{"id":3377,"date":"2026-10-29T11:00:00","date_gmt":"2026-10-29T03:00:00","guid":{"rendered":"https:\/\/www.ygcloud.com\/knowledge\/?p=3377"},"modified":"2026-10-29T11:49:18","modified_gmt":"2026-10-29T03:49:18","slug":"cloud-server-disk-io-high","status":"publish","type":"post","link":"https:\/\/www.ygcloud.com\/knowledge\/3377\/","title":{"rendered":"\u4e91\u670d\u52a1\u5668\u78c1\u76d8 IO \u9ad8\uff1aiostat \u5b9a\u4f4d\u4e0e\u4e91\u76d8\u9650\u901f"},"content":{"rendered":"<p>\u5148\u8bf4\u7ed3\u8bba\uff1a\u78c1\u76d8 IO \u9ad8\u5148\u770b <code>iowait<\/code>\u3001<code>await<\/code> \u548c <code>%util<\/code>\uff0c\u518d\u5206\u6e05\u662f\u8bfb\u591a\u8fd8\u662f\u5199\u591a\u3001\u968f\u673a\u8fd8\u662f\u987a\u5e8f\u3002\u5e38\u89c1\u5143\u51f6\u662f\u6162\u67e5\u8be2\u5168\u8868\u626b\u63cf\u3001\u65e5\u5fd7\u5237\u76d8\u3001\u5907\u4efd\u538b\u7f29\u3001\u4e91\u76d8 IOPS \u9650\u989d\u3002\u522b\u4e00\u770b\u5230 IO \u9ad8\u5c31\u6362 SSD\uff0c\u5148\u627e\u5230\u662f\u8c01\u5728\u6253\u76d8\u3002<\/p>\n<p>\u4e09\u4e2a\u547d\u4ee4\u5148\u8dd1\uff1a<\/p>\n<pre><code>iostat -x 1 5\n# \u770b await\u3001r_await\u3001w_await\u3001%util\nvmstat 1 5\n# \u770b wa\uff08IO \u7b49\u5f85\uff09\niotop -o\n# \u770b\u54ea\u4e2a\u8fdb\u7a0b\u5728\u8bfb\u5199\u5728\u6253\u76d8<\/code><\/pre>\n<p><code>await<\/code> \u662f\u5355\u6b21 IO \u7684\u5e73\u5747\u7b49\u5f85\u65f6\u95f4\uff0cSSD \u4e0a\u957f\u671f\u9ad8\u4e8e 20ms \u5c31\u503c\u5f97\u67e5\uff1b<code>%util<\/code> \u8d34\u7740 100% \u8bf4\u660e\u8bbe\u5907\u5fd9\u4e0d\u8fc7\u6765\uff1b<code>wa<\/code> \u9ad8\u4f46 <code>%util<\/code> \u4e0d\u9ad8\uff0c\u53ef\u80fd\u662f\u7f51\u7edc\u5b58\u50a8\u6216\u865a\u62df\u5316\u5c42\u7684\u95ee\u9898\u3002<\/p>\n<h2 id=\"\u7b2c\u4e00\u6b65\u627e\u8fdb\u7a0b\">\u7b2c\u4e00\u6b65\uff1a\u627e\u8fdb\u7a0b<\/h2>\n<pre><code>pidstat -d 1 5\niotop -o -P\n# \u627e\u5230\u8bfb\u5199\u6700\u9ad8\u7684\u8fdb\u7a0b\uff0c\u518d\u770b\u5b83\u5728\u5e72\u4ec0\u4e48<\/code><\/pre>\n<p>\u5982\u679c\u662f\u6570\u636e\u5e93\uff0c\u770b\u6162\u67e5\u8be2\u548c\u5168\u8868\u626b\u63cf\uff1b\u5982\u679c\u662f PHP\/Java\uff0c\u770b\u65e5\u5fd7\u7ea7\u522b\u548c\u4e34\u65f6\u6587\u4ef6\uff1b\u5982\u679c\u662f\u5907\u4efd\/\u538b\u7f29\uff0c\u770b\u8c03\u5ea6\u65f6\u95f4\uff1b\u5982\u679c\u662f\u7cfb\u7edf\u8fdb\u7a0b\uff0c\u770b\u662f\u4e0d\u662f\u65e5\u5fd7\u5237\u76d8\u6216\u5185\u6838\u95ee\u9898\u3002<\/p>\n<figure class=\"wp-block-image size-full\"><img width=\"1280\" height=\"720\" src=\"https:\/\/www.ygcloud.com\/knowledge\/wp-content\/uploads\/2026\/10\/58e344bd4396ec6.jpg\" alt=\"IO \u8bf7\u6c42\u5728\u78c1\u76d8\u524d\u6392\u961f\u7684\u74f6\u9888\u793a\u610f\" class=\"wp-image-3374\" loading=\"lazy\" decoding=\"async\" srcset=\"https:\/\/www.ygcloud.com\/knowledge\/wp-content\/uploads\/2026\/10\/58e344bd4396ec6.jpg 1280w, https:\/\/www.ygcloud.com\/knowledge\/wp-content\/uploads\/2026\/10\/58e344bd4396ec6-300x169.jpg 300w, https:\/\/www.ygcloud.com\/knowledge\/wp-content\/uploads\/2026\/10\/58e344bd4396ec6-1024x576.jpg 1024w, https:\/\/www.ygcloud.com\/knowledge\/wp-content\/uploads\/2026\/10\/58e344bd4396ec6-768x432.jpg 768w\" sizes=\"auto, (max-width: 1280px) 100vw, 1280px\" \/><figcaption>await \u548c %util \u4e00\u8d77\u770b\uff0c\u624d\u77e5\u9053\u662f\u6392\u961f\u8fd8\u662f\u8bbe\u5907\u5fd9\u3002<\/figcaption><\/figure>\n<h2 id=\"\u7b2c\u4e8c\u6b65\u770b\u6570\u636e\u5e93\">\u7b2c\u4e8c\u6b65\uff1a\u770b\u6570\u636e\u5e93<\/h2>\n<pre><code>SHOW FULL PROCESSLIST;\nSHOW ENGINE INNODB STATUS;\nSHOW VARIABLES LIKE 'slow_query_log';<\/code><\/pre>\n<p>\u6570\u636e\u5e93\u662f IO \u5927\u6237\u3002\u5168\u8868\u626b\u63cf\u3001\u6ca1\u7d22\u5f15\u7684\u6392\u5e8f\u3001\u5927\u4e8b\u52a1\u3001binlog \u5237\u76d8\u90fd\u4f1a\u628a\u78c1\u76d8\u6253\u6ee1\u3002\u5148\u628a\u6162\u67e5\u8be2\u65e5\u5fd7\u5f00\u8d77\u6765\uff0c\u6309 <code>rows_examined<\/code> \u6392\u5e8f\uff0c\u8865\u7d22\u5f15\u3001\u62c6\u67e5\u8be2\u3001\u907f\u514d N+1\u3002<\/p>\n<p>\u5982\u679c\u662f\u5199\u5165\u9ad8\uff0c\u770b binlog \u540c\u6b65\u3001\u6279\u91cf\u5bfc\u5165\u3001\u5907\u4efd\u4efb\u52a1\uff1b\u5982\u679c\u662f\u8bfb\u53d6\u9ad8\uff0c\u770b buffer pool \u662f\u5426\u592a\u5c0f\u3001\u662f\u5426\u6709\u5927\u91cf\u968f\u673a\u8bfb\u3002<\/p>\n<figure class=\"wp-block-image size-full\"><img width=\"1280\" height=\"720\" src=\"https:\/\/www.ygcloud.com\/knowledge\/wp-content\/uploads\/2026\/10\/71e2742ef1ff824.jpg\" alt=\"\u6570\u636e\u5e93\u67e5\u8be2\u626b\u63cf\u5927\u8868\uff0c\u62d6\u51fa\u7f13\u6162\u7684 IO \u8f68\u8ff9\" class=\"wp-image-3375\" loading=\"lazy\" decoding=\"async\" srcset=\"https:\/\/www.ygcloud.com\/knowledge\/wp-content\/uploads\/2026\/10\/71e2742ef1ff824.jpg 1280w, https:\/\/www.ygcloud.com\/knowledge\/wp-content\/uploads\/2026\/10\/71e2742ef1ff824-300x169.jpg 300w, https:\/\/www.ygcloud.com\/knowledge\/wp-content\/uploads\/2026\/10\/71e2742ef1ff824-1024x576.jpg 1024w, https:\/\/www.ygcloud.com\/knowledge\/wp-content\/uploads\/2026\/10\/71e2742ef1ff824-768x432.jpg 768w\" sizes=\"auto, (max-width: 1280px) 100vw, 1280px\" \/><figcaption>\u6570\u636e\u5e93\u662f IO \u5927\u6237\uff0c\u5148\u5f00\u6162\u67e5\u8be2\u518d\u8c08\u6362\u76d8\u3002<\/figcaption><\/figure>\n<h2 id=\"\u7b2c\u4e09\u6b65\u770b\u65e5\u5fd7\u548c\u5907\u4efd\">\u7b2c\u4e09\u6b65\uff1a\u770b\u65e5\u5fd7\u548c\u5907\u4efd<\/h2>\n<ul>\n<li>\u65e5\u5fd7\u7ea7\u522b\u8c03\u5230 debug\uff0c\u5199\u5165\u91cf\u4f1a\u7ffb\u51e0\u500d<\/li>\n<li>\u8bbf\u95ee\u65e5\u5fd7\u6bcf\u4e2a\u8bf7\u6c42\u4e00\u884c\uff0c\u91cf\u5927\u65f6 IO \u5f88\u53ef\u89c2<\/li>\n<li>\u5907\u4efd\u3001\u538b\u7f29\u3001\u89e3\u538b\u3001rsync \u90fd\u662f\u987a\u5e8f\u5927 IO<\/li>\n<li>\u5b9a\u65f6\u4efb\u52a1\u96c6\u4e2d\u5728\u6574\u70b9\uff0c\u5bb9\u6613\u548c\u4e1a\u52a1\u9ad8\u5cf0\u91cd\u53e0<\/li>\n<\/ul>\n<p>\u628a\u5907\u4efd\u3001\u538b\u7f29\u3001\u65e5\u5fd7\u5f52\u6863\u632a\u5230\u4f4e\u5cf0\uff0c\u6216\u8005\u9650\u5236 <code>ionice<\/code> \u4f18\u5148\u7ea7\uff0c\u80fd\u660e\u663e\u7f13\u89e3\u4e1a\u52a1\u6296\u52a8\u3002<\/p>\n<h2 id=\"\u7b2c\u56db\u6b65\u770b\u4e91\u76d8\u9650\u989d\">\u7b2c\u56db\u6b65\uff1a\u770b\u4e91\u76d8\u9650\u989d<\/h2>\n<p>\u4e91\u76d8\u6709 IOPS \u548c\u541e\u5410\u4e0a\u9650\uff0c\u89c4\u683c\u4e0d\u540c\u5dee\u522b\u5f88\u5927\u3002\u5c0f\u5bb9\u91cf\u4e91\u76d8\u53ef\u80fd\u53ea\u6709\u51e0\u767e IOPS\uff0c\u8dd1\u6570\u636e\u5e93\u4f1a\u660e\u663e\u6392\u961f\uff1b\u7a81\u53d1\u578b\u4e91\u76d8\u6709 burst \u989d\u5ea6\uff0c\u7528\u5b8c\u5c31\u6389\u901f\u3002<\/p>\n<pre><code># \u770b\u5757\u8bbe\u5907\u961f\u5217\u548c\u8c03\u5ea6\u5668\ncat \/sys\/block\/vda\/queue\/scheduler\ncat \/sys\/block\/vda\/queue\/nr_requests<\/code><\/pre>\n<p>\u5982\u679c <code>await<\/code> \u9ad8\u4f46\u8fdb\u7a0b\u8bfb\u5199\u91cf\u4e0d\u5927\uff0c\u5148\u786e\u8ba4\u4e91\u76d8\u89c4\u683c\u548c\u9650\u989d\uff0c\u518d\u8003\u8651\u6362\u76d8\u6216\u5347\u914d\u3002<\/p>\n<figure class=\"wp-block-image size-full\"><img width=\"1280\" height=\"720\" src=\"https:\/\/www.ygcloud.com\/knowledge\/wp-content\/uploads\/2026\/10\/e48f46cb873194e.jpg\" alt=\"\u4e91\u76d8 IOPS \u9650\u989d\u4eea\u8868\u4e0e\u6d41\u91cf\u6574\u5f62\" class=\"wp-image-3376\" loading=\"lazy\" decoding=\"async\" srcset=\"https:\/\/www.ygcloud.com\/knowledge\/wp-content\/uploads\/2026\/10\/e48f46cb873194e.jpg 1280w, https:\/\/www.ygcloud.com\/knowledge\/wp-content\/uploads\/2026\/10\/e48f46cb873194e-300x169.jpg 300w, https:\/\/www.ygcloud.com\/knowledge\/wp-content\/uploads\/2026\/10\/e48f46cb873194e-1024x576.jpg 1024w, https:\/\/www.ygcloud.com\/knowledge\/wp-content\/uploads\/2026\/10\/e48f46cb873194e-768x432.jpg 768w\" sizes=\"auto, (max-width: 1280px) 100vw, 1280px\" \/><figcaption>\u5c0f\u5bb9\u91cf\u4e91\u76d8 IOPS \u6709\u9650\uff0c\u6362\u76d8\u6216\u5347\u914d\u524d\u5148\u786e\u8ba4\u4e0a\u9650\u3002<\/figcaption><\/figure>\n<h2 id=\"\u7b2c\u4e94\u6b65\u6587\u4ef6\u7cfb\u7edf\u548c\u6302\u8f7d\">\u7b2c\u4e94\u6b65\uff1a\u6587\u4ef6\u7cfb\u7edf\u548c\u6302\u8f7d<\/h2>\n<p>ext4\u3001xfs \u7684\u53c2\u6570\u3001\u6302\u8f7d\u9009\u9879\uff08noatime\u3001nodiratime\uff09\u4f1a\u5f71\u54cd\u5199\u5165\u91cf\uff1b\u7f51\u7edc\u5b58\u50a8\uff08NFS\u3001CIFS\uff09\u5ef6\u8fdf\u9ad8\uff0c\u4e0d\u9002\u5408\u8dd1\u6570\u636e\u5e93\u3002\u5bb9\u5668\u91cc\u8fd8\u8981\u770b volume \u662f\u672c\u5730\u76d8\u8fd8\u662f\u7f51\u7edc\u76d8\u3002<\/p>\n<h2 id=\"\u7b2c\u516d\u6b65\u4f18\u5316\u548c\u6269\u5bb9\">\u7b2c\u516d\u6b65\uff1a\u4f18\u5316\u548c\u6269\u5bb9<\/h2>\n<ol>\n<li>\u6162\u67e5\u8be2\u6cbb\u7406\u548c\u7d22\u5f15\u4f18\u5316<\/li>\n<li>\u65e5\u5fd7\u964d\u7ea7\u3001\u8f6e\u8f6c\u3001\u5f02\u6b65\u5237\u76d8<\/li>\n<li>\u5907\u4efd\/\u538b\u7f29\u9519\u5cf0\uff0c\u9650\u5236 IO \u4f18\u5148\u7ea7<\/li>\n<li>\u52a0\u5185\u5b58\u6269\u5927 buffer pool \/ page cache<\/li>\n<li>\u6362\u66f4\u9ad8 IOPS \u7684\u4e91\u76d8\u6216\u672c\u5730 SSD<\/li>\n<li>\u8bfb\u5199\u5206\u79bb\uff0c\u628a\u62a5\u8868\u632a\u5230\u4ece\u5e93<\/li>\n<\/ol>\n<h2 id=\"\u600e\u4e48\u9884\u9632\">\u600e\u4e48\u9884\u9632<\/h2>\n<ul>\n<li>\u76d1\u63a7 await\u3001%util\u3001iowait \u548c\u4e91\u76d8\u9650\u989d<\/li>\n<li>\u6162\u67e5\u8be2\u65e5\u5fd7\u5e38\u5f00\uff0c\u6309\u5468\u590d\u76d8<\/li>\n<li>\u5907\u4efd\u548c\u65e5\u5fd7\u5f52\u6863\u9519\u5cf0<\/li>\n<li>\u6570\u636e\u5e93\u548c\u4e1a\u52a1\u76d8\u5206\u5f00<\/li>\n<li>\u538b\u6d4b\u786e\u8ba4\u5cf0\u503c IOPS \u4e0d\u8d85\u8fc7\u4e91\u76d8\u4e0a\u9650<\/li>\n<\/ul>\n<h2 id=\"iostat-\u5b57\u6bb5\u600e\u4e48\u770b\">iostat \u5b57\u6bb5\u600e\u4e48\u770b<\/h2>\n<p><code>r\/s<\/code> \u548c <code>w\/s<\/code> \u662f\u6bcf\u79d2\u8bfb\u5199\u6b21\u6570\uff0c<code>rkB\/s<\/code> \u548c <code>wkB\/s<\/code> \u662f\u541e\u5410\uff0c<code>await<\/code> \u662f\u5e73\u5747\u7b49\u5f85\uff0c<code>%util<\/code> \u662f\u8bbe\u5907\u5fd9\u7684\u6bd4\u4f8b\u3002\u968f\u673a\u5c0f IO \u591a\u65f6\uff0cIOPS \u5148\u5230\u9876\uff1b\u987a\u5e8f\u5927 IO \u591a\u65f6\uff0c\u541e\u5410\u5148\u5230\u9876\u3002\u5148\u5224\u65ad\u7c7b\u578b\uff0c\u518d\u8c08\u4f18\u5316\u3002<\/p>\n<h2 id=\"\u7528-fio-\u505a\u57fa\u7ebf\">\u7528 fio \u505a\u57fa\u7ebf<\/h2>\n<pre><code>fio --name=randrw --filename=test --size=1G --bs=4k \\\n  --iodepth=64 --ioengine=libaio --direct=1 --rw=randrw --rwmixread=75<\/code><\/pre>\n<p>\u5728\u4e1a\u52a1\u4f4e\u5cf0\u8dd1\u4e00\u6b21\uff0c\u8bb0\u5f55 IOPS\u3001\u541e\u5410\u548c await\uff0c\u4f5c\u4e3a\u8fd9\u53f0\u673a\u5668\u7684\u57fa\u7ebf\u3002\u4ee5\u540e IO \u9ad8\u65f6\u5bf9\u6bd4\u57fa\u7ebf\uff0c\u80fd\u5feb\u901f\u5224\u65ad\u662f\u4e1a\u52a1\u6da8\u4e86\u8fd8\u662f\u76d8\u53d8\u6162\u4e86\u3002<\/p>\n<h2 id=\"\u76d1\u63a7\u548c\u544a\u8b66\">\u76d1\u63a7\u548c\u544a\u8b66<\/h2>\n<p>\u628a await\u3001%util\u3001iowait\u3001\u4e91\u76d8 IOPS \u4f7f\u7528\u7387\u63a5\u8fdb\u76d1\u63a7\uff0c\u8d85\u8fc7\u9608\u503c\u544a\u8b66\u3002\u53ea\u770b CPU \u548c\u5185\u5b58\uff0c\u78c1\u76d8\u5148\u6302\u4e86\u4f60\u53ef\u80fd\u6700\u540e\u4e00\u4e2a\u77e5\u9053\u3002<\/p>\n<h2 id=\"\u7f13\u5b58\u548c\u8bfb\u5199\u5206\u79bb\">\u7f13\u5b58\u548c\u8bfb\u5199\u5206\u79bb<\/h2>\n<p>\u8bfb\u591a\u5199\u5c11\u7684\u4e1a\u52a1\uff0c\u5148\u52a0 Redis \u6216 page cache \u6321\u4f4f\u70ed\u70b9\u8bfb\uff0c\u518d\u628a\u62a5\u8868\u3001\u5217\u8868\u3001\u641c\u7d22\u632a\u5230\u4ece\u5e93\u3002\u5199\u591a\u7684\u4e1a\u52a1\u770b binlog \u548c redo \u5237\u76d8\u7b56\u7565\uff0c\u5fc5\u8981\u65f6\u6362\u66f4\u9ad8 IOPS \u7684\u76d8\u3002\u7f13\u5b58\u548c\u8bfb\u5199\u5206\u79bb\u80fd\u89e3\u51b3\u5927\u90e8\u5206 IO \u538b\u529b\uff0c\u6bd4\u76f4\u63a5\u6362\u76d8\u4fbf\u5b9c\u3002<\/p>\n<p>\u5982\u679c IO \u9ad8\u4f34\u968f\u5927\u91cf\u968f\u673a\u8bfb\uff0c\u5148\u786e\u8ba4 buffer pool \u662f\u5426\u592a\u5c0f\uff1b\u5982\u679c\u4f34\u968f\u5927\u91cf\u987a\u5e8f\u5199\uff0c\u5148\u786e\u8ba4\u5907\u4efd\u548c\u65e5\u5fd7\u662f\u5426\u5728\u9ad8\u5cf0\u671f\u8dd1\u3002<\/p>\n<p>\u538b\u6d4b\u524d\u5148\u70ed\u8eab\uff0c\u907f\u514d\u7f13\u5b58\u51b7\u542f\u52a8\u628a\u7b2c\u4e00\u6b21\u7ed3\u679c\u62c9\u4f4e\uff1b\u8bb0\u5f55\u57fa\u7ebf\u65f6\u540c\u65f6\u5199\u6e05\u4e91\u76d8\u89c4\u683c\u3001\u6587\u4ef6\u7cfb\u7edf\u548c\u6302\u8f7d\u53c2\u6570\u3002<\/p>\n<p>\u6709\u6761\u4ef6\u7684\u8bdd\uff0c\u628a\u4e91\u76d1\u63a7\u91cc\u7684 IOPS \u548c\u541e\u5410\u66f2\u7ebf\u548c\u5bbf\u4e3b\u673a iostat \u5bf9\u7167\uff0c\u80fd\u5feb\u901f\u533a\u5206\u662f\u4e91\u76d8\u9650\u989d\u8fd8\u662f\u5e94\u7528\u81ea\u5df1\u6253\u6ee1\u3002<\/p>\n<p>IO \u95ee\u9898\u591a\u534a\u6709\u5468\u671f\u6027\uff0c\u8bb0\u5f55\u53d1\u751f\u65f6\u95f4\u548c\u4efb\u52a1\u6392\u671f\uff0c\u5f80\u5f80\u4e00\u773c\u5c31\u80fd\u5bf9\u4e0a\u3002<\/p>\n<p>\uff0c\u65e9\u53d1\u73b0\u65e9\u5904\u7406\uff0c\u6bd4\u4e8b\u540e\u8865\u6551\u4fbf\u5b9c\u5f97\u591a\u3002<\/p>\n<h2 id=\"\u5e38\u89c1\u95ee\u9898-faq\">\u5e38\u89c1\u95ee\u9898 FAQ<\/h2>\n<p><strong>Q1\uff1aIO \u9ad8\u4f46 CPU \u4e0d\u9ad8\uff0c\u6b63\u5e38\u5417\uff1f<\/strong><\/p>\n<p>\u6b63\u5e38\u3002IO \u7b49\u5f85\u4e0d\u5360 CPU\uff0cwa \u9ad8\u8bf4\u660e\u8fdb\u7a0b\u5728\u7b49\u78c1\u76d8\u3002\u770b await \u548c %util \u624d\u80fd\u5224\u65ad\u4e25\u91cd\u7a0b\u5ea6\u3002<\/p>\n<p><strong>Q2\uff1a\u6362 SSD \u80fd\u89e3\u51b3\u5417\uff1f<\/strong><\/p>\n<p>\u5982\u679c\u662f\u4e91\u76d8 IOPS \u9650\u989d\u6216\u968f\u673a\u8bfb\u592a\u591a\uff0c\u6362\u9ad8 IOPS \u76d8\u6709\u7528\uff1b\u5982\u679c\u662f\u6162\u67e5\u8be2\u5168\u8868\u626b\u63cf\uff0c\u6362\u76d8\u53ea\u662f\u628a\u95ee\u9898\u63a8\u8fdf\u3002<\/p>\n<p><strong>Q3\uff1aawait \u591a\u5c11\u7b97\u9ad8\uff1f<\/strong><\/p>\n<p>SSD \u4e0a\u957f\u671f\u9ad8\u4e8e 20ms \u8981\u67e5\uff0c\u673a\u68b0\u76d8 20ms \u53ef\u80fd\u6b63\u5e38\u3002\u7ed3\u5408 %util \u548c\u4e1a\u52a1\u5ef6\u8fdf\u4e00\u8d77\u770b\u3002<\/p>\n<p><strong>Q4\uff1a\u5bb9\u5668\u91cc\u600e\u4e48\u67e5\uff1f<\/strong><\/p>\n<p>\u5728\u5bbf\u4e3b\u673a\u770b iostat \u548c iotop\uff0c\u5bb9\u5668\u5185\u770b\u8fdb\u7a0b\uff1b\u6ce8\u610f volume \u662f\u672c\u5730\u76d8\u8fd8\u662f\u7f51\u7edc\u76d8\u3002<\/p>\n<p><strong>Q5\uff1a\u5907\u4efd\u5bfc\u81f4 IO \u9ad8\u600e\u4e48\u529e\uff1f<\/strong><\/p>\n<p>\u9519\u5cf0\u3001\u9650\u901f\u3001\u7528\u5feb\u7167\u5907\u4efd\uff0c\u6216\u8005\u628a\u5907\u4efd\u653e\u5230\u4ece\u5e93\/\u5bf9\u8c61\u5b58\u50a8\uff0c\u522b\u5728\u4e3b\u5e93\u4e0a\u538b\u7f29\u3002<\/p>\n<h2 id=\"\u603b\u7ed3\">\u603b\u7ed3<\/h2>\n<p>\u78c1\u76d8 IO \u9ad8\u7684\u6392\u67e5\u987a\u5e8f\u662f\uff1aiostat \u770b await\/util \u2192 iotop \u627e\u8fdb\u7a0b \u2192 \u67e5\u6570\u636e\u5e93\u548c\u6162\u67e5\u8be2 \u2192 \u770b\u65e5\u5fd7\u5907\u4efd \u2192 \u786e\u8ba4\u4e91\u76d8\u9650\u989d \u2192 \u4f18\u5316\u6216\u6362\u76d8\u3002\u5148\u627e\u5230\u8c01\u5728\u6253\u76d8\uff0c\u518d\u51b3\u5b9a\u82b1\u591a\u5c11\u94b1\u3002<\/p>\n<p>\u9700\u8981\u4e00\u53f0 IOPS \u66f4\u7a33\u7684\u673a\u5668\u8dd1\u6570\u636e\u5e93\u6216\u538b\u6d4b\uff0c\u53ef\u4ee5\u6309\u5c0f\u65f6\u5f00\u4e00\u53f0<a href=\"https:\/\/www.ygcloud.com\/vps\/hong-kong-cn2-vps\">\u8424\u5149\u4e91\u9999\u6e2f CN2 VPS<\/a>\uff0c\u7528 fio \u5148\u6d4b\u4e00\u8f6e\u3002<\/p>\n<h2 id=\"\u76f8\u5173\u63a8\u8350\">\u76f8\u5173\u63a8\u8350<\/h2>\n<ul>\n<li><a href=\"https:\/\/www.ygcloud.com\/knowledge\/3249\/\">VPS \u8d85\u552e\u662f\u4ec0\u4e48\uff1f\u600e\u4e48\u5224\u65ad\u4fbf\u5b9c VPS \u6709\u6ca1\u6709\u8d85\u552e<\/a><\/li>\n<li><a href=\"https:\/\/www.ygcloud.com\/knowledge\/3279\/\">VPS \u7684 CPU \u578b\u53f7\u600e\u4e48\u770b\uff1fEPYC\u3001Xeon \u4e0e\u5171\u4eab\u6838<\/a><\/li>\n<li><a href=\"https:\/\/www.ygcloud.com\/knowledge\/3231\/\">\u7f51\u7ad9 502 \u9519\u8bef\u600e\u4e48\u6392\u67e5\uff1fNginx\u3001PHP-FPM \u4e0e\u540e\u7aef\u8d85\u65f6<\/a><\/li>\n<li><a href=\"https:\/\/www.ygcloud.com\/knowledge\/1951\/\">Docker \u90e8\u7f72\u5e94\u7528\u9700\u8981\u591a\u5927 VPS \u914d\u7f6e\uff1f<\/a><\/li>\n<li><a href=\"https:\/\/www.ygcloud.com\/knowledge\/1380\/\">\u7ad9\u70b9\u76d1\u63a7\u600e\u4e48\u505a\uff1fHTTP\u3001\u5e94\u7528\u3001\u4e3b\u673a\u4e0e\u5907\u4efd\u76d1\u63a7<\/a><\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>\u5148\u8bf4\u7ed3\u8bba\uff1a\u78c1\u76d8 IO \u9ad8\u5148\u770b iowait\u3001await \u548c %util\uff0c\u518d\u5206\u6e05\u662f\u8bfb\u591a\u8fd8\u662f\u5199\u591a\u3001\u968f\u673a\u8fd8\u662f\u987a\u5e8f\u3002\u5e38\u89c1\u5143\u51f6\u662f\u6162\u67e5\u8be2\u5168\u8868\u626b\u63cf\u3001\u65e5\u5fd7\u5237\u76d8\u3001\u5907\u4efd\u538b\u7f29\u3001\u4e91\u76d8 IOPS \u9650\u989d\u3002\u522b\u4e00\u770b\u5230 IO \u9ad8\u5c31\u6362 SSD\uff0c\u5148\u627e\u5230\u662f\u8c01\u5728\u6253\u76d8\u3002 \u4e09\u4e2a\u547d\u4ee4\u5148\u8dd1&#8230;<\/p>\n","protected":false},"author":1,"featured_media":3373,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[100],"tags":[43,46],"topic":[],"class_list":["post-3377","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-100","tag-vps"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>\u4e91\u670d\u52a1\u5668\u78c1\u76d8 IO \u9ad8\uff1aiostat \u5b9a\u4f4d\u4e0e\u4e91\u76d8\u9650\u901f<\/title>\n<meta name=\"description\" content=\"\u4e91\u670d\u52a1\u5668\u78c1\u76d8 IO \u9ad8\u600e\u4e48\u6392\u67e5\uff1f\u7528 iostat\u3001iotop \u5b9a\u4f4d\u8fdb\u7a0b\uff0c\u518d\u67e5\u6162\u67e5\u8be2\u3001\u65e5\u5fd7\u5907\u4efd\u548c\u4e91\u76d8 IOPS \u9650\u989d\uff0c\u7ed9\u51fa\u4f18\u5316\u548c\u6269\u5bb9\u987a\u5e8f\u3002\" \/>\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.ygcloud.com\/knowledge\/3377\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u4e91\u670d\u52a1\u5668\u78c1\u76d8 IO \u9ad8\uff1aiostat \u5b9a\u4f4d\u4e0e\u4e91\u76d8\u9650\u901f\" \/>\n<meta property=\"og:description\" content=\"\u4e91\u670d\u52a1\u5668\u78c1\u76d8 IO \u9ad8\u600e\u4e48\u6392\u67e5\uff1f\u7528 iostat\u3001iotop \u5b9a\u4f4d\u8fdb\u7a0b\uff0c\u518d\u67e5\u6162\u67e5\u8be2\u3001\u65e5\u5fd7\u5907\u4efd\u548c\u4e91\u76d8 IOPS \u9650\u989d\uff0c\u7ed9\u51fa\u4f18\u5316\u548c\u6269\u5bb9\u987a\u5e8f\u3002\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.ygcloud.com\/knowledge\/3377\/\" \/>\n<meta property=\"og:site_name\" content=\"VPS\u77e5\u8bc6\u5206\u4eab\u7ad9\" \/>\n<meta property=\"article:published_time\" content=\"2026-10-29T03:00:00+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-10-29T03:49:18+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.ygcloud.com\/knowledge\/wp-content\/uploads\/2026\/10\/311625ec9ff2a32.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1600\" \/>\n\t<meta property=\"og:image:height\" content=\"900\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"\u6d77\u5916VPS\u63a8\u8350\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u4f5c\u8005\" \/>\n\t<meta name=\"twitter:data1\" content=\"\u6d77\u5916VPS\u63a8\u8350\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u9884\u8ba1\u9605\u8bfb\u65f6\u95f4\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 \u5206\" \/>\n<script type=\"application\/ld+json\" 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