From: David Sterba <dsterba@suse.cz>
To: kernel test robot <oliver.sang@intel.com>
Cc: Boris Burkov <boris@bur.io>,
oe-lkp@lists.linux.dev, lkp@intel.com,
linux-kernel@vger.kernel.org, David Sterba <dsterba@suse.com>,
linux-btrfs@vger.kernel.org, ying.huang@intel.com,
feng.tang@intel.com, fengwei.yin@intel.com
Subject: Re: [linus:master] [btrfs] 52bb7a2166: filebench.sum_operations/s -4.0% regression
Date: Tue, 2 May 2023 18:27:20 +0200 [thread overview]
Message-ID: <20230502162720.GL8111@twin.jikos.cz> (raw)
In-Reply-To: <202304292249.93ef60fb-oliver.sang@intel.com>
On Sat, Apr 29, 2023 at 10:29:00PM +0800, kernel test robot wrote:
>
> Hello,
>
> kernel test robot noticed a -4.0% regression of filebench.sum_operations/s on:
>
>
> commit: 52bb7a2166af490317ce2cca1865b6630e86aca8 ("btrfs: introduce size class to block group allocator")
> https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master
The size classes are a heuristic, it may improve and worsen some
workloads and also depends on actual layout of extents and block groups.
So this is expected, -4% is within acceptable range.
prev parent reply other threads:[~2023-05-02 16:33 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-04-29 14:29 kernel test robot
2023-05-02 16:27 ` David Sterba [this message]
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