Messages in this thread | | | Subject | Re: [memcg] 0f12156dff: will-it-scale.per_process_ops -33.6% regression | From | Jens Axboe <> | Date | Tue, 7 Sep 2021 09:46:48 -0600 |
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On 9/7/21 9:07 AM, kernel test robot wrote: > > > Greeting, > > FYI, we noticed a -33.6% regression of will-it-scale.per_process_ops due to commit: > > > commit: 0f12156dff2862ac54235fc72703f18770769042 ("memcg: enable accounting for file lock caches") > https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master
Are we at all worried about these? There's been a number of them reported, basically for all the accounting enablements that have been done in this merge window.
When io_uring was switched to use accounted memory, we did a bunch of work to ameliorate the inevitable slowdowns that happen if you do repeated allocs and/or frees and have memcg accounting enabled.
-- Jens Axboe
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