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Date:   Tue, 25 Jun 2019 23:17:26 -0400
From:   Josef Bacik <josef@...icpanda.com>
To:     Rong Chen <rong.a.chen@...el.com>
Cc:     Josef Bacik <josef@...icpanda.com>,
        "Huang, Ying" <ying.huang@...el.com>,
        David Sterba <dsterba@...e.com>, lkp@...org,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: [LKP] [btrfs] c8eaeac7b7: aim7.jobs-per-min -11.7% regression

On Wed, Jun 26, 2019 at 10:39:36AM +0800, Rong Chen wrote:
> On 6/25/19 10:22 PM, Josef Bacik wrote:
> > On Fri, Jun 21, 2019 at 08:48:03AM +0800, Huang, Ying wrote:
> > > "Huang, Ying" <ying.huang@...el.com> writes:
> > > 
> > > > "Huang, Ying" <ying.huang@...el.com> writes:
> > > > 
> > > > > Hi, Josef,
> > > > > 
> > > > > kernel test robot <rong.a.chen@...el.com> writes:
> > > > > 
> > > > > > Greeting,
> > > > > > 
> > > > > > FYI, we noticed a -11.7% regression of aim7.jobs-per-min due to commit:
> > > > > > 
> > > > > > 
> > > > > > commit: c8eaeac7b734347c3afba7008b7af62f37b9c140 ("btrfs: reserve
> > > > > > delalloc metadata differently")
> > > > > > https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master
> > > > > > 
> > > > > > in testcase: aim7
> > > > > > on test machine: 40 threads Intel(R) Xeon(R) CPU E5-2690 v2 @ 3.00GHz with 384G memory
> > > > > > with following parameters:
> > > > > > 
> > > > > > 	disk: 4BRD_12G
> > > > > > 	md: RAID0
> > > > > > 	fs: btrfs
> > > > > > 	test: disk_rr
> > > > > > 	load: 1500
> > > > > > 	cpufreq_governor: performance
> > > > > > 
> > > > > > test-description: AIM7 is a traditional UNIX system level benchmark
> > > > > > suite which is used to test and measure the performance of multiuser
> > > > > > system.
> > > > > > test-url: https://sourceforge.net/projects/aimbench/files/aim-suite7/
> > > > > Here's another regression, do you have time to take a look at this?
> > > > Ping
> > > Ping again ...
> > > 
> > Finally got time to look at this but I can't get the reproducer to work
> > 
> > root@...tiny ~/lkp-tests# bin/lkp run ~/job-aim.yaml
> > Traceback (most recent call last):
> >          11: from /root/lkp-tests/bin/run-local:18:in `<main>'
> >          10: from /usr/share/rubygems/rubygems/core_ext/kernel_require.rb:54:in `require'
> >           9: from /usr/share/rubygems/rubygems/core_ext/kernel_require.rb:54:in `require'
> >           8: from /root/lkp-tests/lib/yaml.rb:5:in `<top (required)>'
> >           7: from /usr/share/rubygems/rubygems/core_ext/kernel_require.rb:54:in `require'
> >           6: from /usr/share/rubygems/rubygems/core_ext/kernel_require.rb:54:in `require'
> >           5: from /root/lkp-tests/lib/common.rb:9:in `<top (required)>'
> >           4: from /usr/share/rubygems/rubygems/core_ext/kernel_require.rb:54:in `require'
> >           3: from /usr/share/rubygems/rubygems/core_ext/kernel_require.rb:54:in `require'
> >           2: from /root/lkp-tests/lib/array_ext.rb:3:in `<top (required)>'
> >           1: from /usr/share/rubygems/rubygems/core_ext/kernel_require.rb:54:in `require'
> > /usr/share/rubygems/rubygems/core_ext/kernel_require.rb:54:in `require': cannot load such file -- active_support/core_ext/enumerable (LoadError)
> 
> Hi Josef,
> 
> I tried the latest lkp-tests, and didn't have the problem. Could you please
> update the lkp-tests repo and run "lkp install" again?
> 

I updated it this morning, and I just updated it now, my tree is on

2c5b1a95b08dbe81bba64419c482a877a3b424ac

lkp install says everything is installed except

No match for argument: libipc-run-perl

and it still doesn't run properly.  Thanks,

Josef

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