{"id":81575,"date":"2026-07-25T02:59:18","date_gmt":"2026-07-24T18:59:18","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/81575.html"},"modified":"2026-07-25T02:59:18","modified_gmt":"2026-07-24T18:59:18","slug":"%e6%b7%b1%e5%85%a5%e7%90%86%e8%a7%a3linux-cgroup-v2%ef%bc%9acpu%e4%b8%8e%e5%86%85%e5%ad%98%e8%b5%84%e6%ba%90%e9%9a%94%e7%a6%bb%e6%9c%ba%e5%88%b6%e5%8f%8a%e7%94%9f%e4%ba%a7%e7%8e%af%e5%a2%83%e8%b0%83","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/81575.html","title":{"rendered":"\u6df1\u5165\u7406\u89e3Linux Cgroup v2\uff1aCPU\u4e0e\u5185\u5b58\u8d44\u6e90\u9694\u79bb\u673a\u5236\u53ca\u751f\u4ea7\u73af\u5883\u8c03\u4f18\u6307\u5357"},"content":{"rendered":"

\u6df1\u5165\u7406\u89e3Linux Cgroup v2：CPU\u4e0e\u5185\u5b58\u8d44\u6e90\u9694\u79bb\u673a\u5236\u53ca\u751f\u4ea7\u73af\u5883\u8c03\u4f18\u6307\u5357<\/h2>\n

\u4e00\u3001Cgroup v2\u7684\u8bbe\u8ba1\u6f14\u8fdb\u4e0e\u6838\u5fc3\u6982\u5ff5<\/h3>\n

Control Group(Cgroup)\u662fLinux\u5185\u6838\u7684\u8d44\u6e90\u9694\u79bb\u4e0e\u63a7\u5236\u673a\u5236\u3002\u5b83\u9650\u5236\u3001\u7edf\u8ba1\u3001\u9694\u79bb\u8fdb\u7a0b\u7ec4\u7684\u8d44\u6e90\u4f7f\u7528\u3002Cgroup v1\u57282008\u5e74\u5408\u5e76\u5165\u5185\u6838\u3002v2\u57282016\u5e74\u53d1\u5e03\u3002v1\u5b58\u5728\u67b6\u6784\u6027\u95ee\u9898\u3002v2\u4ece\u6839\u672c\u4e0a\u91cd\u65b0\u8bbe\u8ba1\u4e86\u63a7\u5236\u5668\u6a21\u578b\u3002<\/p>\n

Cgroup v1\u7684\u6700\u5927\u95ee\u9898\u662f\u63a7\u5236\u5668\u72ec\u7acb\u7ba1\u7406\u3002\u6bcf\u4e2a\u5b50\u7cfb\u7edf(cpu\u3001memory\u3001blkio)\u72ec\u7acb\u7684\u5c42\u7ea7\u7ed3\u6784\u3002\u540c\u4e00\u4e2a\u8fdb\u7a0b\u7ec4\u5728\u4e0d\u540c\u63a7\u5236\u5668\u4e2d\u53ef\u80fd\u4f4d\u4e8e\u4e0d\u540c\u4f4d\u7f6e\u3002\u7ba1\u7406\u590d\u6742\u4e14\u5bb9\u6613\u51fa\u9519\u3002v2\u91c7\u7528\u7edf\u4e00\u5c42\u7ea7\u6a21\u578b\u3002\u6240\u6709\u63a7\u5236\u5668\u5728\u540c\u4e00\u68f5\u6811\u4e0a\u8fd0\u4f5c\u3002\u6bcf\u4e2acgroup\u8282\u70b9\u53ef\u4ee5\u540c\u65f6\u7ba1\u7406\u591a\u79cd\u8d44\u6e90\u3002<\/p>\n

Cgroup v2\u5f15\u5165\u4e86\u4e09\u4e2a\u6838\u5fc3\u8bbe\u8ba1\u6539\u826f\u3002\u7b2c\u4e00，\u65e0\u5185\u90e8\u8fdb\u7a0b\u89c4\u5219\u3002\u53ea\u6709\u53f6\u5b50cgroup\u53ef\u4ee5\u5305\u542b\u8fdb\u7a0b\u3002\u975e\u53f6\u5b50\u8282\u70b9\u4ec5\u7528\u4e8e\u8d44\u6e90\u5212\u5206\u3002\u8fd9\u6d88\u9664\u4e86v1\u4e2d\u8fdb\u7a0b\u4e0e\u5b50cgroup\u7684\u5f52\u5c5e\u6b67\u4e49\u3002\u7b2c\u4e8c，\u7edf\u4e00\u5c42\u7ea7\u3002\u6240\u6709\u63a7\u5236\u5668\u6302\u8f7d\u5728\u540c\u4e00\u6587\u4ef6\u7cfb\u7edf\u4e0a\u3002\u901a\u8fc7cgroup.controllers\u67e5\u770b\u5f53\u524d\u8282\u70b9\u542f\u7528\u7684\u63a7\u5236\u5668\u3002\u901a\u8fc7cgroup.subtree_control\u63a7\u5236\u5b50\u8282\u70b9\u53ef\u7528\u7684\u63a7\u5236\u5668\u3002\u7b2c\u4e09，\u57fa\u4e8e\u538b\u529b\u7684\u8d44\u6e90\u7ba1\u7406\u3002memory\u63a7\u5236\u5668\u5f15\u5165PSI(Pressure Stall Information)\u3002\u5728\u5185\u5b58\u538b\u529b\u5347\u9ad8\u65f6\u4e3b\u52a8\u8282\u5236\u8d44\u6e90\u5206\u914d\u3002<\/p>\n

graph TD
\n A[Cgroup v2 \u7edf\u4e00\u5c42\u7ea7\u6839] –> B[system.slice]
\n A –> C[user.slice]
\n A –> D[machine.slice]
\n B –> E[sshd.service]
\n B –> F[cron.service]
\n C –> G[user-1000.slice]
\n C –> H[user-1001.slice]
\n D –> I[kubepods.slice]
\n I –> J[burstable]
\n I –> K[guaranteed]
\n J –> L[pod-abc123]
\n J –> M[pod-def456]
\n K –> N[pod-ghi789]<\/p>\n

\u4e8c\u3001CPU\u8d44\u6e90\u9694\u79bb\u673a\u5236\u6df1\u5ea6\u89e3\u6790<\/h3>\n

Cgroup v2\u7684CPU\u63a7\u5236\u5668\u63d0\u4f9b\u4e24\u79cd\u8d44\u6e90\u5206\u914d\u6a21\u578b\u3002\u7b2c\u4e00\u79cd\u662f\u6743\u91cd\u6a21\u578b(cpu.weight)\u3002\u7b2c\u4e8c\u79cd\u662f\u5e26\u5bbd\u9650\u5236\u6a21\u578b(cpu.max)\u3002<\/p>\n

\u6743\u91cd\u6a21\u578b\u5b9a\u4e49cgroup\u7684\u76f8\u5bf9CPU\u4efd\u989d\u3002\u9ed8\u8ba4\u6743\u91cd\u4e3a100\u3002\u53d6\u503c\u8303\u56f41\u523010000\u3002\u5f53CPU\u8d44\u6e90\u5145\u8db3\u65f6\u6743\u91cd\u4e0d\u8d77\u4f5c\u7528\u3002\u6240\u6709cgroup\u53ef\u4ee5\u8d85\u8fc7\u6743\u91cd\u4f7f\u7528CPU\u3002\u5f53CPU\u8d44\u6e90\u7ade\u4e89\u65f6\u3002\u6309\u6743\u91cd\u6bd4\u4f8b\u5206\u914dCPU\u65f6\u95f4\u3002\u8ba1\u7b97\u516c\u5f0f\u4e3a：\u67d0cgroup\u7684CPU\u4efd\u989d = \u8be5cgroup\u6743\u91cd \/ \u6240\u6709\u6d3b\u8dc3cgroup\u6743\u91cd\u4e4b\u548c\u3002<\/p>\n

\u5e26\u5bbd\u9650\u5236\u6a21\u578b\u901a\u8fc7cpu.max\u6587\u4ef6\u63a7\u5236\u3002\u683c\u5f0f\u4e3a$MAX $PERIOD\u3002$MAX\u662f\u5468\u671f\u5185\u5141\u8bb8\u7684CPU\u5fae\u79d2\u6570\u3002$PERIOD\u662f\u8c03\u5ea6\u5468\u671f，\u9ed8\u8ba4100000\u5fae\u79d2(100ms)\u3002\u4f8b\u5982cpu.max = "50000 100000"\u8868\u793a\u6bcf100ms\u5141\u8bb8\u4f7f\u752850ms CPU\u3002\u5373\u9650\u5236CPU\u4f7f\u7528\u7387\u4e3a50%\u3002\u8bbe\u7f6e\u4e3a"max 100000"\u8868\u793a\u4e0d\u9650\u5236\u3002<\/p>\n

CPU\u63a7\u5236\u5668\u8fd8\u63d0\u4f9bcpu.stat\u7edf\u8ba1\u6587\u4ef6\u3002\u5305\u542b\u4ee5\u4e0b\u5173\u952e\u6307\u6807\u3002usage_usec：\u7d2f\u8ba1CPU\u4f7f\u7528\u65f6\u95f4\u3002user_usec\u548csystem_usec\u5206\u522b\u8bb0\u5f55\u7528\u6237\u6001\u548c\u5185\u6838\u6001\u65f6\u95f4\u3002nr_periods\u548cnr_throttled\u8bb0\u5f55\u5e26\u5bbd\u9650\u5236\u7684\u5468\u671f\u6570\u548c\u88ab\u9650\u5236\u6b21\u6570\u3002throttled_usec\u8bb0\u5f55\u88ab\u9650\u5236\u7684\u603b\u65f6\u95f4\u3002\u8fd9\u4e9b\u6307\u6807\u662f\u6027\u80fd\u5206\u6790\u548c\u8d44\u6e90\u89c4\u5212\u7684\u91cd\u8981\u4f9d\u636e\u3002<\/p>\n

#!\/bin\/bash
\n# \u521b\u5efa\u548c\u914d\u7f6eCgroup v2\u7684CPU\u9650\u5236<\/p>\n

CGROUP_NAME="myapp"
\nCGROUP_PATH="\/sys\/fs\/cgroup\/$CGROUP_NAME"<\/p>\n

# 1. \u521b\u5efacgroup\u76ee\u5f55
\necho "\u521b\u5efacgroup: $CGROUP_PATH"
\nif ! mkdir -p "$CGROUP_PATH" 2>\/dev\/null; then
\n echo "[\u9519\u8bef] \u521b\u5efacgroup\u76ee\u5f55\u5931\u8d25，\u53ef\u80fd\u662f\u6743\u9650\u4e0d\u8db3"
\n exit 1
\nfi<\/p>\n

# 2. \u542f\u7528CPU\u63a7\u5236\u5668（\u9700\u8981\u4ece\u7236\u8282\u70b9\u5411\u4e0b\u4f20\u9012\u63a7\u5236\u5668）
\n# \u5728\u6839cgroup\u4e2d\u542f\u7528cpu\u63a7\u5236\u5668
\necho "+cpu" > \/sys\/fs\/cgroup\/cgroup.subtree_control 2>\/dev\/null || \\\\
\n echo "[\u63d0\u793a] \u7236\u8282\u70b9\u5df2\u542f\u7528cpu\u63a7\u5236\u5668\u6216\u9700\u8981root\u6743\u9650"<\/p>\n

# 3. \u8bbe\u7f6eCPU\u6743\u91cd（\u9ed8\u8ba4100，\u8868\u793a\u4e0e\u63a7\u5236\u7ec4\u5171\u4eabCPU）
\necho "100" > "$CGROUP_PATH\/cpu.weight"
\necho "CPU\u6743\u91cd\u5df2\u8bbe\u7f6e\u4e3a: $(cat $CGROUP_PATH\/cpu.weight)"<\/p>\n

# 4. \u8bbe\u7f6eCPU\u5e26\u5bbd\u9650\u5236（\u6bcf100ms\u5468\u671f\u5185\u6700\u591a\u4f7f\u752850ms = 50% CPU）
\necho "50000 100000" > "$CGROUP_PATH\/cpu.max"
\necho "CPU\u5e26\u5bbd\u9650\u5236\u5df2\u8bbe\u7f6e\u4e3a: $(cat $CGROUP_PATH\/cpu.max)"<\/p>\n

# 5. \u5c06\u8fdb\u7a0b\u52a0\u5165cgroup
\nAPP_PID=$1
\nif [ -z "$APP_PID" ]; then
\n echo "\u7528\u6cd5: $0 <\u8fdb\u7a0bPID>"
\n exit 1
\nfi<\/p>\n

# \u9a8c\u8bc1PID\u662f\u5426\u5b58\u5728
\nif ! kill -0 "$APP_PID" 2>\/dev\/null; then
\n echo "[\u9519\u8bef] \u8fdb\u7a0bPID ${APP_PID} \u4e0d\u5b58\u5728"
\n exit 1
\nfi<\/p>\n

echo "$APP_PID" > "$CGROUP_PATH\/cgroup.procs"
\necho "\u8fdb\u7a0b ${APP_PID} \u5df2\u79fb\u5165cgroup"<\/p>\n

# 6. \u67e5\u770bCPU\u4f7f\u7528\u7edf\u8ba1
\necho "=== CPU\u4f7f\u7528\u7edf\u8ba1 ==="
\nif [ -f "$CGROUP_PATH\/cpu.stat" ]; then
\n cat "$CGROUP_PATH\/cpu.stat" | while read -r key value; do
\n case "$key" in
\n usage_usec)
\n echo "\u7d2f\u8ba1CPU\u4f7f\u7528: $((value \/ 1000000)) \u79d2"
\n ;;
\n nr_throttled)
\n echo "\u88ab\u9650\u5236\u6b21\u6570: $value"
\n ;;
\n throttled_usec)
\n echo "\u88ab\u9650\u5236\u603b\u65f6\u95f4: $((value \/ 1000)) \u6beb\u79d2"
\n ;;
\n esac
\n done
\nfi<\/p>\n

\u4e09\u3001\u5185\u5b58\u8d44\u6e90\u9694\u79bb\u4e0eOOM\u63a7\u5236\u673a\u5236<\/h3>\n

Cgroup v2\u7684memory\u63a7\u5236\u5668\u63d0\u4f9b\u5185\u5b58\u4f7f\u7528\u4e0a\u9650\u3001OOM\u884c\u4e3a\u63a7\u5236\u3001\u4ee5\u53ca\u5185\u5b58\u538b\u529b\u611f\u77e5\u529f\u80fd\u3002<\/p>\n

memory.max\u8bbe\u7f6e\u786c\u6027\u5185\u5b58\u4e0a\u9650\u3002\u5f53cgroup\u5185\u5b58\u4f7f\u7528\u8d85\u8fc7\u8be5\u503c\u65f6\u3002\u89e6\u53d1OOM Killer\u56de\u6536\u5185\u5b58\u3002\u8bbe\u7f6e\u4e3amax\u8868\u793a\u4e0d\u9650\u5236\u3002memory.high\u8bbe\u7f6e\u8f6f\u6027\u5185\u5b58\u4e0a\u9650\u3002\u8d85\u8fc7\u65f6\u89e6\u53d1\u5185\u5b58\u56de\u6536\u4f46\u4e0d\u76f4\u63a5OOM\u3002\u8fdb\u7a0b\u8fd0\u884c\u53d8\u6162\u3002\u76f4\u5230\u5185\u5b58\u964d\u5230high\u503c\u4ee5\u4e0b\u3002memory.low\u662f\u5185\u5b58\u4fdd\u62a4\u4e0b\u9650\u3002\u5728\u7cfb\u7edf\u5185\u5b58\u538b\u529b\u4e0b\u3002\u5c3d\u529b\u4fdd\u8bc1cgroup\u7684low\u503c\u4e0d\u88ab\u56de\u6536\u3002<\/p>\n

memory.current\u663e\u793a\u5f53\u524d\u5185\u5b58\u7528\u91cf\u3002memory.stat\u63d0\u4f9b\u8be6\u7ec6\u7684\u5185\u5b58\u7edf\u8ba1\u3002\u5305\u62ecanon(\u533f\u540d\u9875)\u3001file(\u6587\u4ef6\u9875)\u3001slab(\u5185\u6838slab\u5206\u914d)\u3001kernel_stack(\u5185\u6838\u6808)\u7b49\u3002\u5206\u6790\u8fd9\u4e9b\u6307\u6807\u53ef\u4ee5\u5b9a\u4f4d\u5185\u5b58\u6d88\u8017\u7684\u6839\u6e90\u3002\u4f8b\u5982file\u503c\u8fc7\u9ad8\u8bf4\u660e\u6709\u5927\u91cf\u9875\u7f13\u5b58\u3002\u53ef\u80fd\u662fIO\u5bc6\u96c6\u578b\u5e94\u7528\u3002<\/p>\n

OOM\u63a7\u5236\u901a\u8fc7memory.oom.group\u548cmemory.events\u5b9e\u73b0\u3002memory.oom.group\u4e3a1\u65f6\u3002cgroup\u5185\u4efb\u4e00\u8fdb\u7a0b\u89e6\u53d1OOM\u3002\u6574\u4e2acgroup\u88ab\u6574\u4f53Kill\u3002\u8fd9\u5bf9\u4e8e\u5bb9\u5668\u573a\u666f\u7279\u522b\u91cd\u8981\u3002\u907f\u514dPod\u90e8\u5206\u8fdb\u7a0b\u88abKill\u5bfc\u81f4\u72b6\u6001\u4e0d\u4e00\u81f4\u3002memory.events\u8bb0\u5f55\u4e86OOM\u4e8b\u4ef6\u3001OOM Kill\u6b21\u6570\u7b49\u3002<\/p>\n

\u5185\u5b58\u538b\u529b\u7684\u7cbe\u7ec6\u5316\u63a7\u5236\u4f9d\u8d56PSI\u3002memory.pressure\u6587\u4ef6\u66b4\u9732\u5185\u5b58\u538b\u529b\u6307\u6807\u3002\u5206\u4e3asome\u548cfull\u4e24\u4e2a\u7ea7\u522b\u3002some\u8868\u793a\u90e8\u5206\u4efb\u52a1\u53d7\u5185\u5b58\u538b\u529b\u5f71\u54cd\u3002full\u8868\u793a\u6240\u6709\u4efb\u52a1\u90fd\u53d7\u5f71\u54cd\u3002\u76d1\u63a7PSI\u6307\u6807\u53ef\u4ee5\u5b9e\u73b0\u5185\u5b58\u538b\u529b\u7684\u63d0\u524d\u9884\u8b66\u3002\u5728OOM\u53d1\u751f\u4e4b\u524d\u91c7\u53d6\u5e72\u9884\u63aa\u65bd\u3002<\/p>\n

\u56db\u3001\u751f\u4ea7\u73af\u5883\u8c03\u4f18\u5b9e\u6218\u6307\u5357<\/h3>\n

\u57fa\u4e8eCgroup v2\u7684\u751f\u4ea7\u73af\u5883\u8c03\u4f18\u9700\u8981\u517c\u987e\u8d44\u6e90\u5229\u7528\u7387\u548c\u5e94\u7528\u7a33\u5b9a\u6027\u3002<\/p>\n

CPU\u8c03\u4f18\u7b56\u7565\u3002\u5bf9\u4e8eKubernetes\u96c6\u7fa4\u3002Pod\u7684CPU request\u6620\u5c04\u4e3acpu.weight\u3002CPU limit\u6620\u5c04\u4e3acpu.max\u7684\u5e26\u5bbd\u9650\u5236\u3002Guaranteed QoS\u7684Pod\u5e94\u8be5\u8bbe\u7f6ecpu.max = "max"\u52a0\u5408\u7406\u7684cpu.weight\u3002\u907f\u514d\u65e0\u610f\u4e49\u7684CPU\u9650\u6d41\u3002Burstable QoS\u7684Pod\u4f7f\u7528cpu.max\u9650\u5236\u5cf0\u503c\u3002\u9632\u6b62\u7a81\u53d1\u6d41\u91cf\u5f71\u54cd\u540c\u8282\u70b9\u5176\u4ed6Pod\u3002\u5173\u952e\u6838\u5fc3\u670d\u52a1\u8bbe\u7f6e\u8f83\u9ad8\u7684cpu.weight(\u5982500-1000)\u3002\u786e\u4fddCPU\u7ade\u4e89\u65f6\u4f18\u5148\u83b7\u5f97\u8d44\u6e90\u3002<\/p>\n

\u5185\u5b58\u8c03\u4f18\u7b56\u7565\u3002Guaranteed Pod\u8bbe\u7f6ememory.max = memory.request\u3002\u786e\u4fdd\u5185\u5b58\u4e0d\u4f1a\u88ab\u7cfb\u7edf\u56de\u6536\u3002Burstable Pod\u7684memory.max = limit\u3002memory.high\u5efa\u8bae\u8bbe\u4e3alimit\u768480%-90%\u3002\u5728\u8fbe\u5230\u786c\u9650\u5236\u4e4b\u524d\u89e6\u53d1\u6e29\u548c\u7684\u5185\u5b58\u56de\u6536\u3002\u5173\u952ePod\u8bbe\u7f6ememory.low\u4fdd\u62a4\u6700\u4f4e\u5185\u5b58\u9700\u6c42\u3002\u5373\u4f7f\u7cfb\u7edf\u6574\u4f53\u5185\u5b58\u7d27\u5f20\u3002\u4e5f\u4fdd\u7559\u5173\u952e\u670d\u52a1\u7684\u57fa\u7840\u8fd0\u884c\u5185\u5b58\u3002<\/p>\n

\u5e38\u89c1\u95ee\u9898\u4e0e\u89e3\u51b3\u3002\u95ee\u9898\u4e00：\u5bb9\u5668\u9891\u7e41OOM Kill\u4f46\u5b9e\u9645\u6709\u53ef\u7528\u5185\u5b58\u3002\u539f\u56e0\u662fmemory.high\u89e6\u53d1\u540e\u3002\u5185\u5b58\u56de\u6536\u6548\u7387\u4f4e\u3002\u8c03\u6574\u65b9\u6848：\u964d\u4f4ememory.high\u9608\u503c\u3002\u7ed9\u5185\u5b58\u56de\u6536\u7559\u8db3\u7f13\u51b2\u3002\u95ee\u9898\u4e8c：CPU\u9650\u5236\u5bfc\u81f4\u5ef6\u8fdf\u6296\u52a8\u3002\u539f\u56e0\u662fcpu.max\u89e6\u53d1\u7684throttling\u6253\u65ad\u4efb\u52a1\u6267\u884c\u3002\u8c03\u6574\u65b9\u6848：\u5ef6\u957fperiod\u5230200ms\u3002\u7ed9\u4e88\u66f4\u957f\u7684\u6267\u884c\u7a97\u53e3\u3002\u95ee\u9898\u4e09：cgroup v2\u4e0ev1\u6df7\u7528\u5bfc\u81f4\u884c\u4e3a\u4e0d\u786e\u5b9a\u3002\u89e3\u51b3\u65b9\u6848：\u8fc1\u79fb\u5230\u7eafv2\u73af\u5883\u3002\u4f7f\u7528systemd.unified_cgroup_hierarchy=1\u5185\u6838\u53c2\u6570\u3002<\/p>\n

#!\/bin\/bash
\n# Cgroup v2 \u8d44\u6e90\u4f7f\u7528\u76d1\u63a7\u811a\u672c<\/p>\n

CGROUP_BASE="\/sys\/fs\/cgroup"
\nMONITOR_INTERVAL=5 # \u76d1\u63a7\u95f4\u9694(\u79d2)
\nALERT_CPU_THROTTLE=10 # CPU\u9650\u6d41\u544a\u8b66\u9608\u503c(\u6b21)
\nALERT_MEM_HIGH=85 # \u5185\u5b58\u4f7f\u7528\u7387\u544a\u8b66\u9608\u503c(%)<\/p>\n

monitor_cgroup() {
\n local cg_path="$1"
\n local cg_name="$2"<\/p>\n

# CPU\u7edf\u8ba1
\n if [ -f "$cg_path\/cpu.stat" ]; then
\n cpu_usage=$(grep usage_usec "$cg_path\/cpu.stat" | awk '{print $2}')
\n cpu_throttled=$(grep nr_throttled "$cg_path\/cpu.stat" | awk '{print $2}')
\n echo "[$cg_name] CPU\u4f7f\u7528: $((cpu_usage \/ 1000000))\u79d2 | \u9650\u6d41\u6b21\u6570: $cpu_throttled"
\n if [ "$cpu_throttled" -gt "$ALERT_CPU_THROTTLE" ]; then
\n echo " [\u544a\u8b66] CPU\u9650\u6d41\u6b21\u6570\u8fc7\u9ad8! ($cpu_throttled\u6b21)"
\n fi
\n fi<\/p>\n

# \u5185\u5b58\u7edf\u8ba1
\n if [ -f "$cg_path\/memory.current" ] && [ -f "$cg_path\/memory.max" ]; then
\n mem_current=$(cat "$cg_path\/memory.current")
\n mem_max=$(cat "$cg_path\/memory.max")
\n if [ "$mem_max" != "max" ]; then
\n mem_usage=$(( mem_current * 100 \/ mem_max ))
\n echo "[$cg_name] \u5185\u5b58: $((mem_current\/1048576))MB \/ $((mem_max\/1048576))MB (${mem_usage}%)"
\n if [ "$mem_usage" -gt "$ALERT_MEM_HIGH" ]; then
\n echo " [\u544a\u8b66] \u5185\u5b58\u4f7f\u7528\u7387\u8d85\u8fc7${ALERT_MEM_HIGH}%!"
\n fi
\n else
\n echo "[$cg_name] \u5185\u5b58: $((mem_current\/1048576))MB (\u65e0\u4e0a\u9650\u9650\u5236)"
\n fi
\n fi<\/p>\n

# \u5185\u5b58\u4e8b\u4ef6(OOM)
\n if [ -f "$cg_path\/memory.events" ]; then
\n oom_count=$(grep oom "$cg_path\/memory.events" | awk '{print $2}')
\n if [ "${oom_count:-0}" -gt 0 ]; then
\n echo " [\u4e25\u91cd] OOM\u4e8b\u4ef6\u603b\u6570: $oom_count"
\n fi
\n fi
\n echo "—"
\n}<\/p>\n

echo "=== Cgroup v2 \u8d44\u6e90\u76d1\u63a7 (\u6bcf${MONITOR_INTERVAL}\u79d2) ==="
\necho "\u6309 Ctrl+C \u9000\u51fa\u76d1\u63a7"
\necho ""<\/p>\n

while true; do
\n echo "— \u76d1\u63a7\u65f6\u95f4: $(date '+%H:%M:%S') —"
\n # \u76d1\u63a7Kubernetes Pod\u7684cgroup
\n for pod_cg in "$CGROUP_BASE"\/kubepods.slice\/kubepods-burstable.slice\/kubepods-burstable-pod*\/; do
\n [ -d "$pod_cg" ] || continue
\n pod_name=$(basename "$pod_cg")
\n monitor_cgroup "$pod_cg" "$pod_name"
\n done
\n sleep "$MONITOR_INTERVAL"
\ndone<\/p>\n

\u6027\u80fd\u57fa\u51c6\u6d4b\u8bd5\u5efa\u8bae\u3002\u4e0a\u7ebf\u524d\u5728\u9884\u751f\u4ea7\u73af\u5883\u5b8c\u6210\u4ee5\u4e0b\u6d4b\u8bd5\u3002CPU\u5bc6\u96c6\u578b\u8d1f\u8f7d\u4e0b\u9a8c\u8bc1cpu.weight\u7684\u9694\u79bb\u6548\u679c\u3002IO\u5bc6\u96c6\u578b\u8d1f\u8f7d\u4e0b\u6d4b\u8bd5memory.high\u7684\u56de\u6536\u884c\u4e3a\u3002\u6a21\u62df\u8282\u70b9\u5185\u5b58\u538b\u529b\u4e0b\u9a8c\u8bc1memory.low\u7684\u4fdd\u62a4\u6548\u679c\u3002\u6d4b\u91cfcpu.max\u4e0d\u540cperiod\u503c\u5bf9P99\u5ef6\u8fdf\u7684\u5f71\u54cd\u3002<\/p>\n

\u4e94\u3001\u603b\u7ed3<\/h3>\n

Cgroup v2\u901a\u8fc7\u7edf\u4e00\u5c42\u7ea7\u6a21\u578b\u89e3\u51b3\u4e86v1\u7684\u67b6\u6784\u7f3a\u9677\u3002CPU\u63a7\u5236\u65b9\u9762，weight\u63d0\u4f9b\u76f8\u5bf9\u4efd\u989d，cpu.max\u63d0\u4f9b\u7edd\u5bf9\u5e26\u5bbd\u9650\u5236\u3002\u4e24\u8005\u7ed3\u5408\u5b9e\u73b0\u7cbe\u7ec6\u5316\u7684CPU\u8d44\u6e90\u7ba1\u63a7\u3002\u5185\u5b58\u63a7\u5236\u65b9\u9762，memory.max\/high\/low\u6784\u6210\u4e09\u7ea7\u5185\u5b58\u7ba1\u7406\u3002\u914d\u5408OOM\u63a7\u5236\u548cPSI\u538b\u529b\u611f\u77e5\u3002\u5728\u8d44\u6e90\u5229\u7528\u7387\u548c\u7a33\u5b9a\u6027\u4e4b\u95f4\u627e\u5230\u5e73\u8861\u3002<\/p>\n

\u751f\u4ea7\u73af\u5883\u8c03\u4f18\u7684\u6838\u5fc3\u539f\u5219：Guaranteed Pod\u4e0d\u8bbe\u7f6eCPU limit，\u907f\u514d\u65e0\u610f\u4e49\u7684\u9650\u6d41\u3002Burstable Pod\u8bbe\u7f6e\u5408\u7406\u7684cpu.max\u3002\u5185\u5b58\u7684memory.high\u4f5c\u4e3a\u7f13\u51b2\u5c42\u3002\u9632\u6b62\u786c\u6027OOM Kill\u5f71\u54cd\u4e1a\u52a1\u3002\u76d1\u63a7cpu.stat\u548cmemory.events\u7684\u6307\u6807\u53d8\u5316\u8d8b\u52bf\u3002\u63d0\u524d\u53d1\u73b0\u8d44\u6e90\u538b\u529b\u3002<\/p>\n

Cgroup v2\u5df2\u6210\u4e3a\u5bb9\u5668\u8fd0\u884c\u65f6\u7684\u9ed8\u8ba4\u63a7\u5236\u65b9\u5f0f\u3002containerd 1.4+\u548cCRI-O 1.20+\u5747\u9ed8\u8ba4\u4f7f\u7528v2\u3002\u5185\u6838\u9ed8\u8ba4\u542f\u7528cgroup v2\u5df2\u6210\u4e3a\u4e3b\u6d41\u53d1\u884c\u7248\u7684\u6807\u51c6\u3002\u5efa\u8bae\u5c3d\u65e9\u5b8c\u6210\u4ecev1\u5230v2\u7684\u8fc1\u79fb\u3002\u4eab\u53d7\u7edf\u4e00\u5c42\u7ea7\u6a21\u578b\u5e26\u6765\u7684\u7ba1\u7406\u7b80\u5316\u548c\u6027\u80fd\u4f18\u5316\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

\u6df1\u5165\u7406\u89e3Linux Cgroup v2：CPU\u4e0e\u5185\u5b58\u8d44\u6e90\u9694\u79bb\u673a\u5236\u53ca\u751f\u4ea7\u73af\u5883\u8c03\u4f18\u6307\u5357
\n\u4e00\u3001Cgroup v2\u7684\u8bbe\u8ba1\u6f14\u8fdb\u4e0e\u6838\u5fc3\u6982\u5ff5
\nControl Group(Cgroup)\u662fLinux\u5185\u6838\u7684\u8d44\u6e90\u9694\u79bb\u4e0e\u63a7\u5236\u673a\u5236\u3002\u5b83\u9650\u5236\u3001\u7edf\u8ba1\u3001\u9694\u79bb\u8fdb\u7a0b\u7ec4\u7684\u8d44\u6e90\u4f7f\u7528\u3002Cgroup v1\u57282008\u5e74\u5408\u5e76\u5165\u5185\u6838\u3002v2\u57282016\u5e74\u53d1\u5e03\u3002v1\u5b58\u5728\u67b6\u6784\u6027\u95ee\u9898\u3002v2\u4ece\u6839\u672c\u4e0a\u91cd\u65b0\u8bbe\u8ba1\u4e86\u63a7\u5236\u5668\u6a21\u578b\u3002
\nCgroup v1\u7684\u6700\u5927\u95ee\u9898\u662f\u63a7\u5236\u5668\u72ec\u7acb\u7ba1\u7406\u3002\u6bcf\u4e2a\u5b50\u7cfb\u7edf(cpu\u3001memory\u3001blkio)\u72ec\u7acb\u7684\u5c42\u7ea7<\/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":[1493,121,1348],"topic":[],"class_list":["post-81575","post","type-post","status-publish","format-standard","hentry","category-server","tag-k8s","tag-121","tag-1348"],"yoast_head":"\n\u6df1\u5165\u7406\u89e3Linux Cgroup v2\uff1aCPU\u4e0e\u5185\u5b58\u8d44\u6e90\u9694\u79bb\u673a\u5236\u53ca\u751f\u4ea7\u73af\u5883\u8c03\u4f18\u6307\u5357 - \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\/81575.html\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u6df1\u5165\u7406\u89e3Linux Cgroup v2\uff1aCPU\u4e0e\u5185\u5b58\u8d44\u6e90\u9694\u79bb\u673a\u5236\u53ca\u751f\u4ea7\u73af\u5883\u8c03\u4f18\u6307\u5357 - 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