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Date: Sun, 30 Sep 2018 10:17:04 +0200
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Subject: Re: [LKP] [mm/swap]  d884021f52:  will-it-scale.per_process_ops
 -2.4% regression
Message-ID: <20180930081704.ncajd6rv23qnv237@linutronix.de>
References: <20180914145924.22055-2-bigeasy@linutronix.de>
 <20180930031640.GG15893@shao2-debian>
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To: kernel test robot <rong.a.chen@intel.com>
Cc: linux-mm@kvack.org, tglx@linutronix.de, Vlastimil Babka <vbabka@suse.cz>, frederic@kernel.org, lkp@01.org

On 2018-09-30 11:16:41 [+0800], kernel test robot wrote:
> Greeting,
> 
> FYI, we noticed a -2.4% regression of will-it-scale.per_process_ops due to commit:
> 
> 
> commit: d884021f52609407c7943705b3e54b1642fa10cb ("[PATCH 1/2] mm/swap: Add pagevec locking")

-2.4% regression reads to me like an improvement of 2.4%. Which is odd
because I wouldn't expect a change in behaviour from 1/2. 2/2 yes, under
certain workloads but not from 1/2.

Sebastian