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Message-ID: <20191211144018.GG14655@dhcp22.suse.cz>
Date: Wed, 11 Dec 2019 15:40:18 +0100
From: Michal Hocko <mhocko@...nel.org>
To: "zhangyi (F)" <yi.zhang@...wei.com>
Cc: linux-kernel@...r.kernel.org, akpm@...ux-foundation.org,
cl@...ux.com, gregkh@...uxfoundation.org, mgalbraith@...e.de,
torvalds@...ux-foundation.org, umgwanakikbuti@...il.com,
wagi@...om.org, stable-commits@...r.kernel.org,
"Wangkefeng (Maro)" <wangkefeng.wang@...wei.com>,
Xie XiuQi <xiexiuqi@...wei.com>
Subject: Re: Patch "mm, vmstat: make quiet_vmstat lighter" has been added to
the 4.4-stable tree
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
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