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Subject: Re: hugepage compaction causes performance drop
References: <20151119092920.GA11806@aaronlu.sh.intel.com>
 <564DCEA6.3000802@suse.cz> <564EDFE5.5010709@intel.com>
 <564EE8FD.7090702@intel.com> <564EF0B6.10508@suse.cz>
 <20151123081601.GA29397@js1304-P5Q-DELUXE> <5652CF40.6040400@intel.com>
 <CAAmzW4M6oJukBLwucByK89071RukF4UEyt02A7ZjenpPr5rsdQ@mail.gmail.com>
 <5653DC2C.3090706@intel.com> <20151124045536.GA3112@js1304-P5Q-DELUXE>
From: Aaron Lu <aaron.lu@intel.com>
Message-ID: <5654116F.1030301@intel.com>
Date: Tue, 24 Nov 2015 15:27:43 +0800
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Sender: owner-linux-mm@kvack.org
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To: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Vlastimil Babka <vbabka@suse.cz>, Linux Memory Management List <linux-mm@kvack.org>, Huang Ying <ying.huang@intel.com>, Dave Hansen <dave.hansen@intel.com>, Tim Chen <tim.c.chen@linux.intel.com>, lkp@lists.01.org, Andrea Arcangeli <aarcange@redhat.com>, David Rientjes <rientjes@google.com>

On 11/24/2015 12:55 PM, Joonsoo Kim wrote:
> On Tue, Nov 24, 2015 at 11:40:28AM +0800, Aaron Lu wrote:
>> BTW, I'm still learning how to do proper ftrace for this case and it may
>> take a while.
> 
> You can do it simply with trace-cmd.
> 
> sudo trace-cmd record -e compaction &
> run test program
> fg
> Ctrl + c
> 
> sudo trace-cmd report

Thanks for the tip, I just recorded it like this:
trace-cmd record -e compaction ./usemem xxx

Due to the big size of trace.out(6MB after compress), I've uploaed it:
https://drive.google.com/open?id=0B49uX3igf4K4UkJBOGt3cHhOU00

The pagetypeinfo, perf and proc-vmstat is also there.

Regards,
Aaron

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