From: Christoph Hellwig <hch@lst.de>
To: Linus Torvalds <torvalds@linux-foundation.org>
Cc: "Huang, Ying" <ying.huang@intel.com>,
Christoph Hellwig <hch@lst.de>,
Dave Chinner <david@fromorbit.com>,
LKML <linux-kernel@vger.kernel.org>,
Bob Peterson <rpeterso@redhat.com>,
Wu Fengguang <fengguang.wu@intel.com>, LKP <lkp@01.org>
Subject: Re: [LKP] [lkp] [xfs] 68a9f5e700: aim7.jobs-per-min -13.6% regression
Date: Fri, 12 Aug 2016 00:08:54 +0200 [thread overview]
Message-ID: <20160811220854.GA30146@lst.de> (raw)
In-Reply-To: <CA+55aFx=mbAd0hEnji-TWZH_NReLLk+SbJHK1s+=r1_USV0KXw@mail.gmail.com>
I'll need to dig into what AIM7 actually does in this benchmark, which
isn't too easy as I'm on a business trip currently, but from the list
below it looks like it keeps overwriting and overwriting a file that's
already been allocated. This is a pretty stupid workload, but fortunately
it should also be able to be optimized by skipping the actual block
lookup, which is what the old buffer.c code happens to do.
next prev parent reply other threads:[~2016-08-11 22:08 UTC|newest]
Thread overview: 109+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-08-09 14:33 [lkp] [xfs] 68a9f5e700: aim7.jobs-per-min -13.6% regression kernel test robot
2016-08-10 18:24 ` Linus Torvalds
2016-08-10 23:08 ` Dave Chinner
2016-08-10 23:51 ` Linus Torvalds
2016-08-10 23:58 ` [LKP] " Huang, Ying
2016-08-11 0:11 ` Huang, Ying
2016-08-11 0:23 ` Linus Torvalds
2016-08-11 0:33 ` Huang, Ying
2016-08-11 1:00 ` Linus Torvalds
2016-08-11 4:46 ` Dave Chinner
2016-08-15 17:22 ` Huang, Ying
2016-08-16 0:08 ` Dave Chinner
2016-08-11 15:57 ` Christoph Hellwig
2016-08-11 16:55 ` Linus Torvalds
2016-08-11 17:51 ` Huang, Ying
2016-08-11 19:51 ` Linus Torvalds
2016-08-11 20:00 ` Christoph Hellwig
2016-08-11 20:35 ` Linus Torvalds
2016-08-11 22:16 ` Al Viro
2016-08-11 22:30 ` Linus Torvalds
2016-08-11 21:16 ` Huang, Ying
2016-08-11 21:40 ` Linus Torvalds
2016-08-11 22:08 ` Christoph Hellwig [this message]
2016-08-12 0:54 ` Dave Chinner
2016-08-12 2:23 ` Dave Chinner
2016-08-12 2:32 ` Linus Torvalds
2016-08-12 2:52 ` Christoph Hellwig
2016-08-12 3:20 ` Linus Torvalds
2016-08-12 4:16 ` Dave Chinner
2016-08-12 5:02 ` Linus Torvalds
2016-08-12 6:04 ` Dave Chinner
2016-08-12 6:29 ` Ye Xiaolong
2016-08-12 8:51 ` Ye Xiaolong
2016-08-12 10:02 ` Dave Chinner
2016-08-12 10:43 ` Fengguang Wu
2016-08-13 0:30 ` [LKP] [lkp] " Christoph Hellwig
2016-08-13 21:48 ` Christoph Hellwig
2016-08-13 22:07 ` Fengguang Wu
2016-08-13 22:15 ` Christoph Hellwig
2016-08-13 22:51 ` Fengguang Wu
2016-08-14 14:50 ` Fengguang Wu
2016-08-14 16:17 ` Christoph Hellwig
2016-08-14 23:46 ` Dave Chinner
2016-08-14 23:57 ` Fengguang Wu
2016-08-15 14:14 ` Fengguang Wu
2016-08-15 21:22 ` Dave Chinner
2016-08-16 12:20 ` Fengguang Wu
2016-08-15 20:30 ` Huang, Ying
2016-08-22 22:09 ` Huang, Ying
2016-09-26 6:25 ` Huang, Ying
2016-09-26 14:55 ` Christoph Hellwig
2016-09-27 0:52 ` Huang, Ying
2016-08-16 13:25 ` Fengguang Wu
2016-08-13 23:32 ` Dave Chinner
2016-08-12 2:27 ` Linus Torvalds
2016-08-12 3:56 ` Dave Chinner
2016-08-12 18:03 ` Linus Torvalds
2016-08-13 23:58 ` Fengguang Wu
2016-08-15 0:48 ` Dave Chinner
2016-08-15 1:37 ` Linus Torvalds
2016-08-15 2:28 ` Dave Chinner
2016-08-15 2:53 ` Linus Torvalds
2016-08-15 5:00 ` Dave Chinner
[not found] ` <CA+55aFwva2Xffai+Eqv1Jn_NGryk3YJ2i5JoHOQnbQv6qVPAsw@mail.gmail.com>
[not found] ` <CA+55aFy14nUnJQ_GdF=j8Fa9xiH70c6fY2G3q5HQ01+8z1z3qQ@mail.gmail.com>
[not found] ` <CA+55aFxp+rLehC8c157uRbH459wUC1rRPfCVgvmcq5BrG9gkyg@mail.gmail.com>
2016-08-15 22:22 ` Dave Chinner
2016-08-15 22:42 ` Dave Chinner
2016-08-15 23:20 ` Linus Torvalds
2016-08-15 23:48 ` Linus Torvalds
2016-08-16 0:44 ` Dave Chinner
2016-08-16 15:05 ` Mel Gorman
2016-08-16 17:47 ` Linus Torvalds
2016-08-17 15:48 ` Michal Hocko
2016-08-17 16:42 ` Michal Hocko
2016-08-17 15:49 ` Mel Gorman
2016-08-18 0:45 ` Mel Gorman
2016-08-18 7:11 ` Dave Chinner
2016-08-18 13:24 ` Mel Gorman
2016-08-18 17:55 ` Linus Torvalds
2016-08-18 21:19 ` Dave Chinner
2016-08-18 22:25 ` Linus Torvalds
2016-08-19 9:00 ` Michal Hocko
2016-08-19 10:49 ` Mel Gorman
2016-08-19 23:48 ` Dave Chinner
2016-08-20 1:08 ` Linus Torvalds
2016-08-20 12:16 ` Mel Gorman
2016-08-19 15:08 ` Mel Gorman
2016-09-01 23:32 ` Dave Chinner
2016-09-06 15:37 ` Mel Gorman
2016-09-06 15:52 ` Huang, Ying
2016-08-24 15:40 ` Huang, Ying
2016-08-25 9:37 ` Mel Gorman
2016-08-18 2:44 ` Dave Chinner
2016-08-16 0:15 ` Linus Torvalds
2016-08-16 0:38 ` Dave Chinner
2016-08-16 0:50 ` Linus Torvalds
2016-08-16 0:19 ` Dave Chinner
2016-08-16 1:51 ` Linus Torvalds
2016-08-16 22:02 ` Dave Chinner
2016-08-16 23:23 ` Linus Torvalds
2016-08-15 23:01 ` Linus Torvalds
2016-08-16 0:17 ` Dave Chinner
2016-08-16 0:45 ` Linus Torvalds
2016-08-15 5:03 ` Ingo Molnar
2016-08-17 16:24 ` Peter Zijlstra
2016-08-15 12:58 ` Fengguang Wu
2016-08-11 1:16 ` Dave Chinner
2016-08-11 1:32 ` Dave Chinner
2016-08-11 2:36 ` Ye Xiaolong
2016-08-11 3:05 ` Dave Chinner
2016-08-12 1:26 ` Dave Chinner
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