linux-kernel - Re: [LKP] [lkp] [xfs] 68a9f5e700: aim7.jobs-per-min -13.6% regression

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Date:	Sun, 14 Aug 2016 06:07:27 +0800
From:	Fengguang Wu <fengguang.wu@...el.com>
To:	Christoph Hellwig <hch@....de>
Cc:	Dave Chinner <david@...morbit.com>,
	Ye Xiaolong <xiaolong.ye@...el.com>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Bob Peterson <rpeterso@...hat.com>, LKP <lkp@...org>
Subject: Re: [LKP] [lkp] [xfs] 68a9f5e700: aim7.jobs-per-min -13.6% regression

Hi Christoph,

On Sat, Aug 13, 2016 at 11:48:25PM +0200, Christoph Hellwig wrote:
>On Sat, Aug 13, 2016 at 02:30:54AM +0200, Christoph Hellwig wrote:
>> Below is a patch I hacked up this morning to do just that.  It passes
>> xfstests, but I've not done any real benchmarking with it.  If the
>> reduced lookup overhead in it doesn't help enough we'll need to some
>> sort of look aside cache for the information, but I hope that we
>> can avoid that.  And yes, it's a rather large patch - but the old
>> path was so entangled that I couldn't come up with something lighter.
>
>Hi Fengguang or Xiaolong,
>
>any chance to add this thread to a lkp run?

Sure. To which base should I apply it? Or if you already pushed the
git tree, I'll test your commit directly.

Thanks,
Fengguang