On 12/15/20 11:47 AM, Linus Torvalds wrote: > On Tue, Dec 15, 2020 at 10:44 AM Jens Axboe <axboe@xxxxxxxxx> wrote: >> >> In usecs again, same test, this time just using io_uring: >> >> Cached 5.10-git 5.10-git+LOOKUP_NONBLOCK >> -------------------------------------------------------- >> 33% 1,014,975 900,474 >> 100% 435,636 151,475 > > Ok, that's quite convincing. Thanks, Just for completeness, here's 89% (tool is pretty basic, closest I can get to 90%): Cached 5.10-git 5.10-git+LOOKUP_NONBLOCK -------------------------------------------------------- 89% 545,466 292,937 which is about an 1.8x win, where 100% is a 2.8x win. And for comparison, doing the same thing with the regular openat2() system call takes 867,897 usec. -- Jens Axboe
