linux-kernel - Re: [LKP] [btrfs] c8eaeac7b7: aim7.jobs-per-min -11.7% regression

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Date:   Wed, 26 Jun 2019 10:39:36 +0800
From:   Rong Chen <rong.a.chen@...el.com>
To:     Josef Bacik <josef@...icpanda.com>,
        "Huang, Ying" <ying.huang@...el.com>
Cc:     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 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?

Thanks,
Rong Chen


>
> I can't even figure out from the job file or anything how I'm supposed to run
> AIM7 itself.  This is on a Fedora 30 box, so it's relatively recent.  Thanks,
>
> Josef