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Date:   Fri, 14 Apr 2023 07:24:58 +0200
From:   Christoph Hellwig <hch@lst.de>
To:     kernel test robot <yujie.liu@intel.com>
Cc:     Christoph Hellwig <hch@lst.de>, oe-lkp@lists.linux.dev,
        lkp@intel.com, linux-kernel@vger.kernel.org,
        David Sterba <dsterba@suse.com>,
        Johannes Thumshirn <johannes.thumshirn@wdc.com>,
        Anand Jain <anand.jain@oracle.com>,
        linux-btrfs@vger.kernel.org, ying.huang@intel.com,
        feng.tang@intel.com, fengwei.yin@intel.com
Subject: Re: [linus:master] [btrfs] 4ae2edf12d: fio.write_iops -11.9%
 regression
Message-ID: <20230414052458.GA11616@lst.de>
References: <202304140917.9e9f5c1-yujie.liu@intel.com>
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On Fri, Apr 14, 2023 at 10:01:51AM +0800, kernel test robot wrote:
> Hello,
> 
> kernel test robot noticed a -11.9% regression of fio.write_iops on:
> 
> commit: 4ae2edf12d49fdbaea2dfda0bb2ec06501bd3493 ("btrfs: simplify parameters of btrfs_lookup_bio_sums")
> https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master

Can you revalidate this?  The patch is purely a parameter passing
cleanup, so a large reduction in IOPS looks very suspicious.