u4e0a\u9650\uff0c\u66f4\u9002\u5408\u4e2d\u5c0f\u56e2\u961f\u7684\u65e5\u5e38\u8fd0\u7ef4\u3002<\/p>\n

\u5982\u679c\u4f60\u7684\u4e1a\u52a1\u8fd0\u884c\u5728 VPS\uff08\u865a\u62df\u4e13\u7528\u670d\u52a1\u5668\uff09<\/a> \u6216 \u72ec\u670d\uff08\u72ec\u7acb\u670d\u52a1\u5668\uff09<\/a> \u4e0a\uff0c\u8d44\u6e90\u8fb9\u754c\u5c24\u5176\u91cd\u8981\u3002VPS<\/a>\uff08\u865a\u62df\u4e13\u7528\u670d\u52a1\u5668<\/a>\uff09\u901a\u5e38\u89c4\u683c\u56fa\u5b9a\uff0c\u7a81\u53d1\u5f02\u5e38\u66f4\u5bb9\u6613\u5f71\u54cd\u6574\u7ad9\uff1b\u72ec\u670d\uff08\u72ec\u7acb\u670d\u52a1\u5668<\/a>\uff09\u8d44\u6e90\u66f4\u5145\u8db3\uff0c\u4f46\u5355\u4e2a\u6279\u5904\u7406\u4efb\u52a1\u4e5f\u53ef\u80fd\u541e\u6389\u5927\u91cf IO\uff0c\u5bfc\u81f4\u4e3b\u7ad9\u54cd\u5e94\u6296\u52a8\u3002<\/p>\n

\"\u5f02\u5e38\u670d\u52a1\u5f71\u54cd\u8d44\u6e90\u6c60\u793a\u610f\u56fe\"<\/p>\n

\u5148\u627e\u51c6\u8981\u9650\u5236\u7684\u670d\u52a1\uff0c\u4e0d\u8981\u4e00\u4e0a\u6765\u5168\u5c40\u6536\u7d27<\/h2>\n

systemd \u7684\u4f18\u52bf\u662f\u6309 unit \u7ba1\u7406\u670d\u52a1\u3002\u4e5f\u5c31\u662f\u8bf4\uff0c\u4f60\u53ef\u4ee5\u53ea\u9650\u5236\u67d0\u4e2a .service<\/code>\uff0c\u800c\u4e0d\u662f\u4fee\u6539\u6574\u673a\u5185\u6838\u53c2\u6570\u3002\u8fd9\u6837\u505a\u7684\u98ce\u9669\u66f4\u4f4e\uff1a\u5982\u679c\u9650\u5236\u592a\u4e25\uff0c\u53ea\u4f1a\u5f71\u54cd\u76ee\u6807\u670d\u52a1\uff1b\u5982\u679c\u914d\u7f6e\u4e0d\u5408\u9002\uff0c\u4e5f\u80fd\u901a\u8fc7 drop-in \u6587\u4ef6\u5feb\u901f\u56de\u6eda\u3002<\/p>\n

\u5f00\u59cb\u524d\u5efa\u8bae\u5148\u786e\u8ba4 3 \u4ef6\u4e8b\u3002\u7b2c\u4e00\uff0c\u76ee\u6807\u670d\u52a1\u662f\u5426\u7531 systemd \u6258\u7ba1\uff0c\u53ef\u4ee5\u7528 systemctl status \u670d\u52a1\u540d<\/code> \u67e5\u770b\uff1b\u7b2c\u4e8c\uff0c\u670d\u52a1\u662f\u5426\u6709\u72ec\u7acb unit\uff0c\u800c\u4e0d\u662f\u6df7\u5728\u4e00\u4e2a\u5927\u811a\u672c\u91cc\uff1b\u7b2c\u4e09\uff0c\u670d\u52a1\u7684\u6b63\u5e38\u8d44\u6e90\u5cf0\u503c\u5927\u6982\u662f\u591a\u5c11\u3002\u6ca1\u6709\u57fa\u7ebf\u5c31\u76f4\u63a5\u9650\u6d41\uff0c\u5f88\u5bb9\u6613\u628a\u6b63\u5e38\u4e1a\u52a1\u8bef\u4f24\u3002<\/p>\n

\u5e38\u7528\u89c2\u5bdf\u547d\u4ee4\u5982\u4e0b\uff1a<\/p>\n

\nsystemctl status example.service\nsystemctl show example.service -p MainPID -p MemoryCurrent -p CPUUsageNSec\nsystemd-cgtop\npidstat -p $(systemctl show -p MainPID --value example.service) 1 5\n<\/pre>\n
\u5728\u6392\u67e5\u670d\u52a1\u5668\u6027\u80fd<\/a>\u95ee\u9898\u65f6\uff0c\u4e5f\u53ef\u4ee5\u53c2\u8003 Hostease \u4e2d\u6587\u535a\u5ba2\u7684 \u670d\u52a1\u5668\u914d\u7f6e\u4e0e\u4f18\u5316\u680f\u76ee<\/a>\u3002\u8fd9\u91cc\u7684\u601d\u8def\u4e0e\u5e38\u89c4\u6027\u80fd\u4f18\u5316\u4e0d\u540c\uff1a\u6027\u80fd\u4f18\u5316\u8ffd\u6c42\u66f4\u5feb\uff0c\u8d44\u6e90\u9650\u5236\u8ffd\u6c42\u201c\u5f02\u5e38\u65f6\u4e0d\u8981\u62d6\u57ae\u5168\u5c40\u201d\u3002<\/p>\n
CPU \u9650\u5236\uff1a\u8ba9\u5f02\u5e38\u4efb\u52a1\u6162\u4e0b\u6765\uff0c\u800c\u4e0d\u662f\u6324\u8d70\u5173\u952e\u670d\u52a1<\/h2>\n
CPU \u662f\u6700\u5bb9\u6613\u88ab\u8bef\u89e3\u7684\u9650\u5236\u9879\u3002CPUQuota=50%<\/code> \u5e76\u4e0d\u8868\u793a\u670d\u52a1\u53ea\u80fd\u7528\u534a\u4e2a\u7269\u7406 CPU\uff0c\u800c\u662f\u9650\u5236\u5b83\u5728\u4e00\u4e2a CPU \u6838\u5fc3\u4e0a\u7684\u65f6\u95f4\u4efd\u989d\u3002\u82e5\u670d\u52a1\u5668\u6709 2 \u4e2a\u6838\u5fc3\uff0cCPUQuota=100%<\/code> \u5927\u81f4\u8868\u793a\u6700\u591a\u4f7f\u7528 1 \u4e2a\u6838\u5fc3\u7684\u6ee1\u8d1f\u8f7d\u65f6\u95f4\uff1bCPUQuota=200%<\/code> \u624d\u63a5\u8fd1 2 \u4e2a\u6838\u5fc3\u3002<\/p>\n
\u5bf9\u540e\u53f0\u4efb\u52a1\u3001\u722c\u866b\u3001\u56fe\u7247\u5904\u7406\u3001\u62a5\u8868\u751f\u6210\u8fd9\u7c7b\u975e\u5b9e\u65f6\u670d\u52a1\uff0c\u53ef\u4ee5\u5148\u7528 drop-in \u6587\u4ef6\u8bbe\u7f6e CPU \u4e0a\u9650\uff1a<\/p>\n
\nsudo systemctl edit example.service\n<\/pre>\n
\u5199\u5165\u4ee5\u4e0b\u5185\u5bb9\uff1a<\/p>\n
\n[Service]\nCPUAccounting=true\nCPUQuota=60%\n<\/pre>\n
\u4fdd\u5b58\u540e\u6267\u884c\uff1a<\/p>\n
\nsudo systemctl daemon-reload\nsudo systemctl restart example.service\nsystemctl show example.service -p CPUAccounting -p CPUQuotaPerSecUSec\n<\/pre>\n
\"CPU<\/p>\n
\u5185\u5b58\u9650\u5236\uff1a\u628a OOM \u98ce\u9669\u9501\u5728\u670d\u52a1\u8fb9\u754c\u5185<\/h2>\n
\u5185\u5b58\u9650\u5236\u6bd4 CPU \u66f4\u654f\u611f\uff0c\u56e0\u4e3a\u8bbe\u7f6e\u8fc7\u4f4e\u4f1a\u5bfc\u81f4\u670d\u52a1\u9891\u7e41\u9000\u51fa\u3002systemd \u5e38\u7528\u7684\u53c2\u6570\u662f MemoryAccounting=true<\/code> \u548c MemoryMax=<\/code>\u3002\u524d\u8005\u542f\u7528\u7edf\u8ba1\uff0c\u540e\u8005\u8bbe\u7f6e\u4e0a\u9650\u3002\u4f60\u53ef\u4ee5\u5148\u53ea\u5f00\u542f\u7edf\u8ba1\uff0c\u89c2\u5bdf\u51e0\u5929\u540e\u518d\u8bbe\u7f6e\u4e0a\u9650\u3002<\/p>\n
\u793a\u4f8b\u914d\u7f6e\uff1a<\/p>\n
\n[Service]\nMemoryAccounting=true\nMemoryMax=768M\n<\/pre>\n
\u5e94\u7528\u540e\u68c0\u67e5\uff1a<\/p>\n
\nsudo systemctl daemon-reload\nsudo systemctl restart example.service\nsystemctl show example.service -p MemoryAccounting -p MemoryCurrent -p MemoryMax\njournalctl -u example.service -n 80 --no-pager\n<\/pre>\n
\u5047\u8bbe\u67d0\u4e2a\u961f\u5217 Worker \u5e73\u65f6\u5360\u7528 180MB\uff0c\u4e1a\u52a1\u9ad8\u5cf0\u7ea6 420MB\uff0c\u5076\u53d1\u5f02\u5e38\u4f1a\u6da8\u5230 2GB\u3002\u628a MemoryMax<\/code> \u8bbe\u7f6e\u6210 768MB\uff0c\u65e2\u7ed9\u6b63\u5e38\u9ad8\u5cf0\u7559\u51fa\u7a7a\u95f4\uff0c\u53c8\u80fd\u907f\u514d\u5b83\u628a 4GB \u5c0f\u89c4\u683c\u670d\u52a1\u5668\u7684\u5185\u5b58\u5403\u7a7a\u3002\u5982\u679c\u65e5\u5fd7\u4e2d\u51fa\u73b0 memory limit<\/code> \u6216\u670d\u52a1\u88ab\u9891\u7e41\u91cd\u542f\uff0c\u5c31\u8bf4\u660e\u4e0a\u9650\u53ef\u80fd\u8fc7\u4f4e\uff0c\u6216\u8005\u7a0b\u5e8f\u672c\u8eab\u5b58\u5728\u5185\u5b58\u6cc4\u6f0f\uff0c\u9700\u8981\u56de\u5230\u4ee3\u7801\u6216\u4efb\u52a1\u62c6\u5206\u5c42\u9762\u5904\u7406\u3002<\/p>\n
\u5bf9\u4e8e WordPress \u7ad9\u70b9\u3001PHP-FPM\u3001\u7f13\u5b58\u670d\u52a1\u7b49\u573a\u666f\uff0c\u5185\u5b58\u9650\u5236\u8fd8\u8981\u7ed3\u5408\u8fdb\u7a0b\u6c60\u914d\u7f6e\u4e00\u8d77\u770b\u3002\u4f60\u53ef\u4ee5\u628a systemd \u9650\u5236\u7406\u89e3\u4e3a\u6700\u540e\u4e00\u9053\u62a4\u680f\uff0c\u800c\u4e0d\u662f\u66ff\u4ee3\u5e94\u7528\u81ea\u8eab\u7684 pm.max_children<\/code>\u3001\u961f\u5217\u5e76\u53d1\u6570\u6216\u7f13\u5b58\u5bb9\u91cf\u3002\u5173\u4e8e\u7f51\u7ad9\u6027\u80fd<\/a>\u6392\u67e5\uff0c\u53ef\u4ee5\u5ef6\u4f38\u9605\u8bfb TTFB \u4e0e\u4e3b\u673a\u4f18\u5316\u6307\u5357<\/a>\uff0c\u628a\u5e94\u7528\u5c42\u548c\u7cfb\u7edf\u5c42\u4e00\u8d77\u7eb3\u5165\u89c2\u5bdf\u3002<\/p>\n
\u8fdb\u7a0b\u6570\u4e0e\u6587\u4ef6\u53e5\u67c4\uff1a\u9650\u5236\u201c\u6162\u6027\u8017\u5c3d\u201d\u95ee\u9898<\/h2>\n
\u6709\u4e9b\u6545\u969c\u4e0d\u662f CPU \u6216\u5185\u5b58\u77ac\u95f4\u6253\u6ee1\uff0c\u800c\u662f\u8fdb\u7a0b\u6570\u3001\u7ebf\u7a0b\u6570\u3001\u6253\u5f00\u6587\u4ef6\u6570\u9010\u6b65\u5347\u9ad8\u3002\u5178\u578b\u573a\u666f\u5305\u62ec\u811a\u672c\u4e0d\u65ad fork \u5b50\u8fdb\u7a0b\u3001\u8fde\u63a5\u6c60\u6ca1\u6709\u91ca\u653e\u3001\u65e5\u5fd7\u6587\u4ef6\u8f6e\u8f6c\u5f02\u5e38\u3001\u4efb\u52a1\u8c03\u5ea6\u91cd\u590d\u542f\u52a8\u3002\u7b49\u5230 fork: Resource temporarily unavailable<\/code> \u6216 Too many open files<\/code> \u51fa\u73b0\u65f6\uff0cSSH \u767b\u5f55\u548c\u76d1\u63a7\u91c7\u96c6\u53ef\u80fd\u5df2\u7ecf\u53d7\u5f71\u54cd\u3002<\/p>\n
systemd \u53ef\u4ee5\u7528 TasksMax=<\/code> \u63a7\u5236\u4efb\u52a1\u6570\u91cf\uff0c\u7528 LimitNOFILE=<\/code> \u63a7\u5236\u6587\u4ef6\u53e5\u67c4\u3002\u793a\u4f8b\uff1a<\/p>\n
\n[Service]\nTasksAccounting=true\nTasksMax=120\nLimitNOFILE=8192\n<\/pre>\n
\u9a8c\u8bc1\u547d\u4ee4\uff1a<\/p>\n
\nsystemctl show example.service -p TasksAccounting -p TasksCurrent -p TasksMax -p LimitNOFILE\ncat \/proc\/$(systemctl show -p MainPID --value example.service)\/limits\n<\/pre>\n
TasksMax=120<\/code> \u9002\u5408\u9650\u5236\u666e\u901a\u540e\u53f0\u670d\u52a1\uff0c\u4f46\u4e0d\u4e00\u5b9a\u9002\u5408\u9ad8\u5e76\u53d1 Web \u8fdb\u7a0b\u6c60\u3002\u6bd4\u5982 PHP-FPM \u82e5\u914d\u7f6e\u4e86 pm.max_children=80<\/code>\uff0c\u518d\u52a0\u4e0a\u4e3b\u8fdb\u7a0b\u548c\u8f85\u52a9\u7ebf\u7a0b\uff0cTasksMax<\/code> \u5c31\u4e0d\u80fd\u53ea\u8bbe 80\uff0c\u5426\u5219\u6b63\u5e38\u9ad8\u5cf0\u4e5f\u53ef\u80fd\u88ab\u62e6\u622a\u3002\u66f4\u7a33\u59a5\u7684\u505a\u6cd5\u662f\u5148\u7edf\u8ba1 1 \u5929\u5185\u5cf0\u503c\uff0c\u518d\u7559\u51fa 30%-50% \u7f13\u51b2\u3002<\/p>\n
\"\u8fdb\u7a0b\u548c\u6587\u4ef6\u53e5\u67c4\u8fb9\u754c\u793a\u610f\u56fe\"<\/p>\n
IO \u4e0e\u91cd\u542f\u7b56\u7565\uff1a\u907f\u514d\u9650\u5236\u53d8\u6210\u65b0\u7684\u6545\u969c\u6e90<\/h2>\n
\u5728\u6570\u636e\u5e93\u5907\u4efd\u3001\u65e5\u5fd7\u538b\u7f29\u3001\u6279\u91cf\u5bfc\u5165\u7b49\u4efb\u52a1\u4e2d\uff0c\u78c1\u76d8 IO \u5f80\u5f80\u6bd4 CPU \u66f4\u5f71\u54cd\u524d\u53f0\u8bbf\u95ee\u3002\u5982\u679c\u5907\u4efd\u811a\u672c\u6301\u7eed\u8bfb\u53d6\u5927\u6587\u4ef6\uff0cWeb \u670d\u52a1\u53ef\u80fd\u8868\u73b0\u4e3a\u9759\u6001\u8d44\u6e90\u52a0\u8f7d\u53d8\u6162\u3001\u540e\u53f0\u64cd\u4f5c\u5361\u987f\u3002systemd \u5728\u8f83\u65b0\u7684\u53d1\u884c\u7248\u4e2d\u652f\u6301 IOWeight=<\/code>\u3001IOReadBandwidthMax=<\/code>\u3001IOWriteBandwidthMax=<\/code> \u7b49\u63a7\u5236\u9879\uff0c\u4f46\u5177\u4f53\u53ef\u7528\u6027\u4e0e cgroup v2\u3001\u5185\u6838\u7248\u672c\u548c\u78c1\u76d8\u7c7b\u578b\u6709\u5173\uff0c\u6b63\u5f0f\u4f7f\u7528\u524d\u5fc5\u987b\u5148\u9a8c\u8bc1\u3002<\/p>\n
\u53ef\u4ee5\u5148\u67e5\u770b\u7cfb\u7edf\u662f\u5426\u4f7f\u7528 cgroup v2\uff1a<\/p>\n
\nstat -fc %T \/sys\/fs\/cgroup\nsystemctl show --property=DefaultCPUAccounting --property=DefaultMemoryAccounting\n<\/pre>\n
\u91cd\u542f\u7b56\u7565\u4e5f\u8981\u8c28\u614e\u3002\u5f88\u591a\u4eba\u4f1a\u7ed9\u670d\u52a1\u52a0\u4e0a Restart=always<\/code>\uff0c\u4f46\u5982\u679c\u7a0b\u5e8f\u56e0\u4e3a\u5185\u5b58\u9650\u5236\u4e0d\u65ad\u9000\u51fa\uff0csystemd \u4f1a\u4e0d\u65ad\u62c9\u8d77\u5b83\uff0c\u5f62\u6210\u201c\u9000\u51fa\u2014\u91cd\u542f\u2014\u518d\u9000\u51fa\u201d\u7684\u5faa\u73af\u3002\u5efa\u8bae\u914d\u5408\u4ee5\u4e0b\u53c2\u6570\uff1a<\/p>\n
\n[Service]\nRestart=on-failure\nRestartSec=10s\nStartLimitIntervalSec=300\nStartLimitBurst=5\n<\/pre>\n
\u63a8\u8350\u843d\u5730\u6d41\u7a0b\uff1a\u5148\u7070\u5ea6\uff0c\u518d\u6536\u7d27\uff0c\u518d\u8bb0\u5f55<\/h2>\n
\u4e3a\u4e86\u907f\u514d\u628a\u8d44\u6e90\u9650\u5236\u53d8\u6210\u65b0\u7684\u4e0d\u7a33\u5b9a\u56e0\u7d20\uff0c\u5efa\u8bae\u6309 4 \u6b65\u843d\u5730\u3002\u8fd9\u4e2a\u6d41\u7a0b\u9002\u5408\u5927\u591a\u6570 Linux \u670d\u52a1\u5668\uff0c\u4e5f\u65b9\u4fbf\u56e2\u961f\u5728\u4e0b\u6b21\u8fc1\u79fb\u6216\u6269\u5bb9\u65f6\u590d\u7528\u3002<\/p>\n
    \n
  1. \u89c2\u5bdf\u57fa\u7ebf\uff1a\u7528 systemd-cgtop<\/code>\u3001pidstat<\/code>\u3001journalctl<\/code> \u8bb0\u5f55\u81f3\u5c11 24 \u5c0f\u65f6\u5cf0\u503c\uff0c\u5173\u952e\u670d\u52a1\u5efa\u8bae\u89c2\u5bdf 7 \u5929\u3002<\/li>\n
  2. \u5148\u542f\u7528\u7edf\u8ba1\uff1a\u5148\u914d\u7f6e CPUAccounting=true<\/code>\u3001MemoryAccounting=true<\/code>\uff0c\u4e0d\u7acb\u523b\u8bbe\u7f6e\u5f88\u4f4e\u4e0a\u9650\u3002<\/li>\n
  3. \u5c0f\u5e45\u9650\u5236\uff1a\u975e\u6838\u5fc3\u670d\u52a1\u5148\u4ece CPU 50%-80%\u3001\u5185\u5b58\u5cf0\u503c 1.5 \u500d\u3001\u4efb\u52a1\u6570\u5cf0\u503c 1.3 \u500d\u5f00\u59cb\u3002<\/li>\n
  4. \u9a8c\u8bc1\u4e1a\u52a1\uff1a\u91cd\u542f\u670d\u52a1\u540e\u68c0\u67e5 systemctl show<\/code>\u3001\u4e1a\u52a1\u65e5\u5fd7\u3001\u63a5\u53e3\u54cd\u5e94\u65f6\u95f4\u548c\u544a\u8b66\u72b6\u6001\u3002<\/li>\n
  5. \u5199\u5165\u8bb0\u5f55\uff1a\u628a drop-in \u6587\u4ef6\u8def\u5f84\u3001\u53c2\u6570\u3001\u4fee\u6539\u65f6\u95f4\u548c\u56de\u6eda\u547d\u4ee4\u5199\u8fdb\u8fd0\u7ef4\u6587\u6863\u3002<\/li>\n<\/ol>\n
    \u56de\u6eda\u65b9\u5f0f\u4e5f\u8981\u63d0\u524d\u51c6\u5907\u3002systemd drop-in \u6587\u4ef6\u901a\u5e38\u4f4d\u4e8e \/etc\/systemd\/system\/example.service.d\/override.conf<\/code>\u3002\u5982\u679c\u9650\u5236\u5f71\u54cd\u4e1a\u52a1\uff0c\u53ef\u4ee5\u6267\u884c\uff1a<\/p>\n
    \nsudo systemctl revert example.service\nsudo systemctl daemon-reload\nsudo systemctl restart example.service\n<\/pre>\n
    \u8fd9\u91cc\u7684 revert<\/code> \u4f1a\u79fb\u9664\u901a\u8fc7 systemctl edit<\/code> \u521b\u5efa\u7684\u8986\u76d6\u914d\u7f6e\u3002\u4e3a\u4e86\u964d\u4f4e\u98ce\u9669\uff0c\u5efa\u8bae\u5728\u53d8\u66f4\u524d\u4fdd\u5b58 systemctl cat example.service<\/code> \u8f93\u51fa\uff0c\u5e76\u628a\u53d8\u66f4\u7a97\u53e3\u5b89\u6392\u5728\u4e1a\u52a1\u4f4e\u5cf0\u671f\u3002\u82e5\u670d\u52a1\u5668\u627f\u8f7d\u591a\u4e2a\u7ad9\u70b9\uff0c\u8fd8\u8981\u786e\u8ba4 WordPress \u8fd0\u7ef4\u4e0e\u4f18\u5316<\/a>\u3001\u6570\u636e\u5e93\u5907\u4efd\u3001SSL\uff08\u5b89\u5168\u4f20\u8f93\u534f\u8bae\uff09\u7eed\u671f\u4efb\u52a1\u662f\u5426\u4f1a\u5728\u540c\u4e00\u65f6\u95f4\u6bb5\u8fd0\u884c\uff0c\u907f\u514d\u591a\u4e2a\u540e\u53f0\u4efb\u52a1\u53e0\u52a0\u3002<\/p>\n
    \u54ea\u4e9b\u670d\u52a1\u9002\u5408\u9650\u5236\uff0c\u54ea\u4e9b\u670d\u52a1\u8981\u8c28\u614e<\/h2>\n
    \u5bf9\u6570\u636e\u5e93\u3001\u4e3b Web \u670d\u52a1\u3001\u7f13\u5b58\u3001\u6d88\u606f\u961f\u5217\u7b49\u6838\u5fc3\u7ec4\u4ef6\uff0c\u5e94\u5148\u4f18\u5316\u5e94\u7528\u914d\u7f6e\uff0c\u518d\u7528 systemd \u505a\u4e0a\u5c42\u62a4\u680f\u3002\u4f8b\u5982\u6570\u636e\u5e93\u8fde\u63a5\u6570\u3001\u7f13\u5b58\u5185\u5b58\u4e0a\u9650\u3001Web \u8fdb\u7a0b\u6c60\u6570\u91cf\uff0c\u5f80\u5f80\u6bd4\u5355\u72ec\u8bbe\u7f6e MemoryMax<\/code> \u66f4\u76f4\u63a5\u3002\u5982\u679c\u8fd9\u4e9b\u5e94\u7528\u81ea\u8eab\u6ca1\u6709\u914d\u7f6e\u597d\uff0c\u53ea\u5728 systemd \u5c42\u5f3a\u884c\u8bbe\u9650\uff0c\u53ef\u80fd\u4f1a\u628a\u6027\u80fd\u95ee\u9898\u53d8\u6210\u9891\u7e41\u91cd\u542f\u95ee\u9898\u3002<\/p>\n
    \u5bf9\u4e8e Hostease \u7528\u6237\uff0c\u5982\u679c\u4f60\u4e0d\u786e\u5b9a\u5f53\u524d\u8d44\u6e90\u89c4\u683c\u662f\u5426\u8db3\u591f\uff0c\u53ef\u4ee5\u5148\u4ece\u76d1\u63a7\u6570\u636e\u5224\u65ad\uff1aCPU \u957f\u671f\u8d85\u8fc7 70%\u3001\u5185\u5b58\u53ef\u7528\u91cf\u957f\u671f\u4f4e\u4e8e 15%\u3001\u78c1\u76d8 IO \u7b49\u5f85\u660e\u663e\u5347\u9ad8\uff0c\u8bf4\u660e\u9664\u4e86\u8bbe\u7f6e\u8fb9\u754c\uff0c\u8fd8\u53ef\u80fd\u9700\u8981\u8bc4\u4f30 VPS\uff08\u865a\u62df\u4e13\u7528\u670d\u52a1\u5668<\/a>\uff09\u89c4\u683c\u3001\u72ec\u670d\uff08\u72ec\u7acb\u670d\u52a1\u5668\uff09\u8d44\u6e90\u6216\u67b6\u6784\u62c6\u5206\u3002\u8d44\u6e90\u9650\u5236\u80fd\u9632\u6b62\u5f02\u5e38\u6269\u6563\uff0c\u4f46\u4e0d\u80fd\u66ff\u4ee3\u5bb9\u91cf\u89c4\u5212\u3002<\/p>\n
    \u603b\u7ed3\uff1a\u8d44\u6e90\u9650\u5236\u662f\u670d\u52a1\u5668\u7a33\u5b9a\u6027\u7684\u4fdd\u9669\u4e1d<\/h2>\n
    systemd \u8d44\u6e90\u9650\u5236\u6700\u5b9e\u7528\u7684\u4ef7\u503c\uff0c\u662f\u5728\u670d\u52a1\u5f02\u5e38\u65f6\u63d0\u4f9b\u4e00\u5c42\u201c\u4fdd\u9669\u4e1d\u201d\uff1aCPU \u88ab\u9650\u5236\u540e\uff0c\u540e\u53f0\u4efb\u52a1\u53ef\u4ee5\u6162\u4e00\u70b9\uff1b\u5185\u5b58\u88ab\u9650\u5236\u540e\uff0cOOM \u98ce\u9669\u66f4\u5bb9\u6613\u9501\u5b9a\u5728\u76ee\u6807\u670d\u52a1\uff1b\u8fdb\u7a0b\u6570\u548c\u6587\u4ef6\u53e5\u67c4\u88ab\u9650\u5236\u540e\uff0c\u6162\u6027\u8017\u5c3d\u4e0d\u4f1a\u8f7b\u6613\u62d6\u57ae\u6574\u53f0 Linux \u670d\u52a1\u5668\u3002<\/p>\n
    \u5982\u679c\u4f60\u51c6\u5907\u5728\u751f\u4ea7\u73af\u5883\u4f7f\u7528\uff0c\u5efa\u8bae\u4ece\u4e00\u4e2a\u4f4e\u98ce\u9669\u540e\u53f0\u670d\u52a1\u5f00\u59cb\uff0c\u5148\u5f00\u542f\u7edf\u8ba1\uff0c\u518d\u8bbe\u7f6e\u5bbd\u677e\u4e0a\u9650\uff0c\u89c2\u5bdf 24 \u5c0f\u65f6\u4ee5\u4e0a\u540e\u9010\u6b65\u6536\u7d27\u3002\u5bf9\u4e8e\u627f\u8f7d\u5916\u8d38\u7f51\u7ad9\u3001\u4f01\u4e1a\u5b98\u7f51\u6216\u591a\u4e2a WordPress \u7ad9\u70b9\u7684\u670d\u52a1\u5668\uff0c\u63a8\u8350\u628a systemd \u8d44\u6e90\u9650\u5236\u3001\u5e94\u7528\u81ea\u8eab\u5e76\u53d1\u914d\u7f6e\u3001\u5907\u4efd\u7a97\u53e3\u548c\u544a\u8b66\u7b56\u7565\u653e\u5728\u540c\u4e00\u4efd\u8fd0\u7ef4\u6e05\u5355\u91cc\u3002\u8fd9\u6837\u5373\u4f7f\u67d0\u4e2a\u670d\u52a1\u51fa\u95ee\u9898\uff0c\u4f60\u4e5f\u6709\u66f4\u660e\u786e\u7684\u8fb9\u754c\u3001\u65e5\u5fd7\u548c\u56de\u6eda\u8def\u5f84\uff0c\u800c\u4e0d\u662f\u7b49\u6574\u53f0\u670d\u52a1\u5668\u53d8\u6162\u540e\u518d\u88ab\u52a8\u6392\u67e5\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
    \u4ece CPU\u3001\u5185\u5b58\u3001\u8fdb\u7a0b\u6570\u3001\u6587\u4ef6\u53e5\u67c4\u548c IO \u9650\u5236\u5165\u624b\uff0c\u8bb2\u6e05\u5982\u4f55\u7528 systemd \u63a7\u5236\u5355\u4e2a\u670d\u52a1\u7684\u8d44\u6e90\u5360\u7528\uff0c\u964d\u4f4e Linux \u670d\u52a1\u5668\u88ab\u5f02\u5e38\u8fdb\u7a0b\u62d6\u57ae\u7684\u98ce\u9669\u3002<\/p>\n","protected":false},"author":2,"featured_media":32328,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[3822],"tags":[909,4449,4713,4714],"class_list":["post-32332","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-guides","tag-linux","tag-systemd","tag-4713","tag-4714"],"aioseo_notices":[],"jetpack_featured_media_url":"https:\/\/cn.hostease.com\/blog\/wp-content\/uploads\/2026\/08\/systemd-resource-limits-linux-cover.webp","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/posts\/32332","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/comments?post=32332"}],"version-history":[{"count":1,"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/posts\/32332\/revisions"}],"predecessor-version":[{"id":32338,"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/posts\/32332\/revisions\/32338"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/media\/32328"}],"wp:attachment":[{"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/media?parent=32332"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/categories?post=32332"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/tags?post=32332"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}