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Linux 7.0 EXT4 改进并发直接 I/O 性能

  • 2026-02-26 12:10:58
Linux 7.0 EXT4 改进并发直接 I/O 性能

Linux 7.0 EXT4 改进并发直接 I/O 性能 💾

Linux 7.0 已经合并了 EXT4 的多项更新，重点优化了在处理指向多个文件的并发直接 I/O 写入时的性能表现。
🔹 通过将未写入范围的分拆操作推迟到 I/O 完成时进行，显著提升了并发直接 I/O 写入的性能。
🔹 避免了在扩展区状态缓存中进行不必要的缓存失效操作，避免了在向使用延迟分配的文件追加内容时进行不必要的强制顺序写入，同时还包含了各种错误修复。
🔹 引入了名为 err_report_sec 的 sysfs 属性，用于控制错误报告计时器，以确定记录文件系统不一致检测警告消息的频率。
🔹 默认情况下，错误报告计时器每24小时会记录一条警告消息，但通过 err_report_sec sysfs 属性可以轻松进行配置，或者将其设置为零来禁用计时器。
💭 此次 EXT4 的更新不仅在底层写入逻辑上进行了性能压榨，还通过新增的配置属性为系统管理员提供了更灵活的错误监控手段。
#EXT4 #文件系统 #Linux内核

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      138. /yingpanguazai/ssd/ssd1/www/f.mffb.com.cn/vendor/topthink/think-template/src/template/contract/DriverInterface.php ( 0.86 KB )
      139. /yingpanguazai/ssd/ssd1/www/f.mffb.com.cn/runtime/temp/067d451b9a0c665040f3f1bdd3293d68.php ( 11.98 KB )
      140. /yingpanguazai/ssd/ssd1/www/f.mffb.com.cn/vendor/topthink/think-trace/src/Html.php ( 4.42 KB )
      1. CONNECT:[ UseTime:0.000388s ] mysql:host=127.0.0.1;port=3306;dbname=f_mffb;charset=utf8mb4
      2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000898s ]
      3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000262s ]
      4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.001104s ]
      5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000699s ]
      6. SELECT * FROM `set` [ RunTime:0.000252s ]
      7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000795s ]
      8. SELECT * FROM `article` WHERE `id` = 476338 LIMIT 1 [ RunTime:0.000448s ]
      9. UPDATE `article` SET `lasttime` = 1772233896 WHERE `id` = 476338 [ RunTime:0.001893s ]
      10. SELECT * FROM `fenlei` WHERE `id` = 67 LIMIT 1 [ RunTime:0.001682s ]
      11. SELECT * FROM `article` WHERE `id` < 476338 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.001123s ]
      12. SELECT * FROM `article` WHERE `id` > 476338 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.001115s ]
      13. SELECT * FROM `article` WHERE `id` < 476338 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.020225s ]
      14. SELECT * FROM `article` WHERE `id` < 476338 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.028800s ]
      15. SELECT * FROM `article` WHERE `id` < 476338 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.009276s ]
      0.136320s