{"id":15000,"date":"2025-04-18T21:37:53","date_gmt":"2025-04-18T13:37:53","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/15000.html"},"modified":"2025-04-18T21:37:53","modified_gmt":"2025-04-18T13:37:53","slug":"%e6%8f%90%e5%8d%87%e6%9c%8d%e5%8a%a1%e5%99%a8cpu%e5%92%8cmemory%ef%bc%88%e5%86%85%e5%ad%98%ef%bc%89%e5%88%a9%e7%94%a8%e7%8e%87","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/15000.html","title":{"rendered":"\u63d0\u5347\u670d\u52a1\u5668CPU\u548cmemory\uff08\u5185\u5b58\uff09\u5229\u7528\u7387"},"content":{"rendered":"

\u4e00\u3001\u8ba9cpu\u4f7f\u7528\u7387\u9ad8\u8d77\u6765<\/p>\n

1\u3001\u5c06\u4e0b\u9762\u4ee3\u7801\u590d\u5236\u7c98\u8d34\u5230\u76ee\u6807\u670d\u52a1\u5668\u3002\u4fdd\u5b58\u4e3acpu_up.sh<\/p>\n

#!\/usr\/bin\/env bash<\/p>\n

# \u83b7\u53d6\u811a\u672c\u6240\u5728\u76ee\u5f55
\nbase_dir=$(cd `dirname $0`; pwd)<\/p>\n

# \u83b7\u53d6\u5f53\u524dCPU\u4f7f\u7528\u7387（\u5e73\u5747\u503c）
\ncpu_using=$(top -bn 1 | grep '%Cpu(s)' | awk '{print $2}' | awk -F '.' '{print $1}')<\/p>\n

# \u9700\u8981\u8fbe\u5230\u7684CPU\u4f7f\u7528\u7387，\u4ece\u811a\u672c\u53c2\u6570\u83b7\u53d6
\ncpu_used=$1<\/p>\n

# \u5982\u679c\u811a\u672c\u6267\u884c\u6ca1\u6709\u53c2\u6570\u4f20\u5165，\u8fd4\u56de\u811a\u672c\u4f7f\u7528\u65b9\u6cd5\u5e76\u9000\u51fa\u811a\u672c
\nif [ $# -ne 1 ]; then
\n printf "\\\\e[0;34mUSAGE: bash $0 30\\\\e[0m\\\\n"
\n exit 1
\nfi<\/p>\n

# \u5982\u679c\u9700\u8981\u8fbe\u5230\u7684CPU\u4f7f\u7528\u7387\u5c0f\u4e8e\u7b49\u4e8e\u5f53\u524d\u4f7f\u7528\u7387\u5219\u9000\u51fa\u811a\u672c
\nif [[ "${cpu_used}" -le "${cpu_using}" ]]; then
\n echo "Current CPU usage (${cpu_using}%) is already greater than or equal to the target (${cpu_used}%). Exiting."
\n exit 0
\nfi<\/p>\n

# \u83b7\u53d6CPU\u6838\u5fc3\u6570
\ncpu_proc=$(grep -c ^processor \/proc\/cpuinfo)<\/p>\n

# \u8ba1\u7b97\u9700\u8981\u589e\u52a0\u7684CPU\u4f7f\u7528\u7387
\ncpu_status=$(( cpu_used – cpu_using ))<\/p>\n

# \u8ba1\u7b97\u5f53\u524d\u4f7f\u7528\u7684\u7ebf\u7a0b\u6570\u91cf
\ncpu_using_count=$(awk "BEGIN {printf \\\\"%d\\\\", ${cpu_proc} * ${cpu_using} \/ 100}")<\/p>\n

# \u8ba1\u7b97\u9700\u8981\u8fbe\u5230\u7684\u7ebf\u7a0b\u6570\u91cf
\ncpu_used_count=$(awk "BEGIN {printf \\\\"%d\\\\", ${cpu_proc} * ${cpu_used} \/ 100}")<\/p>\n

# \u8ba1\u7b97\u9700\u8981\u589e\u52a0\u7684\u7ebf\u7a0b\u6570\u91cf
\ncpu_num=$(( cpu_used_count – cpu_using_count ))<\/p>\n

# \u6e05\u7a7a\u65e5\u5fd7\u6587\u4ef6
\n> ${base_dir}\/kill_cpu_up.log<\/p>\n

for i in $(seq ${cpu_num})
\ndo
\n (
\n while true
\n do
\n : # \u8fd9\u91cc\u53ef\u4ee5\u7528\u4e00\u4e2a\u65e0\u64cd\u4f5c\u547d\u4ee4\u5360\u4f4d，\u6216\u8005\u6dfb\u52a0\u5b9e\u9645\u9700\u8981\u6267\u884c\u7684\u547d\u4ee4
\n done
\n ) &<\/p>\n

echo "kill $!" >> ${base_dir}\/kill_cpu_up.log 2>&1
\ndone<\/p>\n

echo "Started ${cpu_num} processes to reach the target CPU usage of ${cpu_used}%." <\/p>\n

2\u3001\u5047\u8bbe\u8981\u6c42cpu\u4f7f\u7528\u7387\u4e0d\u80fd\u4f4e\u4e8e30%,\u6267\u884c： sh cpu_up.sh 30<\/p>\n

3\u3001\u5173\u95ed\u811a\u672c，\u5728\u8fd0\u884c\u76ee\u5f55\u4e0b\u4f1a\u751f\u6210kill_cpu_up.log\u3002kill \u6389\u91cc\u9762\u7684\u8fdb\u7a0b\u5c31ok<\/p>\n

\u4e8c\u3001\u8ba9\u5185\u5b58\u4f7f\u7528\u7387\u9ad8\u8d77\u6765（\u4f1a\u5360\u7528\u4e00\u4e9bcpu，\u5982\u679c\u4e5f\u8981\u5347CPU\u4f7f\u7528\u7387\u7684\u8bdd，\u53ef\u4ee5\u5148\u628a\u5185\u5b58\u641e\u8d77\u6765，\u4e0d\u7136\u4f1a\u5f71\u54cdcpu\u7684\u8ba1\u7b97） \u9996\u5148\u5b89\u88c5 stress-ng \u5de5\u5177，\u5b89\u88c5\u65b9\u6cd5\u81ea\u884c\u641c\u7d22：（\u4f7f\u7528stress-ng\u5de5\u5177\u6765\u5206\u914d\u6307\u5b9a\u5927\u5c0f\u7684\u5185\u5b58\u3002stress-ng\u662f\u4e00\u4e2a\u66f4\u73b0\u4ee3\u3001\u529f\u80fd\u66f4\u5f3a\u5927\u7684\u538b\u529b\u6d4b\u8bd5\u5de5\u5177，\u76f8\u6bd4stress\u63d0\u4f9b\u4e86\u66f4\u591a\u7684\u9009\u9879\u548c\u66f4\u597d\u7684\u6027\u80fd\u3002\u5e76\u4e14\u73b0\u5728\u79bb\u7ebf\u5b89\u88c5\u5305\u53ea\u80fd\u4e0b\u8f7d\u5230stress-ng\u5de5\u5177，\u79bb\u7ebf\u5b89\u88c5\u5305\u53ef\u80fd\u53ea\u7528\u6267\u884c\u547d\u4ee4make install\u8fdb\u884c\u5b89\u88c5）<\/p>\n

1\u3001\u4f7f\u7528\u65b9\u6cd5\u548ccpu\u4e00\u6837\u3002\u5c06\u811a\u672c\u4fdd\u5b58\u4e3amemory_up.sh<\/p>\n

\u6ce8\u610f：1.\u811a\u672c\u91cc\u9700\u8981\u81ea\u884c\u8bbe\u7f6estress-ng\u8fd0\u884c\u65f6\u95f4<\/span><\/p>\n

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a02.\u811a\u672c\u91cc\u672a\u8ba1\u7b97\u5f53\u524d\u5df2\u4f7f\u7528\u5185\u5b58，\u8f93\u5165\u7684\u767e\u5206\u6bd4\u6570\u636e，\u662f\u5c06\u8981\u63d0\u5347\u7684\u5185\u5b58\u4f7f\u7528\u91cf<\/span><\/p>\n

#!\/bin\/bash<\/p>\n

# \u68c0\u67e5\u8f93\u5165\u53c2\u6570
\nif [ $# -ne 1 ]; then
\n echo "Usage: $0 <memory_percentage>"
\n exit 1
\nfi<\/p>\n

# \u83b7\u53d6\u8f93\u5165\u53c2\u6570
\nmemory_percentage=$1<\/p>\n

# \u9a8c\u8bc1\u8f93\u5165\u53c2\u6570\u662f\u5426\u4e3a\u6709\u6548\u7684\u6570\u5b57
\nif ! [[ "$memory_percentage" =~ ^[0-9]+([.][0-9]+)?$ ]]; then
\n echo "Error: Memory percentage must be a number."
\n exit 1
\nfi<\/p>\n

# \u8ba1\u7b97\u5185\u5b58\u4f7f\u7528\u91cf
\ntotal_memory=$(free -m | awk '\/^Mem:\/{print $2}')
\ntarget_memory=$((total_memory * memory_percentage \/ 100))<\/p>\n

# \u68c0\u67e5\u76ee\u6807\u5185\u5b58\u662f\u5426\u5408\u7406
\nif [ "$target_memory" -le 0 ] || [ "$target_memory" -gt "$total_memory" ]; then
\n echo "Error: Target memory (${target_memory}MB) is out of range (0-${total_memory}MB)."
\n exit 1
\nfi<\/p>\n

# \u5206\u914d\u5185\u5b58
\necho "Allocating approximately ${target_memory}MB of memory…"<\/p>\n

# \u4f7f\u7528 stress-ng \u5de5\u5177\u6765\u5206\u914d\u5185\u5b58–1\u4e2a\u7ebf\u7a0b，\u6301\u7eed\u65f6\u95f44800\u5c0f\u65f6（\u65f6\u95f4\u81ea\u884c\u8bbe\u7f6e）
\nstress-ng –vm-bytes "${target_memory}M" –vm-keep -vm 1 –timeout 4800h &<\/p>\n

# \u8bb0\u5f55\u540e\u53f0\u8fdb\u7a0b\u7684PID
\nstress_pid=$!<\/p>\n

# \u8f93\u51fa\u63d0\u793a\u4fe1\u606f
\necho "Press Ctrl+C to stop memory consumption."<\/p>\n

# \u6301\u7eed\u8fd0\u884c，\u76f4\u5230\u624b\u52a8\u4e2d\u65ad\u811a\u672c
\ntrap "kill $stress_pid" SIGINT SIGTERM
\nwait $stress_pid <\/p>\n

2\u3001\u5047\u8bbe\u8981\u6c42\u5185\u5b58\u4f7f\u7528\u7387\u63d0\u534730%,\u5219\u6267\u884c：（\u540e\u53f0\u8fd0\u884c） nohup sh memory_up.sh 30 &<\/p>\n

\u5185\u5b58\u4f7f\u7528\u7387\u76f4\u63a5\u63d0\u534730%\u3002<\/p>\n

\u5173\u95ed\u65b9\u6cd5:（top\u540e\u63091\u548cC\u6309\u952e，\u80fd\u770b\u5230\u5f88\u591a\u4fe1\u606f） top \u627e\u5230memory_up.sh\u7684pid（\u6216\u8005\u5728nohup.out\u65e5\u5fd7\u91cc\u627e\u5230pid） kill pid<\/p>\n<\/p>\n

\u4e09\u3001linux\u4e0a\u6267\u884c\u811a\u672c\u62a5\u9519\u89e3\u51b3\u65b9\u6cd5<\/p>\n

$\u2018\\\\r\u2018: command not found\u7684\u89e3\u51b3\u65b9\u6cd5<\/p>\n

\u51fa\u73b0\u8fd9\u6837\u7684\u9519\u8bef，\u662f\u56e0\u4e3aShell\u811a\u672c\u5728Windows\u7cfb\u7edf\u7f16\u5199\u65f6，\u6bcf\u884c\u7ed3\u5c3e\u662f\\\\r\\\\n，\u800c\u5728Linux\u7cfb\u7edf\u4e2d\u884c\u6bcf\u884c\u7ed3\u5c3e\u662f\\\\n，\u6240\u4ee5\u5728Linux\u7cfb\u7edf\u4e2d\u8fd0\u884c\u811a\u672c\u65f6，\u4f1a\u8ba4\u4e3a\\\\r\u662f\u4e00\u4e2a\u5b57\u7b26，\u5bfc\u81f4\u8fd0\u884c\u9519\u8bef\u3002<\/p>\n

\u53bb\u9664Shell\u811a\u672c\u7684\\\\r\u5b57\u7b26：<\/p>\n

\u65b9\u6cd51 sed -i 's\/\\\\r\/\/' one-more.sh<\/p>\n

\u65b9\u6cd52 dos2unix one-more.sh<\/p>\n

\u8f93\u51fa\u5982\u4e0b：<\/p>\n

dos2unix: converting file one-more.sh to Unix format …<\/p>\n","protected":false},"excerpt":{"rendered":"

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