\u4e0b\u9762\u662f\u540e\u9762\u768411\u4e2a\u57df\u7684\u8f93\u51fa\u89e3\u91ca<\/p>\n

\u7b2c1\u4e2a\u57df\uff1a\u8bfb\u5b8c\u6210\u6b21\u6570 \u2014\u2013 \u8bfb\u78c1\u76d8\u7684\u6b21\u6570\uff0c\u6210\u529f\u5b8c\u6210\u8bfb\u7684\u603b\u6b21\u6570\u3002<\/strong><\/span><\/div>\n
\uff08number of issued reads. This is the total number of reads completed successfully.\uff09<\/pre>\n
\u7b2c2\u4e2a\u57df\uff1a\u5408\u5e76\u8bfb\u5b8c\u6210\u6b21\u6570\uff0c \u7b2c6\u4e2a\u57df\uff1a\u5408\u5e76\u5199\u5b8c\u6210\u6b21\u6570\u3002\u4e3a\u4e86\u6548\u7387\u53ef\u80fd\u4f1a\u5408\u5e76\u76f8\u90bb\u7684\u8bfb\u548c\u5199\u3002\u4ece\u800c\u4e24\u6b214K\u7684\u8bfb\u5728\u5b83\u6700\u7ec8\u88ab\u5904\u7406\u5230\u78c1\u76d8\u4e0a\u4e4b\u524d\u53ef\u80fd\u4f1a\u53d8\u6210\u4e00\u6b218K\u7684\u8bfb\uff0c\u624d\u88ab\u8ba1\u6570\uff08\u548c\u6392\u961f\uff09\uff0c\u56e0\u6b64\u53ea\u6709\u4e00\u6b21I\/O\u64cd\u4f5c\u3002\u8fd9\u4e2a\u57df\u4f7f\u4f60\u77e5\u9053\u8fd9\u6837\u7684\u64cd\u4f5c\u6709\u591a\u9891\u7e41\u3002<\/strong><\/span><\/div>\n
\uff08number of reads merged\uff09<\/pre>\n
\u7b2c3\u4e2a\u57df\uff1a\u8bfb\u6247\u533a\u7684\u6b21\u6570\uff0c\u6210\u529f\u8bfb\u8fc7\u7684\u6247\u533a\u603b\u6b21\u6570\u3002<\/strong><\/span><\/div>\n
\uff08number of sectors read. This is the total number of sectors read successfully.\uff09<\/pre>\n
\u7b2c4\u4e2a\u57df\uff1a\u8bfb\u82b1\u8d39\u7684\u6beb\u79d2\u6570\uff0c\u8fd9\u662f\u6240\u6709\u8bfb\u64cd\u4f5c\u6240\u82b1\u8d39\u7684\u6beb\u79d2\u6570\uff08\u7528__make_request()\u5230end_that_request_last()\u6d4b\u91cf\uff09\u3002<\/strong><\/span><\/div>\n
\uff08number of milliseconds spent reading. This is the total number of milliseconds spent by all reads (as measured from __make_request() to end_that_request_last()).\uff09<\/pre>\n
\u7b2c5\u4e2a\u57df\uff1a\u5199\u5b8c\u6210\u6b21\u6570 \u2014-\u5199\u5b8c\u6210\u7684\u6b21\u6570\uff0c\u6210\u529f\u5199\u5b8c\u6210\u7684\u603b\u6b21\u6570\u3002<\/strong><\/span><\/div>\n
\uff08number of writes completed. This is the total number of writes completed successfully.\uff09<\/pre>\n
\u7b2c6\u4e2a\u57df\uff1a\u5408\u5e76\u5199\u5b8c\u6210\u6b21\u6570 \u2014\u2013\u5408\u5e76\u5199\u6b21\u6570\u3002<\/strong><\/span><\/div>\n
\uff08number of writes merged Reads and writes which are adjacent to each other may be merged for efficiency. Thus two 4K reads may become one 8K read before it is ultimately handed to the disk, and so it will be counted (and queued) as only one I\/O. This field lets you know how often this was done.\uff09<\/pre>\n
\u7b2c7\u4e2a\u57df\uff1a\u5199\u6247\u533a\u6b21\u6570 \u2014- \u5199\u6247\u533a\u7684\u6b21\u6570\uff0c\u6210\u529f\u5199\u6247\u533a\u603b\u6b21\u6570\u3002<\/strong><\/span><\/div>\n
\uff08number of sectors written. This is the total number of sectors written successfully.\uff09<\/pre>\n
\u7b2c8\u4e2a\u57df\uff1a\u5199\u64cd\u4f5c\u82b1\u8d39\u7684\u6beb\u79d2\u6570 \u2014 \u5199\u82b1\u8d39\u7684\u6beb\u79d2\u6570\uff0c\u8fd9\u662f\u6240\u6709\u5199\u64cd\u4f5c\u6240\u82b1\u8d39\u7684\u6beb\u79d2\u6570\uff08\u7528__make_request()\u5230end_that_request_last()\u6d4b\u91cf\uff09\u3002<\/strong><\/span><\/div>\n
\uff08number of milliseconds spent writing This is the total number of milliseconds spent by all writes (as measured from __make_request() to end_that_request_last()).\uff09<\/pre>\n
\u7b2c9\u4e2a\u57df\uff1a\u6b63\u5728\u5904\u7406\u7684\u8f93\u5165\/\u8f93\u51fa\u8bf7\u6c42\u6570 \u2014 -I\/O\u7684\u5f53\u524d\u8fdb\u5ea6\uff0c\u53ea\u6709\u8fd9\u4e2a\u57df\u5e94\u8be5\u662f0\u3002\u5f53\u8bf7\u6c42\u88ab\u4ea4\u7ed9\u9002\u5f53\u7684request_queue_t\u65f6\u589e\u52a0\u548c\u8bf7\u6c42\u5b8c\u6210\u65f6\u51cf\u5c0f\u3002<\/strong><\/span><\/div>\n
\uff08number of I\/Os currently in progress. The only field that should go to zero. Incremented as requests are given to appropriate request_queue_t and decremented as they finish.\uff09<\/pre>\n
\u7b2c10\u4e2a\u57df\uff1a\u8f93\u5165\/\u8f93\u51fa\u64cd\u4f5c\u82b1\u8d39\u7684\u6beb\u79d2\u6570 \u2014-\u82b1\u5728I\/O\u64cd\u4f5c\u4e0a\u7684\u6beb\u79d2\u6570\uff0c\u8fd9\u4e2a\u57df\u4f1a\u589e\u957f\u53ea\u8981field 9\u4e0d\u4e3a0\u3002<\/strong><\/span><\/div>\n
\uff08number of milliseconds spent doing I\/Os. This field is increased so long as field 9 is nonzero.\uff09<\/pre>\n
\u7b2c11\u4e2a\u57df\uff1a\u8f93\u5165\/\u8f93\u51fa\u64cd\u4f5c\u82b1\u8d39\u7684\u52a0\u6743\u6beb\u79d2\u6570 \u2014\u2013 \u52a0\u6743\uff0c \u82b1\u5728I\/O\u64cd\u4f5c\u4e0a\u7684\u6beb\u79d2\u6570\uff0c\u5728\u6bcf\u6b21I\/O\u5f00\u59cb\uff0cI\/O\u7ed3\u675f\uff0cI\/O\u5408\u5e76\u65f6\u8fd9\u4e2a\u57df\u90fd\u4f1a\u589e\u52a0\u3002\u8fd9\u53ef\u4ee5\u7ed9I\/O\u5b8c\u6210\u65f6\u95f4\u548c\u5b58\u50a8\u90a3\u4e9b\u53ef\u4ee5\u7d2f\u79ef\u7684\u63d0\u4f9b\u4e00\u4e2a\u4fbf\u5229\u7684\u6d4b\u91cf\u6807\u51c6\u3002<\/strong><\/span><\/div>\n
\uff08number of milliseconds spent doing I\/Os. This field is incremented at each I\/O start, I\/O completion, I\/O merge, or read of these stats by the number of I\/Os in progress (field 9) times the number of milliseconds spent doing I\/O since the last update of this field. This can provide an easy measure of both I\/O completion time and the backlog that may be accumulating.\uff09<\/pre>\n","protected":false},"excerpt":{"rendered":"
[root@VM_54_118_centos ~]# cat \/proc\/diskstats 253 0 vd […]<\/p>\n","protected":false},"author":1469,"featured_media":234914,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[55],"tags":[],"class_list":["post-234911","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-thread"],"acf":[],"_links":{"self":[{"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/posts\/234911","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/users\/1469"}],"replies":[{"embeddable":true,"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/comments?post=234911"}],"version-history":[{"count":4,"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/posts\/234911\/revisions"}],"predecessor-version":[{"id":235180,"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/posts\/234911\/revisions\/235180"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/media\/234914"}],"wp:attachment":[{"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/media?parent=234911"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/categories?post=234911"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/tags?post=234911"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}