\u901a\u8fc7x=a; while true; do x=xx; done\u547d\u4ee4\u6765\u8017\u5c3d\u5185\u5b58\u5e76\u5f3a\u5236\u89e6\u53d1OOM\uff0clog\u5982\u4e0b\u6240\u793a\u3002<\/p>\n
$ docker run -m 20m --oom-kill-disable=false stress bash -c 'x=a; while true; do x=$x$x$x$x; done'\r\n$ echo $?\r\n137\r\n<\/pre>\n\u901a\u8fc7\u4e0a\u9762\u7684log\u53ef\u4ee5\u770b\u51fa,\u5f53\u5bb9\u5668\u7684\u5185\u5b58\u8017\u5c3d\u7684\u65f6\u5019\uff0c\u5bb9\u5668\u9000\u51fa\uff0c\u9000\u51fa\u7801\u4e3a137\u3002\u56e0\u4e3a\u5bb9\u5668\u8bd5\u56fe\u4f7f\u7528\u8d85\u51fa\u9650\u5b9a\u7684\u5185\u5b58\u91cf\uff0c\u7cfb\u7edf\u4f1a\u89e6\u53d1OOM\uff0c\u5bb9\u5668\u4f1a\u88ab\u6740\u6389\uff0c\u6b64\u65f6under_oom\u7684\u503c\u4e3a1\u3002\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u7cfb\u7edf\u4e2dcgroup\u6587\u4ef6(\/sys\/fs\/cgroup\/memory\/docker\/${container_id}\/memory.oom_control)\u67e5\u770bunder_oom\u7684\u503c\uff08oom_kill_disable 1\uff0cunder_oom 1\uff09\u3002<\/p>\n
\u5f53\u2013oom-kill-disable=true\u7684\u65f6\u5019\uff0c\u5bb9\u5668\u4e0d\u4f1a\u88ab\u6740\u6389\uff0c\u800c\u662f\u88ab\u7cfb\u7edf\u6302\u8d77\u3002<\/p>\n
$ docker run -m 20m --oom-kill-disable=true stress bash -c 'x=a; while true; do x=$x$x$x$x; done'\r\n<\/pre>\n3.1.6 \u2013memory-swappiness int<\/h4>\n
\u8be5\u63a5\u53e3\u53ef\u4ee5\u8bbe\u5b9a\u5bb9\u5668\u4f7f\u7528\u4ea4\u6362\u5206\u533a\u7684\u8d8b\u52bf\uff0c\u53d6\u503c\u8303\u56f4\u4e3a0\u81f3100\u7684\u6574\u6570\uff08\u5305\u542b0\u548c100\uff09\u30020\u8868\u793a\u5bb9\u5668\u4e0d\u4f7f\u7528\u4ea4\u6362\u5206\u533a\uff0c100\u8868\u793a\u5bb9\u5668\u5c3d\u53ef\u80fd\u591a\u7684\u4f7f\u7528\u4ea4\u6362\u5206\u533a\u3002\u5bf9\u5e94\u7684cgroup\u6587\u4ef6\u662f\/sys\/fs\/cgroup\/memory\/memory.swappiness\u3002<\/p>\n
$ docker run --memory-swappiness=100 stress bash -c 'cat \/sys\/fs\/cgroup\/memory\/memory.swappiness'\r\n100\r\n<\/pre>\n3.2 cpu\u5b50\u7cfb\u7edf<\/h3>\n3.2.1 -c, \u2013cpu-shares int<\/h4>\n
\u5bf9\u5e94\u7684cgroup\u6587\u4ef6\u662f\/sys\/fs\/cgroup\/cpu\/cpu.shares\u3002<\/p>\n
$ docker run --rm --cpu-shares 1600 stress bash -c \"cat \/sys\/fs\/cgroup\/cpu\/cpu.shares\"\r\n1600\r\n<\/pre>\n\u901a\u8fc7\u2013cpu-shares\u53ef\u4ee5\u8bbe\u7f6e\u5bb9\u5668\u4f7f\u7528CPU\u7684\u6743\u91cd\uff0c\u8fd9\u4e2a\u6743\u91cd\u8bbe\u7f6e\u662f\u9488\u5bf9CPU\u5bc6\u96c6\u578b\u7684\u8fdb\u7a0b\u7684\u3002\u5982\u679c\u67d0\u4e2a\u5bb9\u5668\u4e2d\u7684\u8fdb\u7a0b\u662f\u7a7a\u95f2\u72b6\u6001\uff0c\u90a3\u4e48\u5176\u5b83\u5bb9\u5668\u5c31\u80fd\u591f\u4f7f\u7528\u672c\u8be5\u7531\u7a7a\u95f2\u5bb9\u5668\u5360\u7528\u7684CPU\u8d44\u6e90\u3002\u4e5f\u5c31\u662f\u8bf4\uff0c\u53ea\u6709\u5f53\u4e24\u4e2a\u6216\u591a\u4e2a\u5bb9\u5668\u90fd\u8bd5\u56fe\u5360\u7528\u6574\u4e2aCPU\u8d44\u6e90\u65f6\uff0c\u2013cpu-shares\u8bbe\u7f6e\u624d\u4f1a\u6709\u6548\u3002
\n\u6211\u4eec\u4f7f\u7528\u5982\u4e0b\u547d\u4ee4\u6765\u521b\u5efa\u4e24\u4e2a\u5bb9\u5668\uff0c\u5b83\u4eec\u7684\u6743\u91cd\u5206\u522b\u4e3a1024\u548c512\u3002<\/p>\n
$ docker run -ti --cpu-shares 1024 --cpuset-cpus=0 stress stress -c 1\r\nstress: info: [1] dispatching hogs: 1 cpu, 0 io, 0 vm, 0 hdd\r\n\r\n$ docker run -ti --cpu-shares 512 --cpuset-cpus=0 stress stress -c 1\r\nstress: info: [1] dispatching hogs: 1 cpu, 0 io, 0 vm, 0 hdd\r\n<\/pre>\n\u4ece\u5982\u4e0btop\u547d\u4ee4\u7684log\u53ef\u4ee5\u770b\u5230\uff0c\u7b2c\u4e00\u4e2a\u5bb9\u5668\u4ea7\u751f\u7684\u8fdb\u7a0bPID\u4e3a13281\uff0cCPU\u5360\u7528\u7387\u4e3a66.9%\uff0c\u7b2c\u4e8c\u4e2a\u5bb9\u5668\u4ea7\u751f\u8fdb\u7a0bPID\u4e3a13372\uff0cCPU\u5360\u7528\u7387\u4e3a33.1%\u3002\u4e24\u4e2a\u5bb9\u5668CPU\u5360\u7528\u7387\u7ea6\u4e3a2:1\u7684\u5173\u7cfb\uff0c\u6d4b\u8bd5\u7ed3\u679c\u4e0e\u9884\u671f\u76f8\u7b26\u3002<\/p>\n
top - 08:02:20 up\u00a0 4:50,\u00a0 3 users,\u00a0 load average: 1.97, 1.21, 0.54\r\nTasks: 126 total,\u00a0\u00a0 3 running, 123 sleeping,\u00a0\u00a0 0 stopped,\u00a0\u00a0 0 zombie\r\n%Cpu(s): 18.7 us,\u00a0 0.1 sy,\u00a0 0.0 ni, 81.2 id,\u00a0 0.0 wa,\u00a0 0.0 hi,\u00a0 0.0 si,\u00a0 0.0 st\r\nKiB Mem :\u00a0 1016488 total,\u00a0\u00a0 730628 free,\u00a0\u00a0\u00a0 81788 used,\u00a0\u00a0 204072 buff\/cache\r\nKiB Swap:\u00a0 1048572 total,\u00a0\u00a0 985112 free,\u00a0\u00a0\u00a0 63460 used.\u00a0\u00a0 772316 avail Mem \r\n\r\n\u00a0 PID USER\u00a0\u00a0\u00a0\u00a0\u00a0 PR\u00a0 NI\u00a0\u00a0\u00a0 VIRT\u00a0\u00a0\u00a0 RES\u00a0\u00a0\u00a0 SHR S\u00a0 %CPU %MEM\u00a0\u00a0\u00a0\u00a0 TIME+ COMMAND\r\n13281 root\u00a0\u00a0\u00a0\u00a0\u00a0 20\u00a0\u00a0 0\u00a0\u00a0\u00a0 7256\u00a0\u00a0\u00a0\u00a0 96\u00a0\u00a0\u00a0\u00a0\u00a0 0 R\u00a0 66.9\u00a0 0.0\u00a0\u00a0 2:40.10 stress\r\n13372 root\u00a0\u00a0\u00a0\u00a0\u00a0 20\u00a0\u00a0 0\u00a0\u00a0\u00a0 7256\u00a0\u00a0\u00a0\u00a0 96\u00a0\u00a0\u00a0\u00a0\u00a0 0 R\u00a0 33.1\u00a0 0.0\u00a0\u00a0 1:13.13 stress\r\n<\/pre>\n3.2.2 \u2013cpu-period int<\/h4>\n
\u5185\u6838\u9ed8\u8ba4\u7684Linux \u8c03\u5ea6CFS\uff08\u5b8c\u5168\u516c\u5e73\u8c03\u5ea6\u5668\uff09\u5468\u671f\u4e3a100ms,\u6211\u4eec\u901a\u8fc7\u2013cpu-period\u6765\u8bbe\u7f6e\u5bb9\u5668\u5bf9CPU\u7684\u4f7f\u7528\u5468\u671f\uff0c\u540c\u65f6\u2013cpu-period\u63a5\u53e3\u9700\u8981\u548c\u2013cpu-quota\u63a5\u53e3\u4e00\u8d77\u6765\u4f7f\u7528\u3002\u2013cpu-quota\u63a5\u53e3\u8bbe\u7f6e\u4e86CPU\u7684\u4f7f\u7528\u503c\u3002CFS(\u5b8c\u5168\u516c\u5e73\u8c03\u5ea6\u5668) \u662f\u5185\u6838\u9ed8\u8ba4\u4f7f\u7528\u7684\u8c03\u5ea6\u65b9\u5f0f\uff0c\u4e3a\u8fd0\u884c\u7684\u8fdb\u7a0b\u5206\u914dCPU\u8d44\u6e90\u3002\u5bf9\u4e8e\u591a\u6838CPU\uff0c\u6839\u636e\u9700\u8981\u8c03\u6574\u2013cpu-quota\u7684\u503c\u3002<\/p>\n
\u5bf9\u5e94\u7684cgroup\u6587\u4ef6\u662f\/sys\/sf\/cgroup\/cpu\/cpu.cfs_period_us\u3002\u4ee5\u4e0b\u547d\u4ee4\u521b\u5efa\u4e86\u4e00\u4e2a\u5bb9\u5668\uff0c\u540c\u65f6\u8bbe\u7f6e\u4e86\u8be5\u5bb9\u5668\u5bf9CPU\u7684\u4f7f\u7528\u65f6\u95f4\u4e3a50000\uff08\u5355\u4f4d\u4e3a\u5fae\u79d2\uff09\uff0c\u5e76\u9a8c\u8bc1\u4e86\u8be5\u63a5\u53e3\u5bf9\u5e94\u7684cgroup\u6587\u4ef6\u5bf9\u5e94\u7684\u503c\u3002<\/p>\n
# docker run -it --cpu-period 50000 --cpuset-cpus=0 stress bash -c \"cat \/sys\/fs\/cgroup\/cpu\/cpu.cfs_period_us\"\r\n50000\r\n<\/pre>\n\u4ee5\u4e0b\u547d\u4ee4\u5c06\u2013cpu-period\u7684\u503c\u8bbe\u7f6e\u4e3a50000,\u2013cpu-quota\u7684\u503c\u8bbe\u7f6e\u4e3a25000\u3002\u8be5\u5bb9\u5668\u5728\u8fd0\u884c\u65f6\u53ef\u4ee5\u83b7\u53d650%\u7684cpu\u8d44\u6e90\u3002<\/p>\n
$ docker run -it --cpu-period 50000 --cpu-quota=25000 --cpuset-cpus=0 stress stress -c 1\r\nstress: info: [1] dispatching hogs: 1 cpu, 0 io, 0 vm, 0 hdd\r\n<\/pre>\n\u4ecelog\u7684\u6700\u540e\u4e00\u884c\u4e2d\u53ef\u4ee5\u770b\u51fa\uff0c\u8be5\u5bb9\u5668\u7684cpu\u4f7f\u7528\u7387\u7ea6\u4e3a50.0%\u3002<\/p>\n
top - 08:14:31 up\u00a0 5:02,\u00a0 3 users,\u00a0 load average: 0.83, 0.96, 0.89\r\nTasks: 121 total,\u00a0\u00a0 3 running, 118 sleeping,\u00a0\u00a0 0 stopped,\u00a0\u00a0 0 zombie\r\n%Cpu(s):\u00a0 8.7 us,\u00a0 0.1 sy,\u00a0 0.0 ni, 91.3 id,\u00a0 0.0 wa,\u00a0 0.0 hi,\u00a0 0.0 si,\u00a0 0.0 st\r\nKiB Mem :\u00a0 1016488 total,\u00a0\u00a0 737152 free,\u00a0\u00a0\u00a0 74696 used,\u00a0\u00a0 204640 buff\/cache\r\nKiB Swap:\u00a0 1048572 total,\u00a0\u00a0 985196 free,\u00a0\u00a0\u00a0 63376 used.\u00a0\u00a0 779352 avail Mem \r\n\r\n\u00a0 PID USER\u00a0\u00a0\u00a0\u00a0\u00a0 PR\u00a0 NI\u00a0\u00a0\u00a0 VIRT\u00a0\u00a0\u00a0 RES\u00a0\u00a0\u00a0 SHR S\u00a0 %CPU %MEM\u00a0\u00a0\u00a0\u00a0 TIME+ COMMAND\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0\r\n13871 root\u00a0\u00a0\u00a0\u00a0\u00a0 20\u00a0\u00a0 0\u00a0\u00a0\u00a0 7256\u00a0\u00a0\u00a0\u00a0 96\u00a0\u00a0\u00a0\u00a0\u00a0 0 R\u00a0 48.8\u00a0 0.0\u00a0\u00a0 0:59.16 stress\r\n<\/pre>\n3.2.3 \u2013cpu-quota int<\/h4>\n
\u5bf9\u5e94\u7684cgroup\u6587\u4ef6\u662f\/sys\/fs\/cgroup\/cpu\/cpu.cfs_quota_us\u3002<\/p>\n
$ docker run --cpu-quota 1600 --cpuset-cpus=0 stress bash -c \"cat \/sys\/fs\/cgroup\/cpu\/cpu.cfs_quota_us\"\r\n1600\r\n<\/pre>\n\u2013cpu-quota\u63a5\u53e3\u8bbe\u7f6e\u4e86CPU\u7684\u4f7f\u7528\u503c\uff0c\u901a\u5e38\u60c5\u51b5\u4e0b\u5b83\u9700\u8981\u548c\u2013cpu-period\u63a5\u53e3\u4e00\u8d77\u6765\u4f7f\u7528\u3002\u5177\u4f53\u4f7f\u7528\u65b9\u6cd5\u8bf7\u53c2\u8003\u2013cpu-period\u9009\u9879\u3002<\/p>\n
3.3 cpuset\u5b50\u7cfb\u7edf<\/h3>\n3.3.1 \u2013cpuset-cpus<\/h4>\n
\u8be5\u63a5\u53e3\u5bf9\u5e94\u7684cgroup\u6587\u4ef6\u662f\/sys\/sf\/cgroup\/cpuset\/cpuset.cpus\u3002<\/p>\n
\u5728\u591a\u6838CPU\u7684\u865a\u62df\u673a\u4e2d\uff0c\u542f\u52a8\u4e00\u4e2a\u5bb9\u5668\uff0c\u8bbe\u7f6e\u5bb9\u5668\u53ea\u4f7f\u7528CPU\u68381\uff0c\u5e76\u67e5\u770b\u8be5\u63a5\u53e3\u5bf9\u5e94\u7684cgroup\u6587\u4ef6\u4f1a\u88ab\u4fee\u6539\u4e3a1\uff0clog\u5982\u4e0b\u6240\u793a\u3002<\/p>\n
$ docker run -ti --cpuset-cpus 1 stress bash -c \"cat \/sys\/fs\/cgroup\/cpuset\/cpuset.cpus\"\r\n1\r\n<\/pre>\n\u901a\u8fc7\u4ee5\u4e0b\u547d\u4ee4\u6307\u5b9a\u5bb9\u5668\u4f7f\u7528cpu\u68381\uff0c\u5e76\u901a\u8fc7stress\u547d\u4ee4\u52a0\u538b\u3002<\/p>\n
$ docker run -ti --cpuset-cpus 1 stress stress -c 1\r\n<\/pre>\n\u67e5\u770bCPU\u8d44\u6e90\u7684top\u547d\u4ee4\u7684log\u5982\u4e0b\u6240\u793a\u3002\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u8f93\u5165top\u547d\u4ee4\u5e76\u6309\u56de\u8f66\u952e\u540e\uff0c\u518d\u6309\u6570\u5b57\u952e1<\/strong>\uff0c\u7ec8\u7aef\u624d\u80fd\u663e\u793a\u6bcf\u4e2aCPU\u7684\u72b6\u6001\u3002<\/p>\ntop - 08:19:14 up\u00a0 5:07,\u00a0 3 users,\u00a0 load average: 0.17, 0.44, 0.68\r\nTasks: 126 total,\u00a0\u00a0 2 running, 124 sleeping,\u00a0\u00a0 0 stopped,\u00a0\u00a0 0 zombie\r\n%Cpu0\u00a0 :\u00a0 0.3 us,\u00a0 0.0 sy,\u00a0 0.0 ni, 99.7 id,\u00a0 0.0 wa,\u00a0 0.0 hi,\u00a0 0.0 si,\u00a0 0.0 st\r\n%Cpu1\u00a0 :100.0 us,\u00a0 0.0 sy,\u00a0 0.0 ni,\u00a0 0.0 id,\u00a0 0.0 wa,\u00a0 0.0 hi,\u00a0 0.0 si,\u00a0 0.0 st\r\n%Cpu2\u00a0 :\u00a0 0.0 us,\u00a0 0.0 sy,\u00a0 0.0 ni,100.0 id,\u00a0 0.0 wa,\u00a0 0.0 hi,\u00a0 0.0 si,\u00a0 0.0 st\r\n%Cpu3\u00a0 :\u00a0 0.0 us,\u00a0 0.0 sy,\u00a0 0.0 ni,100.0 id,\u00a0 0.0 wa,\u00a0 0.0 hi,\u00a0 0.0 si,\u00a0 0.0 st\r\nKiB Mem :\u00a0 1016488 total,\u00a0\u00a0 736128 free,\u00a0\u00a0\u00a0 75164 used,\u00a0\u00a0 205196 buff\/cache\r\nKiB Swap:\u00a0 1048572 total,\u00a0\u00a0 985224 free,\u00a0\u00a0\u00a0 63348 used.\u00a0\u00a0 778680 avail Mem \r\n\r\n\u00a0 PID USER\u00a0\u00a0\u00a0\u00a0\u00a0 PR\u00a0 NI\u00a0\u00a0\u00a0 VIRT\u00a0\u00a0\u00a0 RES\u00a0\u00a0\u00a0 SHR S\u00a0 %CPU %MEM\u00a0\u00a0\u00a0\u00a0 TIME+ COMMAND\r\n14108 root\u00a0\u00a0\u00a0\u00a0\u00a0 20\u00a0\u00a0 0\u00a0\u00a0\u00a0 7256\u00a0\u00a0\u00a0\u00a0 96\u00a0\u00a0\u00a0\u00a0\u00a0 0 R\u00a0 99.7\u00a0 0.0\u00a0\u00a0 0:12.43 stress \r\n<\/pre>\n\u4ece\u4ee5\u4e0alog\u5f97\u77e5\uff0c\u53ea\u6709CPU\u68381\u7684\u8d1f\u8f7d\u4e3a100%\uff0c\u800c\u5176\u5b83CPU\u6838\u5904\u4e8e\u7a7a\u95f2\u72b6\u6001\uff0c\u7ed3\u679c\u4e0e\u9884\u671f\u7ed3\u679c\u76f8\u7b26\u3002<\/p>\n
3.3.2 \u2013cpuset-mems<\/h4>\n
\u8be5\u63a5\u53e3\u5bf9\u5e94\u7684cgroup\u6587\u4ef6\u662f\/sys\/sf\/cgroup\/cpuset\/cpuset.mems<\/p>\n
$ docker run -ti --cpuset-mems=0 stress bash -c \"cat \/sys\/fs\/cgroup\/cpuset\/cpuset.mems\"\r\n0\r\n<\/pre>\n\u4ee5\u4e0b\u547d\u4ee4\u5c06\u9650\u5236\u5bb9\u5668\u8fdb\u7a0b\u4f7f\u7528\u5185\u5b58\u8282\u70b91\u30013\u7684\u5185\u5b58\u3002<\/p>\n
$ docker run -it --cpuset-mems=\"1,3\" stress bash\r\n<\/pre>\n\u4ee5\u4e0b\u547d\u4ee4\u5c06\u9650\u5236\u5bb9\u5668\u8fdb\u7a0b\u4f7f\u7528\u5185\u5b58\u8282\u70b90\u30011\u30012\u7684\u5185\u5b58\u3002<\/p>\n
$ docker run -it --cpuset-mems=\"0-2\" stress bash\r\n<\/pre>\n3.4 blkio\u5b50\u7cfb\u7edf<\/h3>\n3.4.1 \u2013blkio-weight uint16<\/h4>\n
\u901a\u8fc7\u2013blkio-weight\u63a5\u53e3\u53ef\u4ee5\u8bbe\u7f6e\u5bb9\u5668\u5757\u8bbe\u5907IO\u7684\u6743\u91cd\uff0c\u6709\u6548\u503c\u8303\u56f4\u4e3a10\u81f31000\u7684\u6574\u6570(\u5305\u542b10\u548c1000)\u3002\u9ed8\u8ba4\u60c5\u51b5\u4e0b\uff0c\u6240\u6709\u5bb9\u5668\u90fd\u4f1a\u5f97\u5230\u76f8\u540c\u7684\u6743\u91cd\u503c(500)\u3002\u5bf9\u5e94\u7684cgroup\u6587\u4ef6\u4e3a\/sys\/fs\/cgroup\/blkio\/blkio.weight\u3002\u4ee5\u4e0b\u547d\u4ee4\u8bbe\u7f6e\u4e86\u5bb9\u5668\u5757\u8bbe\u5907IO\u6743\u91cd\u4e3a10\uff0c\u5728log\u4e2d\u53ef\u4ee5\u770b\u5230\u5bf9\u5e94\u7684cgroup\u6587\u4ef6\u7684\u503c\u4e3a10\u3002<\/p>\n
$ docker run -ti --rm --blkio-weight 10 stress bash -c \"cat \/sys\/fs\/cgroup\/blkio\/blkio.weight\"\r\n10\r\n<\/pre>\n\u901a\u8fc7\u4ee5\u4e0b\u4e24\u4e2a\u547d\u4ee4\u6765\u521b\u5efa\u4e0d\u540c\u5757\u8bbe\u5907IO\u6743\u91cd\u503c\u7684\u5bb9\u5668\u3002<\/p>\n
$ docker run -it --name c1 --blkio-weight 300 stress \/bin\/bash\r\n$ docker run -it --name c2 --blkio-weight 600 stress \/bin\/bash\r\n<\/pre>\n\u5982\u679c\u5728\u4e24\u4e2a\u5bb9\u5668\u4e2d\u540c\u65f6\u8fdb\u884c\u5757\u8bbe\u5907\u64cd\u4f5c\uff08\u4f8b\u5982\u4ee5\u4e0b\u547d\u4ee4\uff09\u7684\u8bdd\uff0c\u4f60\u4f1a\u53d1\u73b0\u6240\u82b1\u8d39\u7684\u65f6\u95f4\u548c\u5bb9\u5668\u6240\u62e5\u6709\u7684\u5757\u8bbe\u5907IO\u6743\u91cd\u6210\u53cd\u6bd4\u3002<\/p>\n
$ time dd if=\/mnt\/zerofile of=test.out bs=1M count=1024 oflag=direct\r\n<\/pre>\n3.4.2 \u2013blkio-weight-device<\/h4>\n
\u901a\u8fc7\u2013blkio-weight-device=\u201d\u8bbe\u5907\u540d:\u6743\u91cd\u201d\u63a5\u53e3\u53ef\u4ee5\u8bbe\u7f6e\u5bb9\u5668\u5bf9\u7279\u5b9a\u5757\u8bbe\u5907IO\u7684\u6743\u91cd\uff0c\u6709\u6548\u503c\u8303\u56f4\u4e3a10\u81f31000\u7684\u6574\u6570(\u5305\u542b10\u548c1000)\u3002
\n\u5bf9\u5e94\u7684cgroup\u6587\u4ef6\u4e3a\/sys\/fs\/cgroup\/blkio\/blkio.weight_device\u3002<\/p>\n
$ docker run --blkio-weight-device \"\/dev\/sda:1000\" stress bash -c \"cat \/sys\/fs\/cgroup\/blkio\/blkio.weight_device\"\r\n8:0 1000\r\n<\/pre>\n\u4ee5\u4e0alog\u4e2d\u7684\u201d8:0\u2033\u8868\u793asda\u7684\u8bbe\u5907\u53f7\uff0c\u53ef\u4ee5\u901a\u8fc7stat\u547d\u4ee4\u6765\u83b7\u53d6\u67d0\u4e2a\u8bbe\u5907\u7684\u8bbe\u5907\u53f7\u3002\u4ece\u4ee5\u4e0blog\u4e2d\u53ef\u4ee5\u67e5\u770b\u5230\/dev\/sda\u5bf9\u5e94\u7684\u4e3b\u8bbe\u5907\u53f7\u4e3a8\uff0c\u6b21\u8bbe\u5907\u53f7\u4e3a0\u3002<\/p>\n
$ stat -c %t:%T \/dev\/sda\r\n8:0\r\n<\/pre>\n\u5982\u679c\u2013blkio-weight-device\u63a5\u53e3\u548c\u2013blkio-weight\u63a5\u53e3\u4e00\u8d77\u4f7f\u7528\uff0c\u90a3\u4e48Docker\u4f1a\u4f7f\u7528\u2013blkio-weight\u503c\u4f5c\u4e3a\u9ed8\u8ba4\u7684\u6743\u91cd\u503c\uff0c\u7136\u540e\u4f7f\u7528\u2013blkio-weight-device\u503c\u6765\u8bbe\u5b9a\u6307\u5b9a\u8bbe\u5907\u7684\u6743\u91cd\u503c\uff0c\u800c\u65e9\u5148\u8bbe\u7f6e\u7684\u9ed8\u8ba4\u6743\u91cd\u503c\u5c06\u4e0d\u5728\u8fd9\u4e2a\u7279\u5b9a\u8bbe\u5907\u4e2d\u751f\u6548\u3002<\/p>\n
$ docker run --blkio-weight 300 --blkio-weight-device \"\/dev\/sda:500\" stress bash -c \"cat \/sys\/fs\/cgroup\/blkio\/blkio.weight_device\"\r\n8:0 500\r\n<\/pre>\n\u901a\u8fc7\u4ee5\u4e0alog\u53ef\u4ee5\u770b\u51fa\uff0c\u5f53\u2013blkio-weight\u63a5\u53e3\u548c\u2013blkio-weight-device\u63a5\u53e3\u4e00\u8d77\u4f7f\u7528\u7684\u65f6\u5019\uff0c\/dev\/sda\u8bbe\u5907\u7684\u6743\u91cd\u503c\u7531\u2013blkio-weight-device\u8bbe\u5b9a\u7684\u503c\u6765\u51b3\u5b9a\u3002<\/p>\n
3.4.3 \u2013device-read-bps<\/h4>\n
\u8be5\u63a5\u53e3\u7528\u6765\u9650\u5236\u6307\u5b9a\u8bbe\u5907\u7684\u8bfb\u53d6\u901f\u7387\uff0c\u5355\u4f4d\u53ef\u4ee5\u662fkb\u3001mb\u6216\u8005gb\u3002\u5bf9\u5e94\u7684cgroup\u6587\u4ef6\u662f\/sys\/fs\/cgroup\/blkio\/blkio.throttle.read_bps_device\u3002<\/p>\n
$ docker run -it --device \/dev\/sda:\/dev\/sda --device-read-bps \/dev\/sda:1mb stress bash -c \"cat \/sys\/fs\/cgroup\/blkio\/blkio.throttle.read_bps_device\"\r\n8:0 1048576\r\n<\/pre>\n\u4ee5\u4e0alog\u4e2d\u663e\u793a8:0 1000,8:0\u8868\u793a\/dev\/sda, \u8be5\u63a5\u53e3\u5bf9\u5e94\u7684cgroup\u6587\u4ef6\u7684\u503c\u4e3a1048576\uff0c\u662f1MB\u6240\u5bf9\u5e94\u7684\u5b57\u8282\u6570\uff0c\u53731024\u7684\u5e73\u65b9\u3002<\/p>\n
\u521b\u5efa\u5bb9\u5668\u65f6\u901a\u8fc7\u2013device-read-bps\u63a5\u53e3\u8bbe\u7f6e\u8bbe\u5907\u8bfb\u53d6\u901f\u5ea6\u4e3a1MB\/s\u3002\u4ece\u4ee5\u4e0blog\u4e2d\u53ef\u4ee5\u770b\u51fa,\u8bfb\u53d6\u901f\u5ea6\u88ab\u9650\u5b9a\u4e3a1.0MB\/s,\u4e0e\u9884\u671f\u7ed3\u679c\u76f8\u7b26\u5408\u3002<\/p>\n
$ docker run -it --device \/dev\/sda:\/dev\/sda --device-read-bps \/dev\/sda:1mB stress bash\r\n\r\n# \u8fdb\u5165\u5bb9\u5668\r\n[root@29d953b8ad60 \/]# dd iflag=direct,nonblock if=\/dev\/sda of=\/dev\/null bs=10M count=1\r\n1+0 records in\r\n1+0 records out\r\n10485760 bytes (10 MB) copied, 10.0098 s, 1.0 MB\/s\r\n<\/pre>\n3.4.4 \u2013device-write-bps<\/h4>\n
\u8be5\u63a5\u53e3\u7528\u6765\u9650\u5236\u6307\u5b9a\u8bbe\u5907\u7684\u5199\u901f\u7387\uff0c\u5355\u4f4d\u53ef\u4ee5\u662fkb\u3001mb\u6216\u8005gb\u3002\u5bf9\u5e94\u7684cgroup\u6587\u4ef6\u662f\/sys\/fs\/cgroup\/blkio\/blkio.throttle.write_bps_device\u3002<\/p>\n
$ docker run -it --device \/dev\/sda:\/dev\/sda --device-write-bps \/dev\/sda:1mB stress bash -c \"cat \/sys\/fs\/cgroup\/blkio\/blkio.throttle.write_bps_device\"\r\n8:0 1048576\r\n<\/pre>\n\u4ee5\u4e0alog\u4e2d\u663e\u793a8:0 1000\uff0c8:0\u8868\u793a\/dev\/sda, \u8be5\u63a5\u53e3\u5bf9\u5e94\u7684cgroup\u6587\u4ef6\u7684\u503c\u4e3a1048576\uff0c\u662f1MB\u6240\u5bf9\u5e94\u7684\u5b57\u8282\u6570\uff0c\u53731024\u7684\u5e73\u65b9\u3002<\/p>\n
\u521b\u5efa\u5bb9\u5668\u65f6\u901a\u8fc7\u2013device-write-bps\u63a5\u53e3\u8bbe\u7f6e\u8bbe\u5907\u5199\u901f\u5ea6\u4e3a1MB\/s\u3002\u4ece\u4ee5\u4e0blog\u4e2d\u53ef\u4ee5\u770b\u51fa,\u8bfb\u53d6\u901f\u5ea6\u88ab\u9650\u5b9a\u4e3a1.0MB\/s,\u4e0e\u9884\u671f\u7ed3\u679c\u76f8\u7b26\u5408\u3002\u9650\u901f\u64cd\u4f5c\uff1a<\/p>\n
$ docker run -it --device \/dev\/sda:\/dev\/sda --device-write-bps \/dev\/sda:1mb stress bash\r\n\r\n#\u8fdb\u5165\u5bb9\u5668\r\n[root@61e6b704da5c \/]# dd oflag=direct,nonblock of=\/dev\/sda if=\/dev\/urandom bs=10K count=1000\r\n1000+0 records in\r\n1000+0 records out\r\n10240000 bytes (10 MB) copied, 9.79776 s, 1.0 MB\/s\r\n<\/pre>\n3.4.5 \u2013device-read-iops<\/h4>\n
\u8be5\u63a5\u53e3\u8bbe\u7f6e\u4e86\u8bbe\u5907\u7684IO\u8bfb\u53d6\u901f\u7387\uff0c\u5bf9\u5e94\u7684cgroup\u6587\u4ef6\u662f\/sys\/fs\/cgroup\/blkio\/blkio.throttle.read_iops_device\u3002<\/p>\n
$ docker run -it --device \/dev\/sda:\/dev\/sda --device-read-iops \/dev\/sda:400 stress bash -c \"cat \/sys\/fs\/cgroup\/blkio\/blkio.throttle.read_iops_device\"\r\n8:0 400\r\n<\/pre>\n\u53ef\u4ee5\u901a\u8fc7\u201d\u2013device-read-iops \/dev\/sda:400\u2033\u6765\u9650\u5b9asda\u7684IO\u8bfb\u53d6\u901f\u7387(400\u6b21\/\u79d2)\uff0clog\u5982\u4e0b\u6240\u793a\u3002<\/p>\n
$ docker run -ti --device \/dev\/sda:\/dev\/sda --device-read-iops \/dev\/sda:400 stress bash\r\n\r\n[root@7b505be8d935 \/]# dd iflag=direct,nonblock if=\/dev\/sda of=\/dev\/null bs=1k count=1000\r\n1000+0 records in\r\n1000+0 records out\r\n1024000 bytes (1.0 MB) copied, 2.41321 s, 424 kB\/s\r\n<\/pre>\n\u901a\u8fc7\u4e0a\u9762\u7684log\u4fe1\u606f\u53ef\u4ee5\u770b\u51fa\uff0c\u5bb9\u5668\u6bcf\u79d2IO\u7684\u8bfb\u53d6\u6b21\u6570\u4e3a400\uff0c\u5171\u9700\u8981\u8bfb\u53d61000\u6b21\uff08log\u7b2c\u4e8c\u884c\uff1acount=1000\uff09\uff0c\u6d4b\u8bd5\u7ed3\u679c\u663e\u793a\u6267\u884c\u65f6\u95f4\u4e3a2.42874\u79d2\uff0c\u7ea6\u4e3a2.5(1000\/400)\u79d2\uff0c \u4e0e\u9884\u671f\u7ed3\u679c\u76f8\u7b26\u3002<\/p>\n
3.4.6 \u2013device-write-iops<\/h4>\n
\u8be5\u63a5\u53e3\u8bbe\u7f6e\u4e86\u8bbe\u5907\u7684IO\u5199\u901f\u7387\uff0c\u5bf9\u5e94\u7684cgroup\u6587\u4ef6\u662fcgroup\/blkio\/blkio.throttle.write_iops_device\u3002<\/p>\n
$ docker run -it --device \/dev\/sda:\/dev\/sda --device-write-iops \/dev\/sda:400 ubuntu:14.04 bash -c \"cat \/sys\/fs\/cgroup\/blkio\/blkio.throttle.write_iops_device\"\r\n8:0 400\r\n<\/pre>\n\u53ef\u4ee5\u901a\u8fc7\u201d\u2013device-write-iops \/dev\/sda:400\u2033\u6765\u9650\u5b9asda\u7684IO\u5199\u901f\u7387(400\u6b21\/\u79d2)\uff0clog\u5982\u4e0b\u6240\u793a\u3002<\/p>\n
$ docker run -ti --device \/dev\/sda:\/dev\/sda --device-write-iops \/dev\/sda:400 ubuntu:14.04\r\nroot@ef88a516d6ed:\/# dd oflag=direct,nonblock of=\/dev\/sda if=\/dev\/urandom bs=1K count=1000\r\n1000+0 records in\r\n1000+0 records out\r\n1024000 bytes (1.0 MB) copied, 2.4584 s, 417 kB\/s\r\n<\/pre>\n\u901a\u8fc7\u4e0a\u9762\u7684log\u4fe1\u606f\u53ef\u4ee5\u770b\u51fa\uff0c\u5bb9\u5668\u6bcf\u79d2IO\u7684\u5199\u5165\u6b21\u6570\u4e3a400\uff0c\u5171\u9700\u8981\u51991000\u6b21\uff08log\u7b2c\u4e8c\u884c\uff1acount=1000\uff09\uff0c\u6d4b\u8bd5\u7ed3\u679c\u663e\u793a\u6267\u884c\u65f6\u95f4\u4e3a2.4584\u79d2\uff0c\u7ea6\u4e3a2.5(1000\/400)\u79d2\uff0c \u4e0e\u9884\u671f\u7ed3\u679c\u76f8\u7b26\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u968f\u7740Docker\u6280\u672f\u88ab\u8d8a\u6765\u8d8a\u591a\u7684\u4e2a\u4eba\u3001\u4f01\u4e1a\u6240\u63a5\u53d7\uff0c\u5176\u7528\u9014\u4e5f\u8d8a\u6765\u8d8a\u5e7f\u6cdb\u3002Docker\u8d44\u6e90\u7ba1\u7406\u5305\u542b\u5bf9CPU\u3001\u5185\u5b58\u3001IO\u7b49\u8d44\u6e90\u7684\u9650\u5236\uff0c\u4f46\u5927\u90e8\u5206Docker\u4f7f\u7528\u8005\u5728\u4f7f\u7528\u8d44\u6e90\u7ba1\u7406\u63a5\u53e3\u65f6\u5f80\u5f80\u53ea\u77e5\u5176\u7136\u800c\u4e0d\u77e5\u5176\u6240\u4ee5\u7136\u3002 \u672c\u6587\u5c06\u4ecb\u7ecdDocker\u8d44\u6e90\u7ba1\u7406\u80cc\u540e\u7684Cgroups\u673a\u5236\uff0c\u5e76\u4e14\u5217\u4e3e\u6bcf\u4e00\u4e2a\u8d44\u6e90\u7ba1\u7406\u63a5\u53e3\u5bf9\u5e94\u7684Cgroups\u63a5\u53e3\uff0c\u8ba9Docker\u4f7f\u7528\u8005\u5bf9\u8d44\u6e90\u7ba1\u7406\u77e5\u5176\u7136\u5e76\u4e14\u77e5\u5176\u6240\u4ee5\u7136\u3002 \u4e00\u3001Docker\u8d44\u6e90\u7ba1\u7406\u63a5\u53e3\u6982\u89c8 \u683c\u5f0f \u63cf\u8ff0 -m, \u2013memory bytes \u5185\u5b58\u4f7f\u7528\u9650\u5236\u3002 \u6570\u5b57\u9700\u8981\u4f7f\u7528\u6574\u6570\uff0c\u5bf9\u5e94\u7684\u5355\u4f4d\u662fb, k, m, g\u4e2d\u7684\u4e00\u4e2a\u3002\u6700\u5c0f\u53d6\u503c\u662f4M\u3002 -m, \u2013memory=\u201d <\u6570\u5b57>[<\u5355\u4f4d>]\u201d \u2013memory-swap bytes \u603b\u5185\u5b58\u4f7f\u7528\u9650\u5236 (\u7269\u7406\u5185\u5b58 + \u4ea4\u6362\u5206\u533a\uff0c\u6570\u5b57\u9700\u8981\u4f7f\u7528\u6574\u6570\uff0c\u5bf9\u5e94\u7684\u5355\u4f4d\u662fb, k, m, g\u4e2d\u7684\u4e00\u4e2a\u3002 \u2013memory-swap=\u201d<\u6570\u5b57>[<\u5355\u4f4d>]\u201d \u2013memory-reservation bytes \u5185\u5b58\u8f6f\u9650\u5236\u3002 \u6570\u5b57\u9700\u8981\u4f7f\u7528\u6b63\u6574\u6570\uff0c\u5bf9\u5e94\u7684\u5355\u4f4d\u662fb, k, m, g\u4e2d\u7684\u4e00\u4e2a\u3002 \u2013memory-reservation=\u201d<\u6570\u5b57>[<\u5355\u4f4d>]\u201d \u2013kernel-memory bytes \u5185\u6838\u5185\u5b58\u9650\u5236\u3002 \u6570\u5b57\u9700\u8981\u4f7f\u7528\u6b63\u6574\u6570\uff0c\u5bf9\u5e94\u7684\u5355\u4f4d\u662fb, k, m, g\u4e2d\u7684\u4e00\u4e2a\u3002\u6700\u5c0f\u53d6\u503c\u662f4M\u3002 \u2013kernel-memory=\u201d<\u6570\u5b57>[<\u5355\u4f4d>]\u201d \u2013oom-kill-disable \u5185\u5b58\u8017\u5c3d\u65f6\u662f\u5426\u6740\u6389\u5bb9\u5668 \u2013oom-kill-disable=false \u2013memory-swappiness int \u8c03\u8282\u5bb9\u5668\u5185\u5b58\u4f7f\u7528\u4ea4\u6362\u5206\u533a\u7684\u9009\u9879\uff0c\u53d6\u503c\u4e3a0\u548c100\u4e4b\u95f4\u7684\u6574\u6570(\u542b0\u548c100)\u3002 \u2013memory-swappiness=\u201d\u201d -c, \u2013cpu-shares int CPU\u4efd\u989d (\u76f8\u5bf9\u6743\u91cd) […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[17],"tags":[],"class_list":["post-15466","post","type-post","status-publish","format-standard","hentry","category-docker"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/15466","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/comments?post=15466"}],"version-history":[{"count":1,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/15466\/revisions"}],"predecessor-version":[{"id":15467,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/15466\/revisions\/15467"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=15466"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=15466"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=15466"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}