From: Michal Hocko <mhocko@kernel.org>
To: "zhangyi (F)" <yi.zhang@huawei.com>
Cc: linux-kernel@vger.kernel.org, akpm@linux-foundation.org,
cl@linux.com, gregkh@linuxfoundation.org, mgalbraith@suse.de,
torvalds@linux-foundation.org, umgwanakikbuti@gmail.com,
wagi@monom.org, stable-commits@vger.kernel.org,
"Wangkefeng (Maro)" <wangkefeng.wang@huawei.com>,
Xie XiuQi <xiexiuqi@huawei.com>
Subject: Re: Patch "mm, vmstat: make quiet_vmstat lighter" has been added to the 4.4-stable tree
Date: Wed, 11 Dec 2019 15:40:18 +0100 [thread overview]
Message-ID: <20191211144018.GG14655@dhcp22.suse.cz> (raw)
In-Reply-To: <e4bd396a-1a10-1387-aa3f-4d61d31ab7b6@huawei.com>
On Wed 11-12-19 22:32:49, zhangyi (F) wrote:
> Hi, all
>
> We find a performance degradation under lmbench af_unix[1] test case after
> mergeing this patch on my x86 qemu 4.4 machine. The test result is basically
> stable for each teses.
>
> Host machine: CPU: Intel(R) Xeon(R) CPU E5-2690 v3
> CPU(s): 48
> MEM: 193047 MB
>
> Guest machine: CPU: QEMU Virtual CPU version 2.5+
> CPU(s): 8
> MEM: 26065 MB
Does the same happen on the bare metal? Also what are the numbers for
the current vanilla kernel?
--
Michal Hocko
SUSE Labs
next prev parent reply other threads:[~2019-12-11 14:40 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <156442332854185@kroah.com>
2019-12-11 14:32 ` zhangyi (F)
2019-12-11 14:40 ` Michal Hocko [this message]
2019-12-11 14:46 ` Greg KH
2019-12-11 15:54 ` Daniel Wagner
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