From: Janani Ravichandran <janani.rvchndrn@gmail.com>
To: Michal Hocko <mhocko@kernel.org>
Cc: Janani Ravichandran <janani.rvchndrn@gmail.com>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org,
riel@surriel.com, akpm@linux-foundation.org,
vdavydov@virtuozzo.com, vbabka@suse.cz,
mgorman@techsingularity.net, rostedt@goodmis.org
Subject: Re: [RFC] scripts: Include postprocessing script for memory allocation tracing
Date: Thu, 22 Sep 2016 11:30:36 -0400 [thread overview]
Message-ID: <BFAF8DCA-F4A6-41C6-9AA0-C694D33035A3@gmail.com> (raw)
In-Reply-To: <20160919094224.GH10785@dhcp22.suse.cz>
> On Sep 19, 2016, at 5:42 AM, Michal Hocko <mhocko@kernel.org> wrote:
>
> On Tue 13-09-16 14:04:49, Janani Ravichandran wrote:
>>
>>> On Sep 12, 2016, at 8:16 AM, Michal Hocko <mhocko@kernel.org> wrote:
>>
>> I’m using the function graph tracer to see how long __alloc_pages_nodemask()
>> took.
>
> How can you map the function graph tracer to a specif context? Let's say
> I would like to know why a particular allocation took so long. Would
> that be possible?
Maybe not. If the latencies are due to direct reclaim or memory compaction, you
get some information from the tracepoints (like mm_vmscan_direct_reclaim_begin,
mm_compaction_begin, etc). But otherwise, you don’t get any context information.
Function graph only gives the time spent in alloc_pages_nodemask() in that case.
Regards,
Janani.
>
> --
> Michal Hocko
> SUSE Labs
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org. For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>
next prev parent reply other threads:[~2016-09-23 5:51 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-09-11 22:24 Janani Ravichandran
2016-09-12 12:16 ` Michal Hocko
2016-09-13 18:04 ` Janani Ravichandran
2016-09-19 9:42 ` Michal Hocko
2016-09-22 15:30 ` Janani Ravichandran [this message]
2016-09-23 8:07 ` Michal Hocko
2016-10-06 12:00 ` Michal Hocko
2016-10-11 14:43 ` Janani Ravichandran
2016-10-15 23:31 ` Janani Ravichandran
2016-10-16 7:33 ` Michal Hocko
[not found] ` <CANnt6X=RpSnuxGXZfF6Qa5mJpzC8gL3wkKJi3tQMZJBZJVWF3w@mail.gmail.com>
2016-10-17 17:31 ` Janani Ravichandran
2016-10-18 13:13 ` Michal Hocko
2016-10-20 23:10 ` Janani Ravichandran
2016-10-21 7:08 ` Michal Hocko
2016-10-27 15:42 ` Janani Ravichandran
-- strict thread matches above, loose matches on Subject: below --
2016-08-19 11:38 Janani Ravichandran
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=BFAF8DCA-F4A6-41C6-9AA0-C694D33035A3@gmail.com \
--to=janani.rvchndrn@gmail.com \
--cc=akpm@linux-foundation.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=mgorman@techsingularity.net \
--cc=mhocko@kernel.org \
--cc=riel@surriel.com \
--cc=rostedt@goodmis.org \
--cc=vbabka@suse.cz \
--cc=vdavydov@virtuozzo.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox