{"id":33431,"date":"2026-09-29T10:00:00","date_gmt":"2026-09-29T02:00:00","guid":{"rendered":"https:\/\/cn.hostease.com\/blog\/?p=33431"},"modified":"2026-10-08T10:54:45","modified_gmt":"2026-10-08T02:54:45","slug":"cloud-server-ssd-trim-fstrim","status":"publish","type":"post","link":"https:\/\/cn.hostease.com\/blog\/guides\/cloud-server-ssd-trim-fstrim\/","title":{"rendered":"\u4e91\u670d\u52a1\u5668 SSD TRIM \u5b9a\u671f\u7ef4\u62a4\uff1afstrim \u914d\u7f6e\u4e0e\u78c1\u76d8\u7626\u8eab"},"content":{"rendered":"<p>\u4f60\u7684\u4e91\u670d\u52a1\u5668\uff08\u57fa\u4e8e\u865a\u62df\u5316\u6280\u672f\u7684\u5f39\u6027\u670d\u52a1\u5668\uff09\u7528\u4e86\u5927\u534a\u5e74\u540e\uff0c\u6709\u6ca1\u6709\u53d1\u73b0\u78c1\u76d8\u5199\u5165\u8d8a\u6765\u8d8a\u6162\uff1a\u6570\u636e\u5e93\u5bfc\u5165\u8017\u65f6\u7ffb\u500d\u3001\u5907\u4efd\u6253\u5305\u6bd4\u4ee5\u524d\u4e45\u3001\u9762\u677f\u76d1\u63a7\u91cc\u78c1\u76d8 I\/O \u7b49\u5f85\u6084\u6084\u5347\u9ad8\uff1f\u5f88\u591a\u4eba\u7b2c\u4e00\u53cd\u5e94\u662f\u5347\u7ea7\u914d\u7f6e\uff0c\u4f46\u771f\u6b63\u7684\u6839\u6e90\u5f80\u5f80\u66f4\u7b80\u5355\u2014\u2014SSD \u957f\u671f\u8fd0\u884c\u540e\u6ca1\u6709\u505a TRIM\uff08\u56fa\u6001\u786c\u76d8\u5783\u573e\u56de\u6536\u6307\u4ee4\uff09\uff0c\u6587\u4ef6\u7cfb\u7edf\u91cc\u5927\u91cf&#8221;\u903b\u8f91\u4e0a\u5df2\u5220\u9664\u3001\u7269\u7406\u4e0a\u4ecd\u5360\u7528&#8221;\u7684\u6570\u636e\u5757\u6ca1\u6709\u88ab\u56de\u6536\uff0c\u4e3b\u63a7\u8981\u82b1\u66f4\u591a\u65f6\u95f4\u505a\u6574\u7406\uff0c\u6027\u80fd\u81ea\u7136\u4e00\u8def\u4e0b\u6ed1\u3002\u672c\u6587\u6559\u4f60\u5982\u4f55\u5224\u65ad TRIM \u662f\u5426\u7f3a\u5931\u3001\u5982\u4f55\u914d\u7f6e fstrim \u5b9a\u671f\u7ef4\u62a4\u8ba1\u5212\uff0c\u5e76\u914d\u5408\u78c1\u76d8\u7626\u8eab\u8ba9 SSD \u6062\u590d\u5230\u63a5\u8fd1\u51fa\u5382\u7684\u5199\u5165\u901f\u5ea6\u3002\u6574\u4e2a\u8fc7\u7a0b\u53ea\u9700\u8981\u51e0\u6761\u547d\u4ee4\uff0c\u4e0d\u9700\u8981\u505c\u673a\uff0c\u4e5f\u4e0d\u4f1a\u52a8\u5230\u4f60\u7684\u4e1a\u52a1\u6570\u636e\u3002<\/p>\n<p><!--more--><\/p>\n<h2>\u4e3a\u4ec0\u4e48 SSD \u4e0d\u505a TRIM \u4f1a\u8d8a\u7528\u8d8a\u6162<\/h2>\n<p>\u8981\u7406\u89e3 fstrim \u7684\u4ef7\u503c\uff0c\u5f97\u5148\u5f04\u6e05 SSD \u7684\u5199\u5165\u673a\u5236\u3002SSD\uff08\u56fa\u6001\u786c\u76d8\uff09\u4e0d\u80fd\u50cf\u673a\u68b0\u786c\u76d8\u90a3\u6837\u76f4\u63a5\u8986\u76d6\u65e7\u6570\u636e\uff1a\u5199\u5165\u5fc5\u987b\u4ee5&#8221;\u5757&#8221;\u4e3a\u5355\u4f4d\u5148\u64e6\u9664\u518d\u5199\uff0c\u4e3b\u63a7\u5b8c\u5168\u4e0d\u77e5\u9053\u6587\u4ef6\u7cfb\u7edf\u91cc\u54ea\u4e9b\u6570\u636e\u5757\u5df2\u7ecf\u88ab\u5220\u9664\u4e86\u3002\u4f60\u5728\u670d\u52a1\u5668\u4e0a\u6267\u884c <code>rm<\/code> \u6216\u8005\u5e94\u7528\u6eda\u52a8\u6e05\u7406\u65e5\u5fd7\u540e\uff0c\u6587\u4ef6\u7cfb\u7edf\u53ea\u662f\u628a\u5bf9\u5e94\u5757\u6807\u8bb0\u4e3a&#8221;\u53ef\u7528&#8221;\uff0c\u7269\u7406\u5c42\u9762\u8fd9\u4e9b\u5757\u4ecd\u88ab\u65e7\u6570\u636e\u5360\u7740\u3002\u6ca1\u6709 TRIM \u7684\u60c5\u51b5\u4e0b\uff0cSSD \u4e3b\u63a7\u59cb\u7ec8\u8ba4\u4e3a\u8fd9\u4e9b\u5757\u662f\u6709\u6548\u6570\u636e\uff0c\u6bcf\u6b21\u5199\u5165\u90fd\u8981\u5148\u642c\u79fb\u518d\u64e6\u9664\uff0c\u8fd9\u5c31\u662f\u5199\u5165\u653e\u5927\uff08Write Amplification\uff09\u88ab\u63a8\u9ad8\u7684\u76f4\u63a5\u539f\u56e0\u3002<\/p>\n<p>\u5b9e\u6d4b\u6570\u636e\u80fd\u8bf4\u660e\u5dee\u8ddd\uff1a\u5728\u4e00\u5757\u6301\u7eed\u8fd0\u884c\u4e00\u5e74\u3001\u4ece\u672a\u505a\u8fc7 TRIM \u7684 240GB \u7cfb\u7edf\u76d8\u4e0a\uff0c\u987a\u5e8f\u5199\u5165\u901f\u5ea6\u53ef\u80fd\u4ece\u6807\u79f0\u7684 500MB\/s \u6389\u5230 150MB\/s \u5de6\u53f3\uff0c\u8870\u51cf\u8d85\u8fc7\u4e00\u534a\uff1b\u800c\u505a\u8fc7\u4e00\u6b21\u5b8c\u6574 TRIM \u5e76\u7b49\u5f85\u5783\u573e\u56de\u6536\u540e\uff0c\u540c\u6837\u7684\u6d4b\u8bd5\u901a\u5e38\u80fd\u6062\u590d\u5230 400MB\/s \u4ee5\u4e0a\u3002\u5bf9\u8dd1\u6570\u636e\u5e93\u3001WordPress \u7ad9\u70b9\u6216\u9891\u7e41\u5199\u65e5\u5fd7\u7684\u4e1a\u52a1\u6765\u8bf4\uff0c\u8fd9\u79cd\u5dee\u8ddd\u4f1a\u76f4\u63a5\u4f53\u73b0\u5728\u67e5\u8be2\u8017\u65f6\u548c\u9875\u9762\u54cd\u5e94\u4e0a\u3002<\/p>\n<p>\u5224\u65ad\u670d\u52a1\u5668\u6709\u6ca1\u6709\u505a TRIM\uff0c\u53ef\u4ee5\u7528\u4e24\u6761\u547d\u4ee4\u5feb\u901f\u786e\u8ba4\uff1a<\/p>\n<pre><code class=\"language-bash\"># \u67e5\u770b SSD \u662f\u5426\u652f\u6301 TRIM\uff08\u8f93\u51fa\u4e2d\u975e\u96f6\u8868\u793a\u652f\u6301\uff09\ncat \/sys\/block\/sda\/queue\/discard_granularity\n# \u67e5\u770b\u6587\u4ef6\u7cfb\u7edf\u6302\u8f7d\u65f6\u662f\u5426\u542f\u7528\u4e86 discard \u9009\u9879\nfindmnt -no OPTIONS \/\n<\/code><\/pre>\n<p>\u591a\u6570\u4e91\u670d\u52a1\u5668\u7684 SSD \u652f\u6301 TRIM\uff0c\u4f46\u9ed8\u8ba4\u5e76\u6ca1\u6709\u4e00\u4e2a\u6301\u7eed\u751f\u6548\u7684\u56de\u6536\u673a\u5236\uff0c\u8fd9\u6b63\u662f\u9700\u8981 fstrim \u51fa\u573a\u7684\u539f\u56e0\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/cn.hostease.com\/blog\/wp-content\/uploads\/2026\/10\/cloud-server-ssd-trim-fstrim-cover.webp\" alt=\"SSD \u5185\u90e8\u6570\u636e\u5757\u88ab\u65e7\u6570\u636e\u5360\u7528\u5bfc\u81f4\u5199\u5165\u53d8\u6162\u7684\u793a\u610f\" loading=\"lazy\" \/><\/p>\n<h2>\u5982\u4f55\u914d\u7f6e fstrim \u5b9a\u671f\u7ef4\u62a4\u4efb\u52a1<\/h2>\n<p>\u4e3b\u6d41\u53d1\u884c\u7248\uff08Debian\/Ubuntu\u3001RHEL \u7cfb\u5217\uff09\u5df2\u7ecf\u81ea\u5e26 <code>fstrim.timer<\/code>\uff0c\u4f46\u4e0d\u5c11\u955c\u50cf\u4e3a\u4e86\u517c\u5bb9\u6027\u9ed8\u8ba4\u5173\u95ed\u4e86\u5b83\u3002\u914d\u7f6e\u7684\u7b2c\u4e00\u6b65\u662f\u786e\u8ba4\u8ba1\u65f6\u5668\u72b6\u6001\uff1a<\/p>\n<pre><code class=\"language-bash\"># \u67e5\u770b\u5b9a\u65f6\u5668\u662f\u5426\u542f\u7528\u4ee5\u53ca\u4e0a\u6b21\u8fd0\u884c\u65f6\u95f4\nsystemctl status fstrim.timer\nsystemctl list-timers fstrim.timer\n<\/code><\/pre>\n<p>\u5982\u679c\u663e\u793a <code>inactive<\/code> \u6216 <code>disabled<\/code>\uff0c\u4e24\u6761\u547d\u4ee4\u5f00\u542f\u5e76\u7acb\u5373\u542f\u52a8\uff1a<\/p>\n<pre><code class=\"language-bash\">sudo systemctl enable --now fstrim.timer\n<\/code><\/pre>\n<p><code>fstrim.timer<\/code> \u9ed8\u8ba4\u6bcf\u5468\u6267\u884c\u4e00\u6b21 <code>fstrim -av<\/code>\uff0c\u5bf9\u6240\u6709\u652f\u6301\u7684\u6587\u4ef6\u7cfb\u7edf\u505a\u5168\u91cf\u56de\u6536\u3002\u5468\u4e2d\u51cc\u6668\u6267\u884c\u5bf9\u4f60\u7684\u4e1a\u52a1\u51e0\u4e4e\u6ca1\u6709\u611f\u77e5\uff0c\u4e0d\u9700\u8981\u989d\u5916\u8c03\u6574\u3002\u5982\u679c\u4f60\u60f3\u9a8c\u8bc1\u5b83\u771f\u7684\u5728\u5de5\u4f5c\uff0c\u53ef\u4ee5\u624b\u52a8\u8dd1\u4e00\u6b21\u5e76\u89c2\u5bdf\u8f93\u51fa\uff1a<\/p>\n<pre><code class=\"language-bash\">sudo fstrim -av\n# \u5178\u578b\u8f93\u51fa\uff1a\/: 18.5 GiB (19854237696 bytes) trimmed\n<\/code><\/pre>\n<p>\u7b2c\u4e00\u6b21\u6267\u884c\u65f6\uff0c\u8fd9\u4e2a\u6570\u5b57\u5f80\u5f80\u4f1a\u5927\u5230\u5413\u4eba\u2014\u2014\u51e0\u5341 GB \u90fd\u5f88\u5e38\u89c1\uff0c\u8fd9\u6b63\u662f\u957f\u671f\u672a\u56de\u6536\u7684&#8221;\u50f5\u5c38\u6570\u636e\u5757&#8221;\u3002\u8dd1\u5b8c\u540e\u7b49\u5f85\u51e0\u5206\u949f\u8ba9\u4e3b\u63a7\u5b8c\u6210\u5783\u573e\u56de\u6536\uff0c\u518d\u505a\u4e00\u6b21\u5199\u5165\u6d4b\u8bd5\uff0c\u5bf9\u6bd4 <code>fstrim<\/code> \u524d\u540e\u7684\u5dee\u5f02\u3002\u5efa\u8bae\u628a\u8fd9\u6b21\u8f93\u51fa\u8bb0\u4e0b\u6765\uff0c\u540e\u7eed\u5de1\u68c0\u65f6\u5982\u679c\u6bcf\u6b21 trimmed \u7684\u91cf\u957f\u671f\u7ef4\u6301\u5728\u51e0 GB \u4ee5\u4e0a\uff0c\u8bf4\u660e\u5199\u5165\u5220\u9664\u9891\u7e41\uff0c\u53ef\u4ee5\u9002\u5f53\u628a\u6267\u884c\u9891\u7387\u8c03\u9ad8\u5230\u6bcf\u5929\uff08\u4fee\u6539\u8ba1\u65f6\u5668\u7684 <code>OnCalendar<\/code> \u5373\u53ef\uff09\u3002<\/p>\n<p>\u8fd9\u7c7b\u56de\u6536\u673a\u5236\u548c<a href=\"https:\/\/cn.hostease.com\/blog\/guides\/ttfb-hosting-optimization\/\">TTFB \u4e0e\u4e3b\u673a\u4f18\u5316<\/a>\u7684\u601d\u8def\u662f\u4e00\u4f53\u7684\uff1a\u5b58\u50a8\u5c42\u505a TRIM\uff0c\u5e94\u7528\u5c42\u505a\u7f13\u5b58\u4e0e\u4f20\u8f93\u4f18\u5316\uff0c\u4e24\u8005\u53e0\u52a0\u624d\u80fd\u8ba9\u6574\u673a\u4fdd\u6301\u6d41\u7545\u3002\u6709\u4e24\u79cd\u60c5\u51b5\u8981\u7279\u522b\u6ce8\u610f\u3002\u5176\u4e00\u662f RAID\uff08\u72ec\u7acb\u5197\u4f59\u78c1\u76d8\u9635\u5217\uff09\u9635\u5217\u6216 LVM \u5377\uff1aTRIM \u6307\u4ee4\u8981\u9010\u5c42\u900f\u4f20\uff0c\u4efb\u4f55\u4e00\u5c42\u6ca1\u542f\u7528 discard \u652f\u6301\u90fd\u4f1a\u8ba9\u56de\u6536\u9759\u9ed8\u5931\u6548\uff0c\u53ef\u4ee5\u7528 <code>lsblk --discard<\/code> \u6838\u5bf9\u6bcf\u5c42\u7684 DISC-GRAN\/DISC-MAX \u662f\u5426\u4e3a\u975e\u96f6\u3002\u5176\u4e8c\u662f\u6781\u5c11\u6570\u4ecd\u4f7f\u7528 ext4 \u4e4b\u5916\u65e7\u6587\u4ef6\u7cfb\u7edf\u7684\u6570\u636e\u76d8\uff0cXFS \u4ece\u5185\u6838 4.18 \u8d77\u624d\u7a33\u5b9a\u652f\u6301\u5728\u7ebf discard\uff0c\u8001\u5185\u6838\u5efa\u8bae\u76f4\u63a5\u4f9d\u8d56 fstrim \u6279\u91cf\u56de\u6536\u800c\u4e0d\u662f\u6302\u8f7d discard \u9009\u9879\u3002<\/p>\n<h2>\u914d\u5408\u78c1\u76d8\u7626\u8eab\uff1a\u628a\u7a7a\u95f4\u771f\u6b63\u8fd8\u7ed9 SSD<\/h2>\n<p>TRIM \u56de\u6536\u7684\u662f&#8221;\u6587\u4ef6\u7cfb\u7edf\u5df2\u7ecf\u6807\u8bb0\u5220\u9664&#8221;\u7684\u5757\uff0c\u5982\u679c\u78c1\u76d8\u672c\u8eab\u5df2\u7ecf\u88ab\u6570\u636e\u586b\u6ee1\uff0cTRIM \u80fd\u505a\u7684\u4e5f\u6709\u9650\u3002SSD \u7684\u5199\u5165\u6027\u80fd\u548c\u7a7a\u95f2\u7a7a\u95f4\u6bd4\u4f8b\u76f4\u63a5\u76f8\u5173\uff1a\u5f53\u53ef\u7528\u7a7a\u95f4\u4f4e\u4e8e 20% \u65f6\uff0c\u4e3b\u63a7\u6ca1\u6709\u8db3\u591f\u7684\u9884\u7559\u5757\u505a\u78e8\u635f\u5747\u8861\uff0c\u6027\u80fd\u8870\u51cf\u4f1a\u660e\u663e\u52a0\u901f\u3002\u6240\u4ee5 TRIM \u5b9a\u671f\u7ef4\u62a4\u8981\u548c\u78c1\u76d8\u7626\u8eab\u914d\u5408\u505a\uff0c\u624d\u80fd\u7ef4\u6301\u957f\u671f\u7a33\u5b9a\u3002<\/p>\n<p>\u7626\u8eab\u5148\u4ece\u6700\u80fd&#8221;\u85cf\u4e1c\u897f&#8221;\u7684\u51e0\u4e2a\u4f4d\u7f6e\u5165\u624b\u3002\u65e5\u5fd7\u6587\u4ef6\u7ecf\u5e38\u662f\u7b2c\u4e00\u540d\uff1a<code>journalctl --disk-usage<\/code> \u5148\u770b\u770b systemd \u65e5\u5fd7\u5360\u4e86\u591a\u5c11\uff0c\u8d85\u8fc7 1GB \u5c31\u7528 <code>sudo journalctl --vacuum-size=500M<\/code> \u6536\u7f29\uff1b\u5e94\u7528\u65e5\u5fd7\uff08Nginx\u3001PHP-FPM\u3001\u5e94\u7528\u6846\u67b6\uff09\u68c0\u67e5\u662f\u5426\u6709\u8f6e\u8f6c\u914d\u7f6e\uff0c\u6ca1\u914d\u7684\u7528 logrotate \u8865\u4e0a\u3002\u65e7\u5185\u6838\u548c\u8f6f\u4ef6\u5305\u7f13\u5b58\u6392\u7b2c\u4e8c\uff1a<code>sudo apt autoremove --purge<\/code> \u4e00\u6b21\u80fd\u6e05\u6389\u51e0\u767e MB \u5230\u51e0 GB \u7684\u65e7\u5185\u6838\uff0c<code>sudo apt clean<\/code> \u518d\u91ca\u653e\u5305\u7f13\u5b58\u3002Docker \u7528\u6237\u8fd8\u8981\u591a\u770b\u4e00\u773c\uff1a<code>docker system df<\/code> \u5217\u51fa\u60ac\u7a7a\u955c\u50cf\u3001\u505c\u6b62\u7684\u5bb9\u5668\u548c\u6784\u5efa\u7f13\u5b58\uff0c<code>docker system prune -af<\/code> \u901a\u5e38\u80fd\u610f\u5916\u56de\u6536 10GB \u4ee5\u4e0a\uff0c\u6e05\u7406\u540e\u518d\u5bf9\u6302\u8f7d\u7684 overlay \u6587\u4ef6\u7cfb\u7edf\u8dd1\u4e00\u6b21 <code>fstrim<\/code>\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/cn.hostease.com\/blog\/wp-content\/uploads\/2026\/10\/cloud-server-ssd-trim-fstrim-cleanup.webp\" alt=\"\u78c1\u76d8\u6e05\u7406\u524d\u540e\u53ef\u7528\u7a7a\u95f4\u5bf9\u6bd4\u7684\u793a\u610f\" loading=\"lazy\" \/><\/p>\n<p>\u7626\u8eab\u7684\u53e6\u4e00\u4e2a\u4f5c\u7528\u662f\u7ed9 TRIM&#8221;\u9012\u5200\u5b50&#8221;\uff1a<code>fstrim -av<\/code> \u8f93\u51fa\u7684 trimmed \u6570\u91cf\uff0c\u672c\u8d28\u4e0a\u5c31\u662f\u6587\u4ef6\u7cfb\u7edf\u91cc\u5df2\u5220\u9664\u4f46\u672a\u56de\u6536\u7684\u7a7a\u95f4\u3002\u5b9a\u671f\u6e05\u7406\u8ba9\u8fd9\u4e2a\u6570\u5b57\u4fdd\u6301\u5065\u5eb7\u6c34\u5e73\uff0cTRIM \u6bcf\u6b21\u6267\u884c\u7684\u65f6\u95f4\u4e5f\u4ece\u51e0\u5341\u79d2\u7f29\u77ed\u5230\u51e0\u79d2\uff0c\u5bf9\u5171\u4eab\u540c\u4e00\u7269\u7406\u5b58\u50a8\u7684\u90bb\u5c45\u79df\u6237\u4e5f\u66f4\u53cb\u597d\u3002\u5982\u679c\u4f60\u5728\u8bc4\u4f30<a href=\"https:\/\/cn.hostease.com\/blog\/server\/\">\u670d\u52a1\u5668\u914d\u7f6e<\/a>\u9009\u578b\uff0c\u53ef\u4ee5\u53c2\u8003\u8fd9\u7bc7<a href=\"https:\/\/cn.hostease.com\/blog\/guides\/cloud-server-buying-guide\/\">\u4e91\u670d\u52a1\u5668\u9009\u8d2d\u6307\u5357<\/a>\uff0c\u628a\u78c1\u76d8\u7c7b\u578b\u3001IOPS \u6307\u6807\u548c\u9884\u7559\u7a7a\u95f4\u6bd4\u4f8b\u4e00\u8d77\u7eb3\u5165\u6bd4\u8f83\u7ef4\u5ea6\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/cn.hostease.com\/blog\/wp-content\/uploads\/2026\/10\/cloud-server-ssd-trim-fstrim-maintain.webp\" alt=\"\u5b9a\u671f TRIM \u8ba9 SSD \u4fdd\u6301\u7a33\u5b9a\u5199\u5165\u901f\u5ea6\u7684\u793a\u610f\" loading=\"lazy\" \/><\/p>\n<h2>\u9a8c\u8bc1 TRIM \u771f\u7684\u751f\u6548\u4e86<\/h2>\n<p>\u914d\u7f6e\u5b8c\u4e0d\u7b49\u4e8e\u751f\u6548\uff0c\u6700\u540e\u8981\u7528\u6570\u636e\u95ed\u73af\u9a8c\u8bc1\u3002\u4e09\u6b65\u5c31\u591f\uff1a<\/p>\n<ul>\n<li><code>systemctl list-timers fstrim.timer<\/code> \u786e\u8ba4\u4e0b\u6b21\u89e6\u53d1\u65f6\u95f4\u5b58\u5728\uff0c\u4e14 <code>Last trigger<\/code> \u663e\u793a\u6700\u8fd1\u786e\u5b9e\u8dd1\u8fc7\u4e00\u6b21<\/li>\n<li>\u624b\u52a8\u6267\u884c <code>fstrim -av<\/code>\uff0c\u8f93\u51fa\u7684 trimmed \u5b57\u8282\u6570\u5e94\u4e3a\u975e\u96f6\uff1b\u8fde\u7eed\u4e24\u6b21\u6267\u884c\uff0c\u7b2c\u4e8c\u6b21\u63a5\u8fd1\u96f6\u662f\u6b63\u5e38\u7684\uff08\u8bf4\u660e\u4e0a\u4e00\u6b21\u5df2\u7ecf\u56de\u6536\u5e72\u51c0\uff09<\/li>\n<li>\u7528 <code>dd<\/code> \u6216 <code>fio<\/code> \u505a\u4e00\u6b21\u5199\u5165\u57fa\u51c6\u6d4b\u8bd5\uff0c\u5bf9\u6bd4\u7ef4\u62a4\u524d\u540e\u7684\u987a\u5e8f\u5199\u5165\u901f\u5ea6\uff0c\u6b63\u5e38\u5e94\u80fd\u6062\u590d 30% \u4ee5\u4e0a<\/li>\n<\/ul>\n<p>\u8fd9\u4e09\u4e2a\u52a8\u4f5c\u5efa\u8bae\u76f4\u63a5\u5199\u8fdb\u73b0\u6709\u7684\u5de1\u68c0\u811a\u672c\u3002TRIM \u4f9d\u8d56\u7684 discard \u652f\u6301\u94fe\u6761\u4e0a\u4efb\u4f55\u4e00\u73af\u53d8\u52a8\uff08\u6bd4\u5982\u6362\u955c\u50cf\u3001\u6269\u5bb9\u78c1\u76d8\u91cd\u5efa\u9635\u5217\uff09\uff0c\u90fd\u53ef\u80fd\u8ba9\u56de\u6536\u9759\u9ed8\u5931\u6548\uff0c\u5b9a\u671f\u8f93\u51fa\u80fd\u7b2c\u4e00\u65f6\u95f4\u53d1\u73b0\u5f02\u5e38\u3002<\/p>\n<h2>\u603b\u7ed3\u4e0e\u884c\u52a8\u5efa\u8bae<\/h2>\n<p>SSD \u8d8a\u7528\u8d8a\u6162\u4e0d\u662f\u7384\u5b66\uff0c\u800c\u662f\u7f3a\u5c11\u5b9a\u671f\u56de\u6536\u7684\u5fc5\u7136\u7ed3\u679c\u3002\u6838\u5fc3\u7ed3\u8bba\u662f\uff1a\u786e\u8ba4 SSD \u652f\u6301 discard \u2192 \u542f\u7528 <code>fstrim.timer<\/code> \u2192 \u624b\u52a8\u8dd1\u4e00\u6b21 <code>fstrim -av<\/code> \u5e76\u8bb0\u5f55\u8f93\u51fa \u2192 \u914d\u5408\u65e5\u5fd7\u6e05\u7406\u4e0e\u78c1\u76d8\u7626\u8eab\u4fdd\u6301 20% \u4ee5\u4e0a\u7a7a\u95f2\u7a7a\u95f4 \u2192 \u6bcf\u6b21\u5de1\u68c0\u6838\u5bf9 trimmed \u6570\u91cf\u3002\u6574\u5957\u52a8\u4f5c\u52a0\u8d77\u6765\u4e0d\u5230\u534a\u5c0f\u65f6\uff0c\u6362\u6765\u7684\u662f\u78c1\u76d8\u6027\u80fd\u7684\u957f\u671f\u7a33\u5b9a\u3002<\/p>\n<p>\u5982\u679c\u4f60\u9700\u8981\u4e00\u53f0\u5f00\u7bb1\u5373\u7ef4\u62a4\u597d\u7684<a href=\"https:\/\/cn.hostease.com\/vps\/\">\u4e91\u670d\u52a1\u5668<\/a>\uff0cHostease \u7684\u65b9\u6848\u5728\u7cfb\u7edf\u5c42\u9762\u9884\u7f6e\u4e86\u5e38\u89c4\u7ef4\u62a4\u4efb\u52a1\uff0c\u540c\u65f6\u63d0\u4f9b<a href=\"https:\/\/cn.hostease.com\/blog\/server\/\">\u670d\u52a1\u5668\u6027\u80fd\u4f18\u5316<\/a>\u65b9\u9762\u7684\u7cfb\u5217\u6559\u7a0b\u3002\u5efa\u8bae\u628a\u672c\u6587\u7684 TRIM \u68c0\u67e5\u6b65\u9aa4\u52a0\u5165\u4f60\u7684\u670d\u52a1\u5668\u4ea4\u63a5\u6e05\u5355\u2014\u2014\u6bcf\u4e00\u53f0\u65b0\u63a5\u624b\u7684\u670d\u52a1\u5668\uff0c\u90fd\u503c\u5f97\u5148\u8dd1\u4e00\u6b21 <code>fstrim -av<\/code> \u770b\u770b\u5b83\u6b20\u4e86\u591a\u5c11&#8221;\u7ef4\u62a4\u503a&#8221;\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e91\u670d\u52a1\u5668 SSD \u957f\u671f\u8fd0\u884c\u540e\u5199\u5165\u53d8\u6162\u7684\u89e3\u51b3\u65b9\u6cd5\uff1a\u5982\u4f55\u7528 fstrim \u914d\u7f6e\u5b9a\u671f TRIM\u3001\u9a8c\u8bc1 TRIM \u662f\u5426\u751f\u6548\uff0c\u5e76\u901a\u8fc7\u78c1\u76d8\u7626\u8eab\u91ca\u653e SSD \u53ef\u7528\u7a7a\u95f4\u3002<\/p>\n","protected":false},"author":2,"featured_media":33428,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[3822],"tags":[5179,5178,111,5181,5180],"class_list":["post-33431","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-guides","tag-fstrim","tag-ssdtrim","tag-111","tag-5181","tag-5180"],"aioseo_notices":[],"jetpack_featured_media_url":"https:\/\/cn.hostease.com\/blog\/wp-content\/uploads\/2026\/10\/cloud-server-ssd-trim-fstrim-cover.webp","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/posts\/33431","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/comments?post=33431"}],"version-history":[{"count":1,"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/posts\/33431\/revisions"}],"predecessor-version":[{"id":33444,"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/posts\/33431\/revisions\/33444"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/media\/33428"}],"wp:attachment":[{"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/media?parent=33431"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/categories?post=33431"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/tags?post=33431"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}