Messages in this thread | | | Date | Tue, 9 May 2023 16:54:33 +1000 | From | Dave Chinner <> | Subject | Re: [linus:master] [xfs] 2edf06a50f: fsmark.files_per_sec -5.7% regression |
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On Tue, May 09, 2023 at 10:13:19AM +0800, kernel test robot wrote: > > > Hello, > > kernel test robot noticed a -5.7% regression of fsmark.files_per_sec on: > > > commit: 2edf06a50f5bbe664283f3c55c480fc013221d70 ("xfs: factor xfs_alloc_vextent_this_ag() for _iterate_ags()") > https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master
This is just a refactoring patch and doesn't change any logic. Hence I'm sceptical that it actually resulted in a performance regression. Indeed, the profile indicates a significant change of behaviour in the allocator and I can't see how the commit above would cause anything like that.
Was this a result of a bisect? If so, what were the original kernel versions where the regression was detected?
Cheers,
Dave.
-- Dave Chinner david@fromorbit.com
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