From: Max Kellermann <max.kellermann@ionos.com>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Oliver Sang <oliver.sang@intel.com>,
oe-lkp@lists.linux.dev, lkp@intel.com,
Linux Memory Management List <linux-mm@kvack.org>,
linux-kernel@vger.kernel.org, ying.huang@intel.com,
feng.tang@intel.com, fengwei.yin@intel.com
Subject: Re: [linux-next:master] [drivers/char/mem] 1b057bd800: stress-ng.splice.ops_per_sec -99.8% regression
Date: Wed, 18 Oct 2023 10:12:21 +0200 [thread overview]
Message-ID: <CAKPOu+9bZtu80NncqLET_ycZcWynZFHuWGRC4HU2Od9NrsjnCw@mail.gmail.com> (raw)
In-Reply-To: <2023101836-backtalk-mystified-d197@gregkh>
On Wed, Oct 18, 2023 at 9:57 AM Greg Kroah-Hartman
<gregkh@linuxfoundation.org> wrote:
> That's odd given that as was pointed out, this test does not even touch
> the code paths that this patch changed.
I think I mixed up the "vmsplice" and the "splice" tests, and my
conclusion was wrong, sorry.
This performance regression is about the "splice" test which indeed
uses /dev/zero. I'll have a closer look and get back to you.
next prev parent reply other threads:[~2023-10-18 8:12 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-10-17 15:06 kernel test robot
2023-10-17 16:56 ` Greg Kroah-Hartman
2023-10-18 6:31 ` Max Kellermann
2023-10-18 7:07 ` Oliver Sang
2023-10-18 7:57 ` Greg Kroah-Hartman
2023-10-18 8:12 ` Max Kellermann [this message]
2023-10-18 10:01 ` Max Kellermann
[not found] ` <CAKPOu+_T8xk4yd2P4KT4j3eMoFqwYmkxqDHaFtv4Hii5-XyPuA@mail.gmail.com>
2023-10-18 11:12 ` Max Kellermann
2023-10-19 5:41 ` Oliver Sang
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