{"id":104512,"date":"2022-06-27T03:36:42","date_gmt":"2022-06-27T01:36:42","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/primenenie-asinhronnoj-buferizirovannoj-zapisi-na-baze-io_uring-do-80-raz-snizilo-zaderzhki-v-xfs"},"modified":"2022-06-27T03:36:42","modified_gmt":"2022-06-27T01:36:42","slug":"primenenie-asinhronnoj-buferizirovannoj-zapisi-na-baze-io_uring-do-80-raz-snizilo-zaderzhki-v-xfs","status":"publish","type":"post","link":"https:\/\/prohoster.info\/en\/blog\/news\/primenenie-asinhronnoj-buferizirovannoj-zapisi-na-baze-io_uring-do-80-raz-snizilo-zaderzhki-v-xfs","title":{"rendered":"The application of asynchronous buffered writing based on io_uring has reduced latency in XFS by up to 80 times.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

A series of patches has been released for inclusion in the Linux 5.20 kernel, adding support for asynchronous buffered writes to the XFS file system using the io_uring mechanism. Preliminary performance tests conducted with the fio tool (1 thread, block size 4KB, 600 seconds, sequential write) show an increase in input\/output operations per second (IOPS) from 77k to 209k, data transfer speeds from 314MB\/s to 854MB\/s, and a reduction in latencies from 9600ns to 120ns (an 80-fold decrease). sequential writes: without patch with patch libaio psync iops: 77k 209k 195K 233K bw: 314MB\/s 854MB\/s 790MB\/s 953MB\/s clat: 9600ns 120ns 540ns 3000ns <\/p>\n

For those interested in the state of io_uring as of mid-2022, it is recommended to check out the slides and video recording of the talk from Kernel Recipes 2022. The changes that have already been incorporated into the kernel and those planned are mentioned, such as support for: <\/p>\n