\u4ec0\u4e48\u662fcgroup\uff1f
cgroups\u5176\u540d\u79f0\u6e90\u81ea\u63a7\u5236\u7ec4\u7fa4\uff08control groups\uff09\u7684\u7b80\u5199\uff0c\u662fLinux\u5185\u6838\u7684\u4e00\u4e2a\u529f\u80fd\uff0c\u7528\u6765\u9650\u5236\u3001\u63a7\u5236\u4e0e\u5206\u79bb\u4e00\u4e2a\u8fdb\u7a0b\u7ec4\uff08\u5982CPU\u3001\u5185\u5b58\u3001\u78c1\u76d8\u8f93\u5165\u8f93\u51fa\u7b49\uff09\u3002<\/p>\n\n\n\n
\u4ec0\u4e48\u662fDocker\u8d44\u6e90\u9650\u5236\uff1f
\u9ed8\u8ba4\u60c5\u51b5\u4e0b\uff0cDocker\u5bb9\u5668\u662f\u6ca1\u6709\u8d44\u6e90\u9650\u5236\u7684\uff0c\u5b83\u4f1a\u5c3d\u53ef\u80fd\u5730\u4f7f\u7528\u5bbf\u4e3b\u673a\u80fd\u591f\u5206\u914d\u7ed9\u5b83\u7684\u8d44\u6e90\u3002\u5982\u679c\u4e0d\u5bf9\u5bb9\u5668\u8d44\u6e90\u8fdb\u884c\u9650\u5236\uff0c\u5bb9\u5668\u4e4b\u95f4\u5c31\u4f1a\u76f8\u4e92\u5f71\u54cd\uff0c\u4e00\u4e9b\u5360\u7528\u786c\u4ef6\u8d44\u6e90\u8f83\u9ad8\u7684\u5bb9\u5668\u4f1a\u541e\u566c\u6389\u6240\u6709\u7684\u786c\u4ef6\u8d44\u6e90\uff0c\u4ece\u800c\u5bfc\u81f4\u5176\u5b83\u5bb9\u5668\u65e0\u786c\u4ef6\u8d44\u6e90\u53ef\u7528\uff0c\u53d1\u751f\u505c\u670d\u72b6\u6001\u3002Docker\u63d0\u4f9b\u4e86\u9650\u5236\u5185\u5b58\uff0cCPU\u6216\u78c1\u76d8IO\u7684\u65b9\u6cd5\uff0c \u53ef\u4ee5\u5bf9\u5bb9\u5668\u6240\u5360\u7528\u7684\u786c\u4ef6\u8d44\u6e90\u5927\u5c0f\u4ee5\u53ca\u591a\u5c11\u8fdb\u884c\u9650\u5236\uff0c\u6211\u4eec\u5728\u4f7f\u7528docker create\u521b\u5efa\u4e00\u4e2a\u5bb9\u5668\u6216\u8005docker run\u8fd0\u884c\u4e00\u4e2a\u5bb9\u5668\u7684\u65f6\u5019\u5c31\u53ef\u4ee5\u6765\u5bf9\u6b64\u5bb9\u5668\u7684\u786c\u4ef6\u8d44\u6e90\u505a\u9650\u5236\u3002<\/p>\n\n\n\n
Docker \u901a\u8fc7 cgroup \u6765\u63a7\u5236\u5bb9\u5668\u4f7f\u7528\u7684\u8d44\u6e90\u914d\u989d\uff0c\u5305\u62ec CPU\u3001\u5185\u5b58\u3001\u78c1\u76d8\u4e09\u5927\u65b9\u9762\uff0c\u57fa\u672c\u8986\u76d6\u4e86\u5e38\u89c1\u7684\u8d44\u6e90\u914d\u989d\u548c\u4f7f\u7528\u91cf\u63a7\u5236\u3002<\/p>\n\n\n\n
\u9ed8\u8ba4\u8bbe\u7f6e\u4e0b\uff0c\u6240\u6709\u5bb9\u5668\u53ef\u4ee5\u5e73\u7b49\u5730\u4f7f\u7528\u5bbf\u4e3b\u673a\u7684CPU\u8d44\u6e90\u5e76\u4e14\u6ca1\u6709\u9650\u5236\u3002<\/p>\n\n\n\n
\u8bbe\u7f6eCPU\u8d44\u6e90\u7684\u9009\u9879\u5982\u4e0b<\/p>\n\n\n\n
-c \u6216 --cpu-shares\uff1a \u5728\u6709\u591a\u4e2a\u5bb9\u5668\u7ade\u4e89 CPU \u65f6\u6211\u4eec\u53ef\u4ee5\u8bbe\u7f6e\u6bcf\u4e2a\u5bb9\u5668\u80fd\u4f7f\u7528\u7684 CPU \u65f6\u95f4\u6bd4\u4f8b\u3002\u8fd9\u4e2a\u6bd4\u4f8b\u53eb\u4f5c\u5171\u4eab\u6743\u503c\u3002\u5171\u4eab\u5f0fCPU\u8d44\u6e90\uff0c\u662f\u6309\u6bd4\u4f8b\u5207\u5206CPU\u8d44\u6e90\uff1bDocker \u9ed8\u8ba4\u6bcf\u4e2a\u5bb9\u5668\u7684\u6743\u503c\u4e3a 1024\u3002\u5982\u679c\u4e0d\u6307\u5b9a\u6216\u5c06\u5176\u8bbe\u7f6e\u4e3a0\uff0c\u90fd\u5c06\u4f7f\u7528\u9ed8\u8ba4\u503c\u3002\u6bd4\u5982\uff0c\u5f53\u524d\u7cfb\u7edf\u4e0a\u4e00\u5171\u8fd0\u884c\u4e86\u4e24\u4e2a\u5bb9\u5668\uff0c\u7b2c\u4e00\u4e2a\u5bb9\u5668\u4e0a\u6743\u91cd\u662f1024\uff0c\u7b2c\u4e8c\u4e2a\u5bb9\u5668\u6743\u91cd\u662f512\uff0c \u7b2c\u4e8c\u4e2a\u5bb9\u5668\u542f\u52a8\u4e4b\u540e\u6ca1\u6709\u8fd0\u884c\u4efb\u4f55\u8fdb\u7a0b\uff0c\u81ea\u5df1\u8eab\u4e0a\u7684512\u90fd\u6ca1\u6709\u7528\u5b8c\uff0c\u800c\u7b2c\u4e00\u53f0\u5bb9\u5668\u7684\u8fdb\u7a0b\u6709\u5f88\u591a\uff0c\u8fd9\u4e2a\u65f6\u5019\u5b83\u5b8c\u5168\u53ef\u4ee5\u5360\u7528\u5bb9\u5668\u4e8c\u7684CPU\u7a7a\u95f2\u8d44\u6e90\uff0c\u8fd9\u5c31\u662f\u5171\u4eab\u5f0fCPU\u8d44\u6e90\uff1b\u5982\u679c\u5bb9\u5668\u4e8c\u4e5f\u8dd1\u4e86\u8fdb\u7a0b\uff0c\u90a3\u4e48\u5c31\u4f1a\u628a\u81ea\u5df1\u7684512\u7ed9\u8981\u56de\u6765\uff0c\u6309\u7167\u6b63\u5e38\u6743\u91cd1024:512\u5212\u5206\uff0c\u4e3a\u81ea\u5df1\u7684\u8fdb\u7a0b\u63d0\u4f9bCPU\u8d44\u6e90\u3002\u5982\u679c\u5bb9\u5668\u4e8c\u4e0d\u7528CPU\u8d44\u6e90\uff0c\u90a3\u5bb9\u5668\u4e00\u5c31\u80fd\u591f\u628a\u5bb9\u5668\u4e8c\u7684CPU\u8d44\u6e90\u6240\u5360\u7528\uff0c\u5982\u679c\u5bb9\u5668\u4e8c\u4e5f\u9700\u8981CPU\u8d44\u6e90\uff0c\u90a3\u4e48\u5c31\u6309\u7167\u6bd4\u4f8b\u5212\u5206\u3002\u90a3\u4e48\u7b2c\u4e00\u4e2a\u5bb9\u5668\u4f1a\u4ece\u539f\u6765\u4f7f\u7528\u6574\u4e2a\u5bbf\u4e3b\u673a\u7684CPU\u53d8\u4e3a\u4f7f\u7528\u6574\u4e2a\u5bbf\u4e3b\u673a\u7684CPU\u76842\/3\uff1b\u8fd9\u5c31\u662fCPU\u5171\u4eab\u5f0f\uff0c\u4e5f\u8bc1\u660e\u4e86CPU\u4e3a\u53ef\u538b\u7f29\u6027\u8d44\u6e90\u3002<\/p>\n\n\n\n
--cpus\uff1a \u9650\u5236\u5bb9\u5668\u8fd0\u884c\u7684\u6838\u6570\uff1b\u4ecedocker1.13\u7248\u672c\u4e4b\u540e\uff0cdocker\u63d0\u4f9b\u4e86--cpus\u53c2\u6570\u53ef\u4ee5\u9650\u5b9a\u5bb9\u5668\u80fd\u4f7f\u7528\u7684CPU\u6838\u6570\u3002\u8fd9\u4e2a\u529f\u80fd\u53ef\u4ee5\u8ba9\u6211\u4eec\u66f4\u7cbe\u786e\u5730\u8bbe\u7f6e\u5bb9\u5668CPU\u4f7f\u7528\u91cf\uff0c\u662f\u4e00\u79cd\u66f4\u5bb9\u6613\u7406\u89e3\u4e5f\u5e38\u7528\u7684\u624b\u6bb5\u3002<\/p>\n\n\n\n
--cpuset-cpus\uff1a \u9650\u5236\u5bb9\u5668\u8fd0\u884c\u5728\u6307\u5b9a\u7684CPU\u6838\u5fc3\uff1b\u8fd0\u884c\u5bb9\u5668\u8fd0\u884c\u5728\u54ea\u4e2aCPU\u6838\u5fc3\u4e0a\uff0c\u4f8b\u5982\u4e3b\u673a\u67094\u4e2aCPU\u6838\u5fc3\uff0cCPU\u6838\u5fc3\u6807\u8bc6\u4e3a0-3\uff0c\u6211\u542f\u52a8\u4e00\u53f0\u5bb9\u5668\uff0c\u53ea\u60f3\u8ba9\u8fd9\u53f0\u5bb9\u5668\u8fd0\u884c\u5728\u6807\u8bc60\u548c3\u7684\u4e24\u4e2aCPU\u6838\u5fc3\u4e0a\uff0c\u53ef\u4ee5\u4f7f\u7528cpuset\u6765\u6307\u5b9a\u3002<\/p>\n\n\n\n
\u4e0e\u5185\u5b58\u9650\u989d\u4e0d\u540c\uff0c\u901a\u8fc7-c\u8bbe\u7f6e\u7684cpu share \u5e76\u4e0d\u662fCPU\u8d44\u6e90\u7684\u7edd\u5bf9\u6570\u91cf\uff0c\u800c\u662f\u4e00\u4e2a\u76f8\u5bf9\u7684\u6743\u91cd\u503c\u3002\u67d0\u4e2a\u5bb9\u5668\u6700\u7ec8\u80fd\u5206\u914d\u5230\u7684CPU\u8d44\u6e90\u53d6\u51b3\u4e8e\u5b83\u7684cpu share\u5360\u6240\u6709\u5bb9\u5668cpu share\u603b\u548c\u7684\u6bd4\u4f8b\u3002\u6362\u53e5\u8bdd\u8bf4\uff0c\u901a\u8fc7cpu share\u53ef\u4ee5\u8bbe\u7f6e\u5bb9\u5668\u4f7f\u7528CPU\u7684\u4f18\u5148\u7ea7\u3002<\/p>\n\n\n\n
containerA\u7684cpu share 1024\uff0c \u662fcontainerB \u7684\u4e24\u500d\u3002<\/p>\n\n\n\n
\u5f53\u4e24\u4e2a\u5bb9\u5668\u90fd\u9700\u8981CPU\u8d44\u6e90\u65f6\uff0ccontainerA\u53ef\u4ee5\u5f97\u5230\u7684CPU\u662fcontainerB \u7684\u4e24\u500d\u3002<\/p>\n\n\n\n
\u9700\u8981\u7279\u522b\u6ce8\u610f\u7684\u662f\uff0c\u8fd9\u79cd\u6309\u6743\u91cd\u5206\u914dCPU\u53ea\u4f1a\u53d1\u751f\u5728CPU\u8d44\u6e90\u7d27\u5f20\u7684\u60c5\u51b5\u4e0b\u3002<\/p>\n\n\n\n
\u5982\u679ccontainerA\u5904\u4e8e\u7a7a\u95f2\u72b6\u6001\uff0c\u8fd9\u65f6\uff0c\u4e3a\u4e86\u5145\u5206\u5229\u7528CPU\u8d44\u6e90\uff0ccontainerB \u4e5f\u53ef\u4ee5\u5206\u914d\u5230\u5168\u90e8\u53ef\u7528\u7684CPU\u3002<\/p>\n<\/div><\/div>\n<\/div><\/div>\n\n\n\n
docker run --name \"cont_A\" -c 1024 ubuntu
docker run --name \"cont_B\" -c 512 ubuntu<\/p>\n\n\n\n
\u5bb9\u5668\u6700\u591a\u53ef\u4ee5\u4f7f\u7528\u4e3b\u673a\u4e0a\u4e24\u4e2aCPU \uff0c\u9664\u6b64\u4e4b\u5916\uff0c\u8fd8\u53ef\u4ee5\u6307\u5b9a\u5982 1.5 \u4e4b\u7c7b\u7684\u5c0f\u6570\u3002<\/p>\n\n\n\n
docker run -it --rm --cpus=2 centos \/bin\/bash<\/p>\n\n\n\n
\u8868\u793a\u5bb9\u5668\u4e2d\u7684\u8fdb\u7a0b\u53ef\u4ee5\u5728 CPU-1 \u548c CPU-3 \u4e0a\u6267\u884c\u3002<\/p>\n\n\n\n
docker run -it --cpuset-cpus=\"1,3\" ubuntu:14.04 \/bin\/bash<\/p>\n\n\n\n
\u8868\u793a\u5bb9\u5668\u4e2d\u7684\u8fdb\u7a0b\u53ef\u4ee5\u5728 CPU-0\u3001CPU-1 \u53ca CPU-2 \u4e0a\u6267\u884c\u3002<\/p>\n\n\n\n
docker run -it --cpuset-cpus=\"0-2\" ubuntu:14.04 \/bin\/bash
\u901a\u8fc7-c \u6216 --cpu-shares\u662f\u5bf9CPU\u7684\u8d44\u6e90\u8fdb\u884c\u76f8\u5bf9\u9650\u5236\u3002\u540c\u6837\uff0c\u6211\u4eec\u53ef\u4ee5\u8fdb\u884cCPU\u8d44\u6e90\u7684\u7edd\u5bf9\u9650\u5236\u3002<\/p>\n\n\n\n
CPU \u8d44\u6e90\u7684\u7edd\u5bf9\u9650\u5236
Linux \u901a\u8fc7 CFS\uff08Completely Fair Scheduler\uff0c\u5b8c\u5168\u516c\u5e73\u8c03\u5ea6\u5668\uff09\u6765\u8c03\u5ea6\u5404\u4e2a\u8fdb\u7a0b\u5bf9 CPU \u7684\u4f7f\u7528\u3002CFS \u9ed8\u8ba4\u7684\u8c03\u5ea6\u5468\u671f\u662f 100ms\u3002<\/p>\n\n\n\n
\u6211\u4eec\u53ef\u4ee5\u8bbe\u7f6e\u6bcf\u4e2a\u5bb9\u5668\u8fdb\u7a0b\u7684\u8c03\u5ea6\u5468\u671f\uff0c\u4ee5\u53ca\u5728\u8fd9\u4e2a\u5468\u671f\u5185\u5404\u4e2a\u5bb9\u5668\u6700\u591a\u80fd\u4f7f\u7528\u591a\u5c11 CPU \u65f6\u95f4\u3002<\/p>\n\n\n\n
--cpu-period \u8bbe\u7f6e\u6bcf\u4e2a\u5bb9\u5668\u8fdb\u7a0b\u7684\u8c03\u5ea6\u5468\u671f<\/p>\n\n\n\n
--cpu-quota \u8bbe\u7f6e\u5728\u6bcf\u4e2a\u5468\u671f\u5185\u5bb9\u5668\u80fd\u4f7f\u7528\u7684 CPU \u65f6\u95f4<\/p>\n\n\n\n
\u4f8b\u5982\uff1a<\/p>\n\n\n\n
docker run -it --cpu-period=50000 --cpu-quota=25000 Centos centos \/bin\/bash<\/p>\n\n\n\n
\u8868\u793a\u5c06 CFS \u8c03\u5ea6\u7684\u5468\u671f\u8bbe\u4e3a 50000\uff0c\u5c06\u5bb9\u5668\u5728\u6bcf\u4e2a\u5468\u671f\u5185\u7684 CPU \u914d\u989d\u8bbe\u7f6e\u4e3a 25000\uff0c\u8868\u793a\u8be5\u5bb9\u5668\u6bcf 50ms \u53ef\u4ee5\u5f97\u5230 50% \u7684 CPU \u8fd0\u884c\u65f6\u95f4\u3002<\/p>\n\n\n\n
docker run -it --cpu-period=10000 --cpu-quota=20000 Centos centos \/bin\/bash\u8868\u793a\u5c06\u5bb9\u5668\u7684 CPU \u914d\u989d\u8bbe\u7f6e\u4e3a CFS \u5468\u671f\u7684\u4e24\u500d\uff0cCPU \u4f7f\u7528\u65f6\u95f4\u600e\u4e48\u4f1a\u6bd4\u5468\u671f\u5927\u5462\uff1f\u5176\u5b9e\u5f88\u597d\u89e3\u91ca\uff0c\u7ed9\u5bb9\u5668\u5206\u914d\u4e24\u4e2a CPU \u5c31\u53ef\u4ee5\u4e86\u3002\u8be5\u914d\u7f6e\u8868\u793a\u5bb9\u5668\u53ef\u4ee5\u5728\u6bcf\u4e2a\u5468\u671f\u5185\u4f7f\u7528\u4e24\u4e2a CPU \u7684 100% \u65f6\u95f4\u3002<\/p>\n\n\n\n
CFS \u5468\u671f\u7684\u6709\u6548\u8303\u56f4\u662f 1ms~1s\uff0c\u5bf9\u5e94\u7684--cpu-period\u7684\u6570\u503c\u8303\u56f4\u662f 1000~1000000\u3002<\/p>\n\n\n\n
\u800c\u5bb9\u5668\u7684 CPU \u914d\u989d\u5fc5\u987b\u4e0d\u5c0f\u4e8e 1ms\uff0c\u5373--cpu-quota\u7684\u503c\u5fc5\u987b >= 1000\u3002\u53ef\u4ee5\u770b\u51fa\u8fd9\u4e24\u4e2a\u9009\u9879\u7684\u5355\u4f4d\u90fd\u662f us\u3002<\/p>\n\n\n\n
\u5982\u4f55\u6b63\u786e\u7684\u7406\u89e3 \"\u7edd\u5bf9\"\uff1f
--cpu-quota \u8bbe\u7f6e\u5bb9\u5668\u5728\u4e00\u4e2a\u8c03\u5ea6\u5468\u671f\u5185\u80fd\u4f7f\u7528\u7684 CPU \u65f6\u95f4\u65f6\u5b9e\u9645\u4e0a\u8bbe\u7f6e\u7684\u662f\u4e00\u4e2a\u4e0a\u9650\u3002\u5e76\u4e0d\u662f\u8bf4\u5bb9\u5668\u4e00\u5b9a\u4f1a\u4f7f\u7528\u8fd9\u4e48\u957f\u7684 CPU \u65f6\u95f4\u3002<\/p>\n\n\n\n
\u542f\u52a8\u4e00\u4e2a\u5bb9\u5668\uff0c\u5c06\u5176\u7ed1\u5b9a\u5230 cpu 1 \u4e0a\u6267\u884c\uff0c\u7ed9\u5176 --cpu-quota \u548c --cpu-period \u90fd\u8bbe\u7f6e\u4e3a 50000\u3002\u8868\u793a\u6bcf\u4e2a\u5bb9\u5668\u8fdb\u7a0b\u7684\u8c03\u5ea6\u5468\u671f\u4e3a 50000\uff0c\u5bb9\u5668\u5728\u6bcf\u4e2a\u5468\u671f\u5185\u6700\u591a\u80fd\u4f7f\u7528 50000 CPU \u65f6\u95f4\u3002<\/p>\n\n\n\n
docker run -d --name mongo1 --cpuset-cpus 1 --cpu-quota=50000 --cpu-period=50000 docker.io\/mongo
\u518ddocker stats mongo-1 mongo-2\u53ef\u4ee5\u89c2\u5bdf\u5230\u8fd9\u4e24\u4e2a\u5bb9\u5668\uff0c\u6bcf\u4e2a\u5bb9\u5668\u5bf9 cpu \u7684\u4f7f\u7528\u7387\u5728 50% \u5de6\u53f3\u3002\u8bf4\u660e\u5bb9\u5668\u5e76\u6ca1\u6709\u5728\u6bcf\u4e2a\u5468\u671f\u5185\u4f7f\u7528 50000 \u7684 cpu \u65f6\u95f4\u3002<\/p>\n\n\n\n
\u4f7f\u7528docker stop mongo2\u547d\u4ee4\u7ed3\u675f\u7b2c\u4e8c\u4e2a\u5bb9\u5668\uff0c\u518d\u52a0\u4e00\u4e2a\u53c2\u6570-c 2048 \u542f\u52a8\u5b83\uff1a<\/p>\n\n\n\n
docker run -d --name mongo2 --cpuset-cpus 1 --cpu-quota=50000 --cpu-period=50000 -c 2048 docker.io\/mongo
\u518d\u7528docker stats mongo-1 mongo-2\u547d\u4ee4\u53ef\u4ee5\u89c2\u5bdf\u5230\u7b2c\u4e00\u4e2a\u5bb9\u5668\u7684 CPU \u4f7f\u7528\u7387\u5728 33% \u5de6\u53f3\uff0c\u7b2c\u4e8c\u4e2a\u5bb9\u5668\u7684 CPU \u4f7f\u7528\u7387\u5728 66% \u5de6\u53f3\u3002\u56e0\u4e3a\u7b2c\u4e8c\u4e2a\u5bb9\u5668\u7684\u5171\u4eab\u503c\u662f 2048\uff0c\u7b2c\u4e00\u4e2a\u5bb9\u5668\u7684\u9ed8\u8ba4\u5171\u4eab\u503c\u662f 1024\uff0c\u6240\u4ee5\u7b2c\u4e8c\u4e2a\u5bb9\u5668\u5728\u6bcf\u4e2a\u5468\u671f\u5185\u80fd\u4f7f\u7528\u7684 CPU \u65f6\u95f4\u662f\u7b2c\u4e00\u4e2a\u5bb9\u5668\u7684\u4e24\u500d\u3002<\/p>\n\n\n\n
\u603b\u7ed3
CPU\u4efd\u989d\u63a7\u5236\uff1a-c\u6216--cpu-shares<\/p>\n\n\n\n
CPU\u6838\u63a7\u5236\uff1a--cpuset-cpus\u3001--cpus<\/p>\n\n\n\n
CPU\u5468\u671f\u63a7\u5236\uff1a--cpu-period\u3001--cpu-quota<\/p>\n\n\n\n
\u4e0e\u64cd\u4f5c\u7cfb\u7edf\u7c7b\u4f3c\uff0c\u5bb9\u5668\u53ef\u4ee5\u4f7f\u7528\u7684\u5185\u5b58\u5305\u62ec\u4e24\u90e8\u5206\uff1a\u7269\u7406\u5185\u5b58\u548cSwap\u3002<\/p>\n\n\n\n
Docker\u901a\u8fc7\u4e0b\u9762\u4e24\u7ec4\u53c2\u6570\u6765\u63a7\u5236\u5bb9\u5668\u5185\u5b58\u7684\u4f7f\u7528\u91cf\u3002<\/p>\n\n\n\n
-m \u6216 --memory\uff1a\u8bbe\u7f6e\u5185\u5b58\u7684\u4f7f\u7528\u9650\u989d\uff0c\u4f8b\u5982\uff1a100MB\uff0c2GB\u3002<\/p>\n\n\n\n
--memory-swap\uff1a\u8bbe\u7f6e\u5185\u5b58+swap\u7684\u4f7f\u7528\u9650\u989d\u3002<\/p>\n\n\n\n
\u9ed8\u8ba4\u60c5\u51b5\u4e0b\uff0c\u4e0a\u9762\u4e24\u7ec4\u53c2\u6570\u4e3a-1\uff0c\u5373\u5bf9\u5bb9\u5668\u5185\u5b58\u548cswap\u7684\u4f7f\u7528\u6ca1\u6709\u9650\u5236\u3002\u5982\u679c\u5728\u542f\u52a8\u5bb9\u5668\u65f6\uff0c\u53ea\u6307\u5b9a-m\u800c\u4e0d\u6307\u5b9a--memory-swap\uff0c \u90a3\u4e48--memory-swap\u9ed8\u8ba4\u4e3a-m\u7684\u4e24\u500d\u3002<\/p>\n\n\n\n
\u5141\u8bb8\u8be5\u5bb9\u5668\u6700\u591a\u4f7f\u7528200MB\u7684\u5185\u5b58\u548c100MB \u7684swap\u3002<\/p>\n\n\n\n
docker run -m 200M --memory-swap=300M ubuntu<\/p>\n\n\n\n
\u5bb9\u5668\u6700\u591a\u4f7f\u7528200M\u7684\u5185\u5b58\u548c200M\u7684Swap<\/p>\n\n\n\n
docker run -it -m 200M ubuntu<\/p>\n\n\n\n
Block IO \u662f\u53e6\u4e00\u79cd\u53ef\u4ee5\u9650\u5236\u5bb9\u5668\u4f7f\u7528\u7684\u8d44\u6e90\u3002Block IO \u6307\u7684\u662f\u78c1\u76d8\u7684\u8bfb\u5199\uff0cdocker \u53ef\u901a\u8fc7\u8bbe\u7f6e\u6743\u91cd\u3001\u9650\u5236 bps \u548c iops \u7684\u65b9\u5f0f\u63a7\u5236\u5bb9\u5668\u8bfb\u5199\u78c1\u76d8\u7684\u5e26\u5bbd<\/p>\n\n\n\n
\u6ce8\uff1a\u76ee\u524d Block IO \u9650\u989d\u53ea\u5bf9 direct IO\uff08\u4e0d\u4f7f\u7528\u6587\u4ef6\u7f13\u5b58\uff09\u6709\u6548\u3002<\/p>\n\n\n\n
\u5982\u4f55\u8fdb\u884cBlock IO\u7684\u9650\u5236\uff1f
\u9ed8\u8ba4\u60c5\u51b5\u4e0b\uff0c\u6240\u6709\u5bb9\u5668\u80fd\u5e73\u7b49\u5730\u8bfb\u5199\u78c1\u76d8\uff0c\u53ef\u4ee5\u901a\u8fc7\u8bbe\u7f6e --blkio-weight \u53c2\u6570\u6765\u6539\u53d8\u5bb9\u5668 block IO \u7684\u4f18\u5148\u7ea7\u3002--blkio-weight \u4e0e --cpu-shares \u7c7b\u4f3c\uff0c\u8bbe\u7f6e\u7684\u662f\u76f8\u5bf9\u6743\u91cd\u503c\uff0c\u9ed8\u8ba4\u4e3a 500\u3002\u5728\u4e0b\u9762\u7684\u4f8b\u5b50\u4e2d\uff0ccontainer_A \u8bfb\u5199\u78c1\u76d8\u7684\u5e26\u5bbd\u662f container_B \u7684\u4e24\u500d\u3002<\/p>\n\n\n\n
docker run -it --name container_A --blkio-weight 600 ubuntu
docker run -it --name container_B --blkio-weight 300 ubuntu<\/p>\n\n\n\n
bps \u662f byte per second\uff0c\u8868\u793a\u6bcf\u79d2\u8bfb\u5199\u7684\u6570\u636e\u91cf\u3002<\/p>\n\n\n\n
iops \u662f io per second\uff0c\u8868\u793a\u6bcf\u79d2\u7684\u8f93\u5165\u8f93\u51fa\u91cf(\u6216\u8bfb\u5199\u6b21\u6570)\u3002<\/p>\n\n\n\n
\u53ef\u901a\u8fc7\u4ee5\u4e0b\u53c2\u6570\u63a7\u5236\u5bb9\u5668\u7684 bps \u548c iops\uff1a<\/p>\n\n\n\n
--device-read-bps\uff0c\u9650\u5236\u8bfb\u67d0\u4e2a\u8bbe\u5907\u7684 bps\u3002<\/p>\n\n\n\n
--device-write-bps\uff0c\u9650\u5236\u5199\u67d0\u4e2a\u8bbe\u5907\u7684 bps\u3002<\/p>\n\n\n\n
--device-read-iops\uff0c\u9650\u5236\u8bfb\u67d0\u4e2a\u8bbe\u5907\u7684 iops\u3002<\/p>\n\n\n\n
--device-write-iops\uff0c\u9650\u5236\u5199\u67d0\u4e2a\u8bbe\u5907\u7684 iops\u3002<\/p>\n\n\n\n
\u5bf9\u5199bps\u8fdb\u884c\u9650\u5236\u7684\u6d4b\u8bd5
\u9650\u5236\u5bb9\u5668\u5199 \/dev\/sda \u7684\u901f\u7387\u4e3a 30 MB\/s\u3002<\/p>\n\n\n\n
docker run -it --device-write-bps \/dev\/sda:30MB centos:latest
\u901a\u8fc7 dd \u6d4b\u8bd5\u5728\u5bb9\u5668\u4e2d\u5199\u78c1\u76d8\u7684\u901f\u5ea6\u3002\u56e0\u4e3a\u5bb9\u5668\u7684\u6587\u4ef6\u7cfb\u7edf\u662f\u5728\u5bbf\u4e3b\u673a\u7684 \/dev\/sda \u4e0a\u7684\uff0c\u5728\u5bb9\u5668\u4e2d\u5199\u6587\u4ef6\u76f8\u5f53\u4e8e\u5bf9\u5bbf\u4e3b\u673a \/dev\/sda \u8fdb\u884c\u5199\u64cd\u4f5c\u3002\u53e6\u5916\uff0coflag=direct \u6307\u5b9a\u7528 direct IO \u65b9\u5f0f\u5199\u6587\u4ef6\uff0c\u8fd9\u6837 --device-write-bps \u624d\u80fd\u751f\u6548\u3002<\/p>\n\n\n\n
time dd if=\/dev\/zero of=test.out bs=1M count=800 oflag=direct
\u53c2\u6570\u8bf4\u660e\u5982\u4e0b\uff1a<\/p>\n\n\n\n
if=file\uff1a\u8f93\u5165\u6587\u4ef6\u540d\uff0c\u7f3a\u7701\u4e3a\u6807\u51c6\u8f93\u5165<\/p>\n\n\n\n
of=file\uff1a\u8f93\u51fa\u6587\u4ef6\u540d\uff0c\u7f3a\u7701\u4e3a\u6807\u51c6\u8f93\u51fa<\/p>\n\n\n\n
ibs=bytes\uff1a\u4e00\u6b21\u8bfb\u5165 bytes \u4e2a\u5b57\u8282\uff08\u5373\u4e00\u4e2a\u5757\u5927\u5c0f\u4e3a bytes \u4e2a\u5b57\u8282\uff09<\/p>\n\n\n\n
obs=bytes\uff1a\u4e00\u6b21\u5199 bytes \u4e2a\u5b57\u8282\uff08\u5373\u4e00\u4e2a\u5757\u5927\u5c0f\u4e3a bytes \u4e2a\u5b57\u8282\uff09<\/p>\n\n\n\n
bs=bytes\uff1a\u540c\u65f6\u8bbe\u7f6e\u8bfb\u5199\u5757\u7684\u5927\u5c0f\u4e3a bytes \uff0c\u53ef\u4ee3\u66ff ibs \u548c obs<\/p>\n\n\n\n
count=blocks\uff1a\u4ec5\u62f7\u8d1d blocks \u4e2a\u5757\uff0c\u6bcf\u4e2a\u5757\u5927\u5c0f\u7b49\u4e8e ibs \u6307\u5b9a\u7684\u5b57\u8282\u6570<\/p>\n\n\n\n
Docker\u4e2d\u9488\u5bf9GPU\u8d44\u6e90\u4e0eCPU\u3001\u5185\u5b58\u548c\u78c1\u76d8IO\u8d44\u6e90\u4e0d\u540c\u3002\u5982\u679cDocker\u8981\u4f7f\u7528GPU\uff0c\u9700\u8981docker\u652f\u6301GPU\uff0c\u5728docker19\u4ee5\u524d\u90fd\u9700\u8981\u5355\u72ec\u4e0b\u8f7dnvidia-docker1\u6216nvidia-docker2\u6765\u542f\u52a8\u5bb9\u5668\uff0c\u4f46\u662fdocker19\u4e2d\u540e\u9700\u8981GPU\u7684Docker\u53ea\u9700\u8981\u52a0\u4e2a\u53c2\u6570-\u2013gpus\u5373\u53ef(-\u2013gpus all\u8868\u793a\u4f7f\u7528\u6240\u6709\u7684gpu\uff1b\u8981\u4f7f\u75282\u4e2agpu\uff1a\u2013-gpus 2\u5373\u53ef\uff1b\u4e5f\u53ef\u76f4\u63a5\u6307\u5b9a\u4f7f\u7528\u54ea\u51e0\u4e2a\u5361\uff1a--gpus '\"device=1,2\"')\uff0cDocker\u91cc\u9762\u60f3\u8bfb\u53d6nvidia\u663e\u5361\u518d\u4e5f\u4e0d\u9700\u8981\u989d\u5916\u7684\u5b89\u88c5nvidia-docker\u4e86\u3002<\/p>\n\n\n\n
\u67e5\u770b\u662f\u5426\u5177\u5907--gpus\u53c2\u6570
docker run --help | grep -i gpus
\u67e5\u770bnvidia\u754c\u9762\u662f\u5426\u80fd\u591f\u542f\u52a8
\u8fd0\u884cnvidia\u5b98\u7f51\u63d0\u4f9b\u7684\u955c\u50cf\uff0c\u5e76\u8f93\u5165nvidia-smi\u547d\u4ee4\uff0c\u67e5\u770bnvidia\u754c\u9762\u662f\u5426\u80fd\u591f\u542f\u52a8\u3002<\/p>\n\n\n\n
docker run --gpus all nvidia\/cuda:9.0-base nvidia-smi
\u5728Docker\u5bb9\u5668\u4e2d\u4f7f\u7528GPU<\/p>\n\n\n\n
\u4f7f\u7528\u6240\u6709GPU<\/p>\n\n\n\n
docker run --gpus all nvidia\/cuda:9.0-base nvidia-smi<\/p>\n\n\n\n
\u4f7f\u7528\u4e24\u4e2aGPU<\/p>\n\n\n\n
docker run --gpus 2 nvidia\/cuda:9.0-base nvidia-smi<\/p>\n\n\n\n
\u6307\u5b9aGPU\u8fd0\u884c<\/p>\n\n\n\n
docker run --gpus '\"device=2\"' nvidia\/cuda:9.0-base nvidia-smi
docker run --gpus '\"device=1,2\"' nvidia\/cuda:9.0-base nvidia-smi
docker run --gpus '\"device=UUID-ABCDEF,1\"' nvidia\/cuda:9.0-base nvidia-smi<\/p>\n\n\n\n
<\/p>\n\n\n\n
<\/p>\n","protected":false},"excerpt":{"rendered":"
\u4ec0\u4e48\u662fcgroup\uff1fcgroups\u5176\u540d\u79f0\u6e90\u81ea\u63a7\u5236\u7ec4\u7fa4\uff08control groups\uff09\u7684\u7b80\u5199\uff0c\u662fLinux\u5185\u6838\u7684\u2026 Read More »<\/a><\/span><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[10],"tags":[],"class_list":["post-1388","post","type-post","status-publish","format-standard","hentry","category-os"],"_links":{"self":[{"href":"https:\/\/www.shuran.cn\/index.php?rest_route=\/wp\/v2\/posts\/1388","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.shuran.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.shuran.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.shuran.cn\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.shuran.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1388"}],"version-history":[{"count":1,"href":"https:\/\/www.shuran.cn\/index.php?rest_route=\/wp\/v2\/posts\/1388\/revisions"}],"predecessor-version":[{"id":1389,"href":"https:\/\/www.shuran.cn\/index.php?rest_route=\/wp\/v2\/posts\/1388\/revisions\/1389"}],"wp:attachment":[{"href":"https:\/\/www.shuran.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1388"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.shuran.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1388"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.shuran.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1388"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}