Messages in this thread | | | Subject | Re: [iov_iter] 9bd0e337c6: will-it-scale.per_process_ops -4.8% regression | From | Jens Axboe <> | Date | Thu, 3 Dec 2020 10:50:03 -0700 |
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On 12/3/20 10:47 AM, Linus Torvalds wrote: > On Wed, Dec 2, 2020 at 10:31 PM kernel test robot <oliver.sang@intel.com> wrote: >> >> FYI, we noticed a -4.8% regression of will-it-scale.per_process_ops due to commit: > > Ok, I guess that's bigger than expected, but the profile data does > show how bad the indirect branches are.
It's also in the same range (3-6%) as the microbenchmarks I ran and posted. So at least there's correlation there too.
-- Jens Axboe
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