linux-kernel - Re: [net] ceb5d58b21: -69.2% fsmark.files_per

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Date:	Thu, 24 Dec 2015 05:17:08 -0800
From:	Eric Dumazet <edumazet@...gle.com>
To:	kernel test robot <ying.huang@...ux.intel.com>
Cc:	lkp@...org, LKML <linux-kernel@...r.kernel.org>,
	Dmitry Vyukov <dvyukov@...gle.com>,
	"David S. Miller" <davem@...emloft.net>
Subject: Re: [net] ceb5d58b21: -69.2% fsmark.files_per_sec

On Wed, Dec 23, 2015 at 9:49 PM, kernel test robot
<ying.huang@...ux.intel.com> wrote:
> FYI, we noticed the below changes on
>
> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
> commit ceb5d58b217098a657f3850b7a2640f995032e62 ("net: fix sock_wake_async() rcu protection")
>
>
> =========================================================================================
> compiler/cpufreq_governor/disk/filesize/fs2/fs/iterations/kconfig/nr_threads/rootfs/sync_method/tbox_group/test_size/testcase:
>   gcc-4.9/performance/1BRD_48G/4M/nfsv4/xfs/1x/x86_64-rhel/64t/debian-x86_64-2015-02-07.cgz/NoSync/lkp-hsx04/40G/fsmark
>
> commit:
>   9cd3e072b0be17446e37d7414eac8a3499e0601e
>   ceb5d58b217098a657f3850b7a2640f995032e62
>
> 9cd3e072b0be1744 ceb5d58b217098a657f3850b7a
> ---------------- --------------------------
>          %stddev     %change         %stddev

> Thanks,
> Ying Huang

Hi Ying. I have no idea what these confusing numbers mean.

Is your benchmark running faster (good thing) or slower (sorry, but we
fixed a bug)

Thanks.
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