{"id":29934,"date":"2026-04-07T16:00:00","date_gmt":"2026-04-07T08:00:00","guid":{"rendered":"https:\/\/cn.hostease.com\/blog\/?p=29934"},"modified":"2026-04-08T12:55:10","modified_gmt":"2026-04-08T04:55:10","slug":"vps-disk-io-jitter-storage-baseline-performance","status":"publish","type":"post","link":"https:\/\/cn.hostease.com\/blog\/tutorials\/vps-disk-io-jitter-storage-baseline-performance\/","title":{"rendered":"VPS \u670d\u52a1\u5668\u78c1\u76d8 IO \u6296\u52a8\u5904\u7406\uff1a\u5b58\u50a8\u57fa\u7ebf\u6d4b\u8bd5\u4e0e\u4e3b\u673a\u6027\u80fd\u6cbb\u7406"},"content":{"rendered":"<h2>\u4e3a\u4ec0\u4e48\u4f60\u7684 <a href=\"https:\/\/cn.hostease.com\/vps\/\">VPS<\/a> \u4f1a\u51fa\u73b0\u78c1\u76d8 IO \u6296\u52a8\uff1f<\/h2>\n<p>\u5982\u679c\u4f60\u6b63\u5728\u8fd0\u8425\u4e00\u4e2a\u5bf9\u6027\u80fd\u654f\u611f\u7684\u7f51\u7ad9\u6216\u5e94\u7528\uff0c\u78c1\u76d8 IO\uff08\u8f93\u5165\u8f93\u51fa\uff09\u6296\u52a8\u53ef\u80fd\u662f\u6700\u9690\u853d\u7684\u6027\u80fd\u6740\u624b\u3002\u4e3a\u4ec0\u4e48\u4f1a\u51fa\u73b0\u8fd9\u79cd\u60c5\u51b5\uff1f\u56e0\u4e3a VPS\uff08<a href=\"https:\/\/cn.hostease.com\/vps\/\">\u865a\u62df\u4e13\u7528\u670d\u52a1\u5668<\/a>\uff09\u7684\u5b58\u50a8\u8d44\u6e90\u867d\u7136\u72ec\u4eab\uff0c\u4f46\u4ecd\u53d7\u7269\u7406\u5bbf\u4e3b\u673a\u7684\u6574\u4f53\u8d1f\u8f7d\u5f71\u54cd\u3002\u5f53\u540c\u4e00\u7269\u7406\u673a\u4e0a\u7684\u5176\u4ed6 VPS \u5b9e\u4f8b\u8fdb\u884c\u5927\u91cf\u8bfb\u5199\u64cd\u4f5c\u65f6\uff0c\u4f60\u7684\u78c1\u76d8\u6027\u80fd\u53ef\u80fd\u51fa\u73b0\u5468\u671f\u6027\u6ce2\u52a8\uff0c\u5bfc\u81f4\u7f51\u7ad9\u54cd\u5e94\u53d8\u6162\u3001\u6570\u636e\u5e93\u67e5\u8be2\u8d85\u65f6\u3001\u7528\u6237\u4f53\u9a8c\u4e0b\u964d\u3002<\/p>\n<p>\u5982\u4f55\u5e2e\u52a9\u4f60\u8bca\u65ad\u548c\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\uff1f\u672c\u6587\u63d0\u4f9b\u4e00\u5957\u5b8c\u6574\u7684\u5b58\u50a8\u57fa\u7ebf\u6d4b\u8bd5\u65b9\u6cd5\u548c\u6027\u80fd\u6cbb\u7406\u65b9\u6848\uff0c\u8ba9\u4f60\u80fd\u591f\u51c6\u786e\u5b9a\u4f4d IO \u6296\u52a8\u6839\u56e0\uff0c\u5e76\u91c7\u53d6\u9488\u5bf9\u6027\u4f18\u5316\u63aa\u65bd\u3002\u65e0\u8bba\u4f60\u662f\u5916\u8d38\u7ad9\u957f\u3001\u8fd0\u7ef4\u5de5\u7a0b\u5e08\u8fd8\u662f\u4e91\u670d\u52a1\u4f7f\u7528\u8005\uff0c\u8fd9\u5957\u65b9\u6cd5\u90fd\u80fd\u5e2e\u52a9\u4f60\u63d0\u5347\u670d\u52a1\u5668\u7a33\u5b9a\u6027\u3002<\/p>\n<h2>\u78c1\u76d8 IO \u6296\u52a8\u7684\u5178\u578b\u75c7\u72b6<\/h2>\n<p>\u5728\u6df1\u5165\u6d4b\u8bd5\u4e4b\u524d\uff0c\u5148\u4e86\u89e3\u78c1\u76d8 IO \u6296\u52a8\u7684\u5e38\u89c1\u8868\u73b0\uff0c\u8fd9\u6709\u52a9\u4e8e\u4f60\u5feb\u901f\u5224\u65ad\u662f\u5426\u9700\u8981\u6267\u884c\u57fa\u7ebf\u6d4b\u8bd5\u3002<\/p>\n<h3>\u6027\u80fd\u6ce2\u52a8\u7279\u5f81<\/h3>\n<p>\u78c1\u76d8 IO \u6296\u52a8\u6700\u5178\u578b\u7684\u8868\u73b0\uff0c\u4e0d\u662f\u201c\u673a\u5668\u5f7b\u5e95\u6302\u6389\u201d\uff0c\u800c\u662f\u540c\u4e00\u5957\u64cd\u4f5c\u5728\u4e0d\u540c\u65f6\u95f4\u70b9\u7684\u4f53\u611f\u5dee\u5f02\u5f88\u5927\u3002\u4f60\u53ef\u80fd\u4f1a\u770b\u5230\u67d0\u6b21\u67e5\u8be2\u51e0\u5341\u6beb\u79d2\u5c31\u8fd4\u56de\uff0c\u4e0b\u4e00\u6b21\u5374\u62d6\u5230\u51e0\u767e\u6beb\u79d2\uff1b\u4e5f\u53ef\u80fd\u4f1a\u53d1\u73b0\u9875\u9762\u6216\u540e\u53f0\u6bcf\u9694\u51e0\u5206\u949f\u5c31\u5361\u4e00\u4e0b\uff1b\u5982\u679c\u4e1a\u52a1\u6d89\u53ca\u6587\u4ef6\u540c\u6b65\u3001\u5907\u4efd\u6216\u8de8\u8282\u70b9\u590d\u5236\uff0c\u5e26\u5bbd\uff08\u5355\u4f4d\u65f6\u95f4\u5185\u53ef\u4f20\u8f93\u7684\u6570\u636e\u91cf\uff09\u6ce2\u52a8\u4e5f\u4f1a\u8ba9\u8fd9\u79cd\u5361\u987f\u611f\u88ab\u8fdb\u4e00\u6b65\u653e\u5927\u3002\u5bf9\u6570\u636e\u5e93\u573a\u666f\u6765\u8bf4\uff0c\u66f4\u76f4\u63a5\u7684\u75c7\u72b6\u5219\u662f\u5e73\u65f6\u6b63\u5e38\u7684 SQL \u67e5\u8be2\u5076\u5c14\u8d85\u65f6\u3002<\/p>\n<h3>\u76d1\u63a7\u6307\u6807\u5f02\u5e38<\/h3>\n<pre><code class=\"language-bash\">## \u4f7f\u7528 iostat \u67e5\u770b\u78c1\u76d8 IO \u72b6\u6001\niostat -x 1 5\n\n## \u5173\u952e\u6307\u6807\u89e3\u8bfb\uff1a\n## %util - \u78c1\u76d8\u5229\u7528\u7387\uff0c\u6301\u7eed\u8d85\u8fc7 80% \u9700\u5173\u6ce8\n## await - \u5e73\u5747\u7b49\u5f85\u65f6\u95f4\uff0c\u8d85\u8fc7 10ms \u8868\u793a\u6709\u5ef6\u8fdf\n## svctm - \u5e73\u5747\u670d\u52a1\u65f6\u95f4\uff0c\u5e94\u4e0e await \u63a5\u8fd1\n<\/code><\/pre>\n<p>\u5f53 <code>%util<\/code> \u6301\u7eed\u9ad8\u4f4d\u4e14 <code>await<\/code> \u6ce2\u52a8\u660e\u663e\u65f6\uff0c\u5f88\u53ef\u80fd\u5b58\u5728 IO \u6296\u52a8\u95ee\u9898\u3002<\/p>\n<p><img decoding=\"async\" alt=\"\u78c1\u76d8 IO \u76d1\u63a7\u6307\u6807\u793a\u4f8b\" src=\"https:\/\/cn.hostease.com\/blog\/wp-content\/uploads\/2026\/04\/vps-disk-io-jitter-storage-baseline-performance-monitoring.webp\" \/><\/p>\n<h2>\u5b58\u50a8\u57fa\u7ebf\u6d4b\u8bd5\u65b9\u6cd5<\/h2>\n<p>\u5efa\u7acb\u5b58\u50a8\u6027\u80fd\u57fa\u7ebf\u662f\u8bca\u65ad IO \u6296\u52a8\u7684\u7b2c\u4e00\u6b65\u3002\u53ea\u6709\u77e5\u9053&#8221;\u6b63\u5e38&#8221;\u662f\u4ec0\u4e48\u6837\u5b50\uff0c\u624d\u80fd\u8bc6\u522b&#8221;\u5f02\u5e38&#8221;\u3002<\/p>\n<h3>\u6d4b\u8bd5\u5de5\u5177\u9009\u62e9<\/h3>\n<p><strong>FIO\uff08Flexible I\/O Tester\uff09<\/strong> \u662f\u6700\u4e13\u4e1a\u7684\u78c1\u76d8\u6027\u80fd\u6d4b\u8bd5\u5de5\u5177\uff0c\u53ef\u4ee5\u6a21\u62df\u5404\u79cd\u8bfb\u5199\u573a\u666f\uff1a<\/p>\n<pre><code class=\"language-bash\">## \u5b89\u88c5 FIO\nsudo apt-get install fio -y  # Debian\/Ubuntu\nsudo yum install fio -y      # CentOS\/RHEL\n\n## \u57fa\u7840\u968f\u673a\u8bfb\u5199\u6d4b\u8bd5\uff084K \u5757\u5927\u5c0f\uff0c\u6a21\u62df\u6570\u636e\u5e93\u573a\u666f\uff09\nfio --name=random_rw --ioengine=libaio --iodepth=32 \\\n    --rw=randrw --bs=4k --direct=1 --size=1G \\\n    --numjobs=2 --runtime=60 --group_reporting \\\n    --filename=\/tmp\/fio_test\n<\/code><\/pre>\n<p><strong>DD \u547d\u4ee4<\/strong> \u9002\u5408\u5feb\u901f\u6d4b\u8bd5\u987a\u5e8f\u8bfb\u5199\u6027\u80fd\uff1a<\/p>\n<pre><code class=\"language-bash\">## \u5199\u5165\u6d4b\u8bd5\uff081GB \u6587\u4ef6\uff09\ndd if=\/dev\/zero of=\/tmp\/test_file bs=1M count=1024 conv=fsync\n\n## \u8bfb\u53d6\u6d4b\u8bd5\uff08\u6e05\u9664\u7f13\u5b58\u540e\uff09\necho 3 &gt; \/proc\/sys\/vm\/drop_caches\ndd if=\/tmp\/test_file of=\/dev\/null bs=1M count=1024\n<\/code><\/pre>\n<h3>\u57fa\u7ebf\u6d4b\u8bd5\u7ef4\u5ea6<\/h3>\n<p>\u5efa\u7acb\u5b8c\u6574\u7684\u5b58\u50a8\u6027\u80fd\u57fa\u7ebf\u9700\u8981\u6d4b\u8bd5\u4ee5\u4e0b\u7ef4\u5ea6\uff1a<\/p>\n<table>\n<thead>\n<tr>\n<th>\u6d4b\u8bd5\u7c7b\u578b<\/th>\n<th>\u5757\u5927\u5c0f<\/th>\n<th>\u961f\u5217\u6df1\u5ea6<\/th>\n<th>\u6a21\u62df\u573a\u666f<\/th>\n<th>\u6b63\u5e38\u53c2\u8003\u503c\uff08SSD\uff09<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u968f\u673a\u8bfb<\/td>\n<td>4K<\/td>\n<td>1-4<\/td>\n<td>\u6570\u636e\u5e93\u67e5\u8be2<\/td>\n<td>IOPS &gt; 5000<\/td>\n<\/tr>\n<tr>\n<td>\u968f\u673a\u5199<\/td>\n<td>4K<\/td>\n<td>1-4<\/td>\n<td>\u65e5\u5fd7\u5199\u5165<\/td>\n<td>IOPS &gt; 3000<\/td>\n<\/tr>\n<tr>\n<td>\u987a\u5e8f\u8bfb<\/td>\n<td>1M<\/td>\n<td>1-8<\/td>\n<td>\u6587\u4ef6\u4e0b\u8f7d<\/td>\n<td>\u541e\u5410\u91cf &gt; 300MB\/s<\/td>\n<\/tr>\n<tr>\n<td>\u987a\u5e8f\u5199<\/td>\n<td>1M<\/td>\n<td>1-8<\/td>\n<td>\u6570\u636e\u5907\u4efd<\/td>\n<td>\u541e\u5410\u91cf &gt; 200MB\/s<\/td>\n<\/tr>\n<tr>\n<td>\u6df7\u5408\u8bfb\u5199<\/td>\n<td>4K<\/td>\n<td>16-32<\/td>\n<td>\u7efc\u5408\u8d1f\u8f7d<\/td>\n<td>\u5ef6\u8fdf &lt; 5ms<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><strong>\u5173\u952e\u63d0\u793a<\/strong>\uff1a\u6d4b\u8bd5\u6587\u4ef6\u5e94\u653e\u5728\u5b9e\u9645\u6570\u636e\u6240\u5728\u7684\u78c1\u76d8\u5206\u533a\uff0c\u907f\u514d\u6d4b\u8bd5 <code>\/tmp<\/code> \u7b49\u4e34\u65f6\u76ee\u5f55\uff08\u53ef\u80fd\u662f\u5185\u5b58\u76d8\uff09\u3002<\/p>\n<h3>\u957f\u65f6\u95f4\u538b\u529b\u6d4b\u8bd5<\/h3>\n<p>IO \u6296\u52a8\u5f80\u5f80\u5728\u957f\u65f6\u95f4\u8fd0\u884c\u540e\u624d\u4f1a\u663e\u73b0\u3002\u5efa\u8bae\u6267\u884c\u81f3\u5c11 30 \u5206\u949f\u7684\u6301\u7eed\u538b\u529b\u6d4b\u8bd5\uff1a<\/p>\n<pre><code class=\"language-bash\">## 30 \u5206\u949f\u6301\u7eed\u968f\u673a\u8bfb\u5199\u6d4b\u8bd5\nfio --name=long_test --ioengine=libaio --iodepth=16 \\\n    --rw=randrw --bs=4k --direct=1 --size=2G \\\n    --numjobs=4 --runtime=1800 --time_based \\\n    --group_reporting --filename=\/data\/fio_long_test\n<\/code><\/pre>\n<p>\u6d4b\u8bd5\u8fc7\u7a0b\u4e2d\uff0c\u6bcf\u9694 5 \u5206\u949f\u8bb0\u5f55\u4e00\u6b21\u6027\u80fd\u6570\u636e\uff0c\u89c2\u5bdf\u662f\u5426\u5b58\u5728\u5468\u671f\u6027\u4e0b\u964d\u3002<\/p>\n<h2>IO \u6296\u52a8\u6839\u56e0\u5206\u6790<\/h2>\n<p>\u6839\u636e\u57fa\u7ebf\u6d4b\u8bd5\u7ed3\u679c\uff0c\u53ef\u4ee5\u5b9a\u4f4d IO \u6296\u52a8\u7684\u5177\u4f53\u539f\u56e0\u3002<\/p>\n<h3>\u539f\u56e0\u4e00\uff1a\u7269\u7406\u5bbf\u4e3b\u673a\u8d44\u6e90\u4e89\u62a2<\/h3>\n<p>\u8fd9\u662f VPS\uff08\u865a\u62df<a href=\"https:\/\/cn.hostease.com\/dedicated-server\/\">\u4e13\u7528\u670d\u52a1\u5668<\/a>\uff09\u73af\u5883\u6700\u5e38\u89c1\u7684\u95ee\u9898\u3002\u5f53\u540c\u4e00\u7269\u7406\u673a\u4e0a\u7684\u5176\u4ed6\u79df\u6237\u8fdb\u884c\u5927\u91cf\u78c1\u76d8\u64cd\u4f5c\u65f6\uff0c\u4f1a\u5f71\u54cd\u4f60\u7684 IO \u6027\u80fd\u3002<\/p>\n<p><strong>\u8bca\u65ad\u65b9\u6cd5<\/strong>\uff1a\u5728\u4e0d\u540c\u65f6\u95f4\u6bb5\uff08\u51cc\u6668\u3001\u5de5\u4f5c\u65e5\u9ad8\u5cf0\u3001\u5468\u672b\uff09\u91cd\u590d\u57fa\u7ebf\u6d4b\u8bd5\u3002\u5982\u679c\u6027\u80fd\u5dee\u5f02\u8d85\u8fc7 30%\uff0c\u5f88\u53ef\u80fd\u662f\u5bbf\u4e3b\u673a\u4e89\u62a2\uff1b\u8fd9\u65f6\u518d\u8054\u7cfb\u670d\u52a1\u5546\u6838\u5bf9\u7269\u7406\u673a\u8d1f\u8f7d\u60c5\u51b5\uff0c\u4f1a\u6bd4\u5355\u6b21\u8dd1\u5206\u66f4\u6709\u8bf4\u670d\u529b\u3002<\/p>\n<p><strong>\u89e3\u51b3\u65b9\u6848<\/strong>\uff1a<br \/>\n&#8211; \u5347\u7ea7\u5230<a href=\"https:\/\/cn.hostease.com\/dedicated-server\/\">\u72ec\u7acb\u670d\u52a1\u5668<\/a>\uff0c\u5b8c\u5168\u72ec\u4eab\u7269\u7406\u8d44\u6e90<br \/>\n&#8211; \u9009\u62e9\u63d0\u4f9b&#8221;\u8d44\u6e90\u4fdd\u969c&#8221;\u7684 <a href=\"https:\/\/cn.hostease.com\/vps\/\">VPS \u4e3b\u673a<\/a>\u65b9\u6848<br \/>\n&#8211; \u8fc1\u79fb\u5230\u8d1f\u8f7d\u66f4\u4f4e\u7684\u7269\u7406\u8282\u70b9<\/p>\n<h3>\u539f\u56e0\u4e8c\uff1a\u78c1\u76d8\u7c7b\u578b\u9650\u5236<\/h3>\n<p>\u4e0d\u540c\u5b58\u50a8\u4ecb\u8d28\u7684\u6027\u80fd\u5dee\u5f02\u5de8\u5927\uff1a<\/p>\n<table>\n<thead>\n<tr>\n<th>\u5b58\u50a8\u7c7b\u578b<\/th>\n<th>\u968f\u673a\u8bfb IOPS<\/th>\n<th>\u987a\u5e8f\u8bfb\u541e\u5410\u91cf<\/th>\n<th>\u9002\u7528\u573a\u666f<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>HDD \u673a\u68b0\u76d8<\/td>\n<td>100-200<\/td>\n<td>100-150MB\/s<\/td>\n<td>\u51b7\u6570\u636e\u5907\u4efd<\/td>\n<\/tr>\n<tr>\n<td>SATA SSD<\/td>\n<td>5000-10000<\/td>\n<td>400-550MB\/s<\/td>\n<td>\u4e00\u822c\u7f51\u7ad9<\/td>\n<\/tr>\n<tr>\n<td>NVMe SSD<\/td>\n<td>50000+<\/td>\n<td>2000-3500MB\/s<\/td>\n<td>\u9ad8\u5e76\u53d1\u6570\u636e\u5e93<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u5982\u679c\u4f60\u7684\u5e94\u7528\u5bf9 IO \u8981\u6c42\u9ad8\u4f46\u4f7f\u7528\u7684\u662f HDD \u6216\u4f4e\u7aef SSD\uff0c\u5347\u7ea7\u5b58\u50a8\u4ecb\u8d28\u662f\u6700\u76f4\u63a5\u7684\u89e3\u51b3\u65b9\u6848\u3002<\/p>\n<h3>\u539f\u56e0\u4e09\uff1a\u6587\u4ef6\u7cfb\u7edf\u914d\u7f6e\u4e0d\u5f53<\/h3>\n<p>\u6587\u4ef6\u7cfb\u7edf\u53c2\u6570\u5bf9\u6027\u80fd\u5f71\u54cd\u663e\u8457\uff1a<\/p>\n<pre><code class=\"language-bash\">## \u68c0\u67e5\u5f53\u524d\u6302\u8f7d\u9009\u9879\nmount | grep &quot; \/ &quot;\n\n## \u4f18\u5316\u5efa\u8bae\uff08\/etc\/fstab \u4e2d\u6dfb\u52a0\uff09\n## noatime - \u4e0d\u66f4\u65b0\u8bbf\u95ee\u65f6\u95f4\uff0c\u51cf\u5c11\u5199\u5165\n## discard - \u542f\u7528 TRIM\uff08SSD \u4e13\u7528\uff09\n\/dev\/vda1 \/ ext4 defaults,noatime,discard 0 1\n<\/code><\/pre>\n<p><strong>\u6ce8\u610f<\/strong>\uff1a\u4fee\u6539 <code>\/etc\/fstab<\/code> \u524d\u52a1\u5fc5\u5907\u4efd\uff0c\u9519\u8bef\u7684\u914d\u7f6e\u53ef\u80fd\u5bfc\u81f4\u7cfb\u7edf\u65e0\u6cd5\u542f\u52a8\u3002<\/p>\n<h3>\u539f\u56e0\u56db\uff1a\u5e94\u7528\u5c42 IO \u6a21\u5f0f\u95ee\u9898<\/h3>\n<p>\u67d0\u4e9b\u5e94\u7528\u4f1a\u4ea7\u751f\u5927\u91cf\u5c0f\u6587\u4ef6\u8bfb\u5199\uff0c\u5bfc\u81f4 IO \u961f\u5217\u5806\u79ef\uff1a<\/p>\n<ul>\n<li><strong>\u65e5\u5fd7\u8f6e\u8f6c\u8fc7\u4e8e\u9891\u7e41<\/strong>\uff1a\u6bcf\u5c0f\u65f6\u751a\u81f3\u6bcf\u5206\u949f\u5207\u5272\u65e5\u5fd7<\/li>\n<li><strong>\u7f13\u5b58\u7b56\u7565\u4e0d\u5f53<\/strong>\uff1a\u9891\u7e41\u5199\u5165\u5c0f\u7f13\u5b58\u6587\u4ef6<\/li>\n<li><strong>\u6570\u636e\u5e93\u914d\u7f6e\u95ee\u9898<\/strong>\uff1a<code>innodb_flush_log_at_trx_commit=1<\/code> \u5bfc\u81f4\u6bcf\u6b21\u4e8b\u52a1\u90fd\u5237\u76d8<\/li>\n<\/ul>\n<p><strong>\u4f18\u5316\u65b9\u5411<\/strong>\uff1a\u4f18\u5148\u628a\u65e5\u5fd7\u8f6e\u8f6c\u6539\u6210\u6bcf\u5929\u6267\u884c\u5e76\u5c3d\u91cf\u5f02\u6b65\u5199\u5165\uff0c\u628a\u70ed\u70b9\u7f13\u5b58\u653e\u5230 Redis \u6216 Memcached \u8fd9\u7c7b\u5185\u5b58\u5c42\uff0c\u800c\u4e0d\u662f\u7ee7\u7eed\u5806\u78c1\u76d8\u8bfb\u5199\uff1b\u6570\u636e\u5e93\u5219\u6839\u636e\u4e1a\u52a1\u5bb9\u5fcd\u5ea6\u8c03\u6574\u5237\u76d8\u7b56\u7565\uff0c\u907f\u514d\u6bcf\u4e2a\u4e8b\u52a1\u90fd\u628a\u5b58\u50a8\u5c42\u62d6\u8fdb\u9ad8\u6296\u52a8\u72b6\u6001\u3002<\/p>\n<p><img decoding=\"async\" alt=\"\u5b58\u50a8\u6027\u80fd\u4f18\u5316\u67b6\u6784\u793a\u610f\" src=\"https:\/\/cn.hostease.com\/blog\/wp-content\/uploads\/2026\/04\/vps-disk-io-jitter-storage-baseline-performance-architecture.webp\" \/><\/p>\n<h2>\u6027\u80fd\u6cbb\u7406\u5b9e\u6218\u65b9\u6848<\/h2>\n<p>\u6839\u636e\u6839\u56e0\u5206\u6790\u7ed3\u679c\uff0c\u91c7\u53d6\u9488\u5bf9\u6027\u7684\u6cbb\u7406\u63aa\u65bd\u3002<\/p>\n<h3>\u65b9\u6848 A\uff1a\u77ed\u671f\u5e94\u6025\u4f18\u5316<\/h3>\n<p>\u5f53 IO \u6296\u52a8\u5df2\u7ecf\u5f71\u54cd\u4e1a\u52a1\u65f6\uff0c\u5148\u6267\u884c\u4ee5\u4e0b\u5e94\u6025\u63aa\u65bd\uff1a<\/p>\n<p><strong>1. \u9650\u5236\u975e\u5173\u952e\u8fdb\u7a0b\u7684 IO \u4f18\u5148\u7ea7<\/strong><\/p>\n<pre><code class=\"language-bash\">## \u4f7f\u7528 ionice \u964d\u4f4e\u5907\u4efd\u4efb\u52a1\u7684 IO \u4f18\u5148\u7ea7\nionice -c3 -p $(pgrep rsync)\n\n## \u542f\u52a8\u65b0\u8fdb\u7a0b\u65f6\u6307\u5b9a\u4f4e\u4f18\u5148\u7ea7\nionice -c3 nice -n19 backup_script.sh\n<\/code><\/pre>\n<p><strong>2. \u589e\u52a0\u7cfb\u7edf\u7f13\u5b58<\/strong><\/p>\n<pre><code class=\"language-bash\">## \u8c03\u6574\u810f\u9875\u56de\u5199\u6bd4\u4f8b\uff08\u51cf\u5c11\u7a81\u53d1\u5199\u5165\uff09\nsysctl -w vm.dirty_ratio=10\nsysctl -w vm.dirty_background_ratio=5\n\n## \u6c38\u4e45\u751f\u6548\uff1a\u6dfb\u52a0\u5230 \/etc\/sysctl.conf\nvm.dirty_ratio = 10\nvm.dirty_background_ratio = 5\n<\/code><\/pre>\n<p><strong>3. \u4e34\u65f6\u8fc1\u79fb\u9ad8 IO \u8d1f\u8f7d\u4efb\u52a1<\/strong><\/p>\n<p>\u5c06\u5907\u4efd\u3001\u65e5\u5fd7\u5206\u6790\u7b49\u4efb\u52a1\u8c03\u6574\u5230\u4e1a\u52a1\u4f4e\u5cf0\u671f\uff08\u5982\u51cc\u6668 3-5 \u70b9\uff09\u6267\u884c\u3002<\/p>\n<h3>\u65b9\u6848 B\uff1a\u4e2d\u671f\u67b6\u6784\u4f18\u5316<\/h3>\n<p><strong>1. \u8bfb\u5199\u5206\u79bb<\/strong><\/p>\n<p>\u5c06\u8bfb\u64cd\u4f5c\u548c\u5199\u64cd\u4f5c\u5206\u6563\u5230\u4e0d\u540c\u78c1\u76d8\u6216\u8282\u70b9\uff1a<\/p>\n<ul>\n<li>\u6570\u636e\u5e93\u4e3b\u5e93\u8d1f\u8d23\u5199\u5165\uff0c\u4ece\u5e93\u8d1f\u8d23\u8bfb\u53d6<\/li>\n<li>\u9759\u6001\u8d44\u6e90\uff08\u56fe\u7247\u3001CSS\u3001JS\uff09\u5206\u79bb\u5230\u5bf9\u8c61\u5b58\u50a8\u6216 CDN\uff08\u5185\u5bb9\u5206\u53d1\u7f51\u7edc\uff09<\/li>\n<li>\u65e5\u5fd7\u5199\u5165\u72ec\u7acb\u78c1\u76d8\u6216\u8fdc\u7a0b\u65e5\u5fd7\u670d\u52a1\u5668<\/li>\n<\/ul>\n<p><strong>2. \u5f15\u5165\u7f13\u5b58\u5c42<\/strong><\/p>\n<pre><code class=\"language-bash\">## \u5b89\u88c5 Redis \u4f5c\u4e3a\u7f13\u5b58\u5c42\nsudo apt-get install redis-server -y\n\n## \u914d\u7f6e\u5e94\u7528\u4f7f\u7528 Redis \u7f13\u5b58\u70ed\u70b9\u6570\u636e\n## \u51cf\u5c11\u76f4\u63a5\u78c1\u76d8\u8bfb\u53d6\u6b21\u6570\n<\/code><\/pre>\n<p>\u7f13\u5b58\u53ef\u4ee5\u5c06 80% \u4ee5\u4e0a\u7684\u8bfb\u8bf7\u6c42\u62e6\u622a\u5728\u5185\u5b58\u5c42\uff0c\u5927\u5e45\u964d\u4f4e\u78c1\u76d8\u538b\u529b\u3002<\/p>\n<p><strong>3. \u4f18\u5316\u6570\u636e\u5e93\u914d\u7f6e<\/strong><\/p>\n<p>\u9488\u5bf9 MySQL\/MariaDB \u7684\u5173\u952e\u4f18\u5316\uff1a<\/p>\n<pre><code class=\"language-ini\">## my.cnf \u914d\u7f6e\u4f18\u5316\n[mysqld]\n## \u7f13\u51b2\u6c60\u5927\u5c0f\uff08\u5efa\u8bae\u4e3a\u5185\u5b58\u7684 50-70%\uff09\ninnodb_buffer_pool_size = 2G\n\n## \u65e5\u5fd7\u6587\u4ef6\u914d\u7f6e\ninnodb_log_file_size = 256M\ninnodb_log_buffer_size = 32M\n\n## \u5237\u76d8\u7b56\u7565\uff080=\u6700\u5feb\u4f46\u4e0d\u5b89\u5168\uff0c1=\u6700\u5b89\u5168\u4f46\u6162\uff0c2=\u6298\u4e2d\uff09\ninnodb_flush_log_at_trx_commit = 2\n\n## \u7981\u7528\u540c\u6b65\uff08\u6d4b\u8bd5\u73af\u5883\u9002\u7528\uff0c\u751f\u4ea7\u73af\u5883\u8c28\u614e\uff09\nsync_binlog = 0\n<\/code><\/pre>\n<h3>\u65b9\u6848 C\uff1a\u957f\u671f\u57fa\u7840\u8bbe\u65bd\u5347\u7ea7<\/h3>\n<p>\u5982\u679c\u4e0a\u8ff0\u4f18\u5316\u4ecd\u65e0\u6cd5\u6ee1\u8db3\u9700\u6c42\uff0c\u8003\u8651\u57fa\u7840\u8bbe\u65bd\u5347\u7ea7\uff1a<\/p>\n<p><strong>1. \u5347\u7ea7\u5230 NVMe SSD<\/strong><\/p>\n<p>NVMe SSD \u7684\u6027\u80fd\u662f\u4f20\u7edf SATA SSD \u7684 5-10 \u500d\uff0c\u9002\u5408\u9ad8\u5e76\u53d1\u573a\u666f\u3002<\/p>\n<p><strong>2. \u8fc1\u79fb\u5230\u72ec\u670d\uff08<a href=\"https:\/\/cn.hostease.com\/dedicated-server\/\">\u72ec\u7acb\u670d\u52a1\u5668<\/a>\uff09<\/strong><\/p>\n<p>\u72ec\u670d\u5b8c\u5168\u72ec\u4eab\u7269\u7406\u8d44\u6e90\uff0c\u4e0d\u5b58\u5728\u90bb\u5c45\u5e72\u6270\u95ee\u9898\u3002\u5bf9\u4e8e\u6838\u5fc3\u4e1a\u52a1\uff0c\u72ec\u670d\u662f\u6700\u7a33\u5b9a\u7684\u9009\u62e9\u3002<\/p>\n<p><strong>3. \u91c7\u7528\u5206\u5e03\u5f0f\u5b58\u50a8<\/strong><\/p>\n<p>\u5bf9\u4e8e\u8d85\u5927\u89c4\u6a21\u5e94\u7528\uff0c\u8003\u8651 Ceph\u3001GlusterFS \u7b49\u5206\u5e03\u5f0f\u5b58\u50a8\u65b9\u6848\uff0c\u901a\u8fc7\u591a\u8282\u70b9\u5e76\u884c IO \u63d0\u5347\u6574\u4f53\u6027\u80fd\u3002<\/p>\n<h2>\u6301\u7eed\u76d1\u63a7\u4e0e\u544a\u8b66<\/h2>\n<p>\u6027\u80fd\u6cbb\u7406\u4e0d\u662f\u4e00\u6b21\u6027\u5de5\u4f5c\uff0c\u9700\u8981\u5efa\u7acb\u6301\u7eed\u76d1\u63a7\u673a\u5236\u3002<\/p>\n<h3>\u76d1\u63a7\u6307\u6807<\/h3>\n<p>\u6301\u7eed\u76d1\u63a7\u65f6\uff0c\u6700\u503c\u5f97\u76ef\u7684\u4e0d\u662f\u4e00\u957f\u4e32\u6307\u6807\uff0c\u800c\u662f\u4e94\u4e2a\u6700\u5bb9\u6613\u76f4\u63a5\u53cd\u6620\u95ee\u9898\u7684\u70b9\uff1a\u78c1\u76d8\u5229\u7528\u7387\u662f\u5426\u957f\u65f6\u95f4\u9ad8\u4e8e 80%\uff0c<code>await<\/code> \u662f\u5426\u8d85\u8fc7 20ms\uff0c\u78c1\u76d8\u961f\u5217\u957f\u5ea6 <code>avgqu-sz<\/code> \u662f\u5426\u6301\u7eed\u9ad8\u4e8e 4\uff0c\u53ef\u7528\u7a7a\u95f4\u662f\u5426\u8dcc\u5230 20% \u4ee5\u4e0b\uff0c\u4ee5\u53ca inode \u4f7f\u7528\u7387\u662f\u5426\u903c\u8fd1 85%\u3002\u8fd9\u51e0\u4e2a\u6307\u6807\u7ec4\u5408\u5728\u4e00\u8d77\uff0c\u901a\u5e38\u5c31\u8db3\u591f\u5224\u65ad\u201c\u662f\u5076\u53d1\u6296\u52a8\u201d\u8fd8\u662f\u201c\u5b58\u50a8\u5c42\u5df2\u7ecf\u957f\u671f\u8fc7\u8f7d\u201d\u3002<\/p>\n<h3>\u76d1\u63a7\u811a\u672c\u793a\u4f8b<\/h3>\n<pre><code class=\"language-bash\">#!\/bin\/bash\n## disk_monitor.sh - \u78c1\u76d8 IO \u76d1\u63a7\u811a\u672c\n\nTHRESHOLD_UTIL=80\nTHRESHOLD_AWAIT=20\n\n## \u83b7\u53d6\u78c1\u76d8 IO \u7edf\u8ba1\nIO_STAT=$(iostat -x 1 1 | awk '\/^\\\/dev\/ {print $1, $11, $14}')\n\nwhile read -r device util await; do\n    if (( $(echo &quot;$util &gt; $THRESHOLD_UTIL&quot; | bc -l) )); then\n        echo &quot;\u8b66\u544a\uff1a$device \u78c1\u76d8\u5229\u7528\u7387 $util% \u8d85\u8fc7\u9608\u503c&quot;\n    fi\n    if (( $(echo &quot;$await &gt; $THRESHOLD_AWAIT&quot; | bc -l) )); then\n        echo &quot;\u8b66\u544a\uff1a$device IO \u7b49\u5f85\u65f6\u95f4 ${await}ms \u8d85\u8fc7\u9608\u503c&quot;\n    fi\ndone &lt;&lt;&lt; &quot;$IO_STAT&quot;\n<\/code><\/pre>\n<p>\u5c06\u811a\u672c\u52a0\u5165 cron \u5b9a\u65f6\u4efb\u52a1\uff0c\u6bcf 5 \u5206\u949f\u6267\u884c\u4e00\u6b21\uff0c\u5f02\u5e38\u65f6\u53d1\u9001\u90ae\u4ef6\u6216\u77ed\u4fe1\u544a\u8b66\u3002<\/p>\n<h3>\u53ef\u89c6\u5316\u76d1\u63a7<\/h3>\n<p>\u63a8\u8350\u4f7f\u7528\u7684\u53ef\u89c6\u5316\u65b9\u6848\u4e5f\u4e0d\u5fc5\u94fa\u592a\u5f00\uff1a\u5982\u679c\u4f60\u5e0c\u671b\u81ea\u5df1\u5b9a\u5236\u89c4\u5219\uff0cGrafana + Prometheus \u4ecd\u7136\u662f\u6700\u7075\u6d3b\u7684\u5f00\u6e90\u7ec4\u5408\uff1b\u5982\u679c\u4f60\u66f4\u60f3\u5feb\u901f\u843d\u5730\uff0cZabbix \u4f1a\u66f4\u7701\u914d\u7f6e\u65f6\u95f4\uff1b\u5982\u679c\u4e1a\u52a1\u672c\u6765\u5c31\u5728\u516c\u6709\u4e91\u4e0a\uff0c\u76f4\u63a5\u63a5\u5165\u4e91\u670d\u52a1\u5546\u81ea\u5e26\u76d1\u63a7\u5f80\u5f80\u662f\u6700\u7701\u8fd0\u7ef4\u6210\u672c\u7684\u9009\u62e9\u3002\u81f3\u4e8e DNS\uff08\u57df\u540d\u7cfb\u7edf\uff0c\u8d1f\u8d23\u628a\u57df\u540d\u89e3\u6790\u5230\u5bf9\u5e94\u670d\u52a1\u5668 IP\uff09\u548c\u5e26\u5bbd\uff08\u5355\u4f4d\u65f6\u95f4\u5185\u53ef\u4f20\u8f93\u7684\u6570\u636e\u91cf\uff09\u8fd9\u7c7b\u770b\u4f3c\u4e0d\u5728\u78c1\u76d8\u5c42\u7684\u95ee\u9898\uff0c\u4e5f\u5efa\u8bae\u4e00\u8d77\u7eb3\u5165\u540c\u4e00\u5757\u76d1\u63a7\u9762\u677f\uff0c\u56e0\u4e3a\u8de8\u8282\u70b9\u8bbf\u95ee\u548c\u5907\u4efd\u7a97\u53e3\u672c\u8eab\u5c31\u4f1a\u653e\u5927 IO \u6296\u52a8\u7684\u4f53\u611f\u3002<\/p>\n<p><img decoding=\"async\" alt=\"\u78c1\u76d8\u6027\u80fd\u76d1\u63a7\u9762\u677f\u793a\u4f8b\" src=\"https:\/\/cn.hostease.com\/blog\/wp-content\/uploads\/2026\/04\/vps-disk-io-jitter-storage-baseline-performance-dashboard.webp\" \/><\/p>\n<h2>\u603b\u7ed3\u4e0e\u4e0b\u4e00\u6b65\u884c\u52a8<\/h2>\n<p>\u78c1\u76d8 IO \u6296\u52a8\u662f VPS\uff08\u865a\u62df\u4e13\u7528\u670d\u52a1\u5668\uff09\u73af\u5883\u4e2d\u5e38\u89c1\u4f46\u5bb9\u6613\u88ab\u5ffd\u89c6\u7684\u6027\u80fd\u95ee\u9898\u3002\u901a\u8fc7\u672c\u6587\u7684\u65b9\u6cd5\uff0c\u4f60\u53ef\u4ee5\uff1a<\/p>\n<ul>\n<li><strong>\u5efa\u7acb\u5b58\u50a8\u57fa\u7ebf<\/strong>\uff1a\u4f7f\u7528 FIO \u548c DD \u8fdb\u884c\u591a\u7ef4\u5ea6\u6d4b\u8bd5<\/li>\n<li><strong>\u5b9a\u4f4d\u6839\u56e0<\/strong>\uff1a\u533a\u5206\u5bbf\u4e3b\u673a\u4e89\u62a2\u3001\u78c1\u76d8\u7c7b\u578b\u9650\u5236\u3001\u914d\u7f6e\u95ee\u9898<\/li>\n<li><strong>\u5b9e\u65bd\u6cbb\u7406<\/strong>\uff1a\u4ece\u5e94\u6025\u4f18\u5316\u5230\u67b6\u6784\u5347\u7ea7\u7684\u5206\u5c42\u65b9\u6848<\/li>\n<li><strong>\u6301\u7eed\u76d1\u63a7<\/strong>\uff1a\u5efa\u7acb\u544a\u8b66\u673a\u5236\uff0c\u9632\u60a3\u4e8e\u672a\u7136<\/li>\n<\/ul>\n<p><strong>\u5173\u952e\u5efa\u8bae<\/strong>\uff1a\u5b9a\u671f\uff08\u4f8b\u5982\u6bcf\u6708\u4e00\u6b21\uff09\u6267\u884c\u57fa\u7ebf\u6d4b\u8bd5\uff0c\u5efa\u7acb\u6027\u80fd\u8d8b\u52bf\u6863\u6848\uff1b\u6838\u5fc3\u4e1a\u52a1\u4f18\u5148\u8003\u8651\u72ec\u670d\u6216\u8d44\u6e90\u4fdd\u969c\u578b VPS \u65b9\u6848\uff1b\u7f13\u5b58\u5c42\u901a\u5e38\u662f\u6295\u5165\u4ea7\u51fa\u6bd4\u6700\u9ad8\u7684\u4e00\u6b65\uff1b\u6570\u636e\u5e93\u914d\u7f6e\u4f18\u5316\u5f80\u5f80\u80fd\u6700\u5feb\u5e26\u6765\u53ef\u89c1\u6539\u5584\u3002\u6587\u4e2d\u63d0\u5230\u7684\u6027\u80fd\u95e8\u69db\u548c\u5347\u7ea7\u5224\u65ad\uff0c\u9ed8\u8ba4\u4ee5 2026 \u5e74 4 \u6708\u5e38\u89c1 VPS \u4e0e SSD\/NVMe \u65b9\u6848\u7684\u516c\u5f00\u8868\u73b0\u4e3a\u53c2\u8003\uff0c\u771f\u6b63\u6267\u884c\u65f6\u4ecd\u5e94\u4ee5\u4f60\u7684\u673a\u623f\u3001\u5957\u9910\u548c\u5b9e\u65f6\u76d1\u63a7\u6570\u636e\u4e3a\u51c6\u3002<\/p>\n<p>\u5b58\u50a8\u6027\u80fd\u662f\u7f51\u7ad9\u7a33\u5b9a\u6027\u7684\u57fa\u77f3\uff0c\u503c\u5f97\u6301\u7eed\u6295\u5165\u548c\u4f18\u5316\u3002<\/p>\n<p>\u5982\u679c\u4f60\u63a5\u4e0b\u6765\u8fd8\u8981\u7ee7\u7eed\u6536\u6027\u80fd\u4fa7\u95ee\u9898\uff0c\u53ef\u4ee5\u987a\u7740 <a href=\"https:\/\/cn.hostease.com\/blog\/guides\/cc-attack-emergency-waf-rate-limit-origin-protection\/\">CC \u653b\u51fb\u9632\u62a4\u5b8c\u6574\u6307\u5357\uff1aWAF \u89c4\u5219\u3001\u9650\u901f\u4e0e\u6e90\u7ad9\u5e94\u6025\u914d\u7f6e<\/a> \u548c <a href=\"https:\/\/cn.hostease.com\/blog\/guides\/cross-border-dns-optimization-authoritative-ttl-multi-line\/\">\u8de8\u5883\u4e1a\u52a1 DNS \u89e3\u6790\u6162\u4f18\u5316\uff1a\u6743\u5a01 DNS\u3001TTL \u4e0e\u591a\u7ebf\u8def\u670d\u52a1\u5668\u8c03\u5ea6<\/a> \u5f80\u4e0b\u770b\uff0c\u628a IO\u3001\u7f51\u7edc\u548c\u6e90\u7ad9\u9632\u62a4\u653e\u5230\u540c\u4e00\u5957\u6027\u80fd\u68c0\u67e5\u6e05\u5355\u91cc\u3002\u66f4\u5b9e\u9645\u7684\u52a8\u4f5c\u662f\u628a\u672c\u6587\u7684\u6d4b\u8bd5\u6b65\u9aa4\u6574\u7406\u6210\u4e00\u5f20\u6bcf\u6708\u590d\u6838\u8868\uff0c\u56fa\u5b9a\u65f6\u95f4\u6267\u884c\u4e00\u6b21\uff0c\u8fd9\u6837\u4f60\u4f1a\u66f4\u5bb9\u6613\u53d1\u73b0\u201c\u6027\u80fd\u5728\u6162\u6162\u4e0b\u6ed1\u201d\uff0c\u800c\u4e0d\u662f\u7b49\u7528\u6237\u6295\u8bc9\u4e4b\u540e\u624d\u56de\u5934\u6392\u67e5\u3002\u5982\u679c\u4f60\u5df2\u7ecf\u786e\u8ba4\u4e1a\u52a1\u5728\u9ad8\u5cf0\u671f\u6301\u7eed\u51fa\u73b0 IO \u7b49\u5f85\u98d9\u5347\u3001\u6570\u636e\u5e93\u8d85\u65f6\u6216\u5907\u4efd\u7a97\u53e3\u660e\u663e\u62c9\u957f\uff0c\u53ef\u4ee5\u8003\u8651\u5148\u4ece NVMe \u65b9\u6848\u3001\u7f13\u5b58\u5c42\u548c\u72ec\u670d\u5019\u9009\u91cc\u6311\u4e00\u9879\u6700\u5bb9\u6613\u843d\u5730\u7684\u4f18\u5316\u5f00\u59cb\uff0c\u800c\u4e0d\u662f\u540c\u65f6\u6539\u52a8\u6574\u5957\u67b6\u6784\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u8be6\u7ec6\u8bb2\u89e3\u5982\u4f55\u8bca\u65ad\u548c\u5904\u7406 VPS\uff08\u865a\u62df\u4e13\u7528\u670d\u52a1\u5668\uff09\u78c1\u76d8 IO 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