From: Arnaldo Carvalho de Melo <acme@kernel.org>
To: Namhyung Kim <namhyung@kernel.org>
Cc: Ingo Molnar <mingo@kernel.org>,
Peter Zijlstra <a.p.zijlstra@chello.nl>,
Jiri Olsa <jolsa@redhat.com>, LKML <linux-kernel@vger.kernel.org>,
David Ahern <dsahern@gmail.com>, Minchan Kim <minchan@kernel.org>,
Joonsoo Kim <js1304@gmail.com>,
linux-mm@kvack.org
Subject: Re: [PATCH 3/9] perf kmem: Analyze page allocator events also
Date: Fri, 10 Apr 2015 18:10:49 -0300 [thread overview]
Message-ID: <20150410211049.GA17496@kernel.org> (raw)
In-Reply-To: <20150410210629.GF4521@kernel.org>
Em Fri, Apr 10, 2015 at 06:06:29PM -0300, Arnaldo Carvalho de Melo escreveu:
> Em Mon, Apr 06, 2015 at 02:36:10PM +0900, Namhyung Kim escreveu:
> > The perf kmem command records and analyze kernel memory allocation
> > only for SLAB objects. This patch implement a simple page allocator
> > analyzer using kmem:mm_page_alloc and kmem:mm_page_free events.
> >
> > It adds two new options of --slab and --page. The --slab option is
> > for analyzing SLAB allocator and that's what perf kmem currently does.
> >
> > The new --page option enables page allocator events and analyze kernel
> > memory usage in page unit. Currently, 'stat --alloc' subcommand is
> > implemented only.
> >
> > If none of these --slab nor --page is specified, --slab is implied.
> >
> > # perf kmem stat --page --alloc --line 10
>
> Hi, applied the first patch, the kernel one, reboot with that kernel:
<SNIP>
> [root@ssdandy ~]#
>
> What am I missing?
Argh, I was expecting to read just what is in that cset and be able to
reproduce the results, had to go back to the [PATCH 0/0] cover letter to
figure out that I need to run:
perf kmem record --page sleep 5
With that I get:
[root@ssdandy ~]# perf kmem stat --page --alloc --line 20
--------------------------------------------------------------------------------
PFN | Total alloc (KB) | Hits | Order | Mig.type | GFP flags
--------------------------------------------------------------------------------
3487838 | 12 | 3 | 0 | UNMOVABL | 00020010
3493414 | 8 | 2 | 0 | UNMOVABL | 000284d0
3487761 | 4 | 1 | 0 | UNMOVABL | 000202d0
3487764 | 4 | 1 | 0 | UNMOVABL | 000202d0
3487982 | 4 | 1 | 0 | UNMOVABL | 000202d0
3487991 | 4 | 1 | 0 | UNMOVABL | 000284d0
3488046 | 4 | 1 | 0 | UNMOVABL | 002284d0
3488057 | 4 | 1 | 0 | UNMOVABL | 000200d0
3488191 | 4 | 1 | 0 | UNMOVABL | 002284d0
3488203 | 4 | 1 | 0 | UNMOVABL | 000202d0
3488206 | 4 | 1 | 0 | UNMOVABL | 000202d0
3488210 | 4 | 1 | 0 | UNMOVABL | 000202d0
3488211 | 4 | 1 | 0 | UNMOVABL | 000202d0
3488213 | 4 | 1 | 0 | UNMOVABL | 000202d0
3488215 | 4 | 1 | 0 | UNMOVABL | 000202d0
3488298 | 4 | 1 | 0 | UNMOVABL | 000202d0
3488325 | 4 | 1 | 0 | UNMOVABL | 000202d0
3488326 | 4 | 1 | 0 | UNMOVABL | 000202d0
3488327 | 4 | 1 | 0 | UNMOVABL | 000202d0
3488329 | 4 | 1 | 0 | UNMOVABL | 000202d0
... | ... | ... | ... | ... | ...
--------------------------------------------------------------------------------
SUMMARY (page allocator)
========================
Total allocation requests : 166 [ 664 KB ]
Total free requests : 239 [ 956 KB ]
Total alloc+freed requests : 49 [ 196 KB ]
Total alloc-only requests : 117 [ 468 KB ]
Total free-only requests : 190 [ 760 KB ]
Total allocation failures : 0 [ 0 KB ]
Order Unmovable Reclaimable Movable Reserved CMA/Isolated
----- ------------ ------------ ------------ ------------ ------------
0 143 . 23 . .
1 . . . . .
2 . . . . .
3 . . . . .
4 . . . . .
5 . . . . .
6 . . . . .
7 . . . . .
8 . . . . .
9 . . . . .
10 . . . . .
[root@ssdandy ~]#
- Arnaldo
--
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:[~2015-04-10 21:10 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-04-06 5:36 [PATCHSET 0/9] perf kmem: Implement page allocation analysis (v6) Namhyung Kim
2015-04-06 5:36 ` [PATCH 1/9] perf kmem: Respect -i option Namhyung Kim
2015-04-06 5:36 ` [PATCH 2/9] tracing, mm: Record pfn instead of pointer to struct page Namhyung Kim
2015-04-06 5:36 ` [PATCH 3/9] perf kmem: Analyze page allocator events also Namhyung Kim
2015-04-10 21:06 ` Arnaldo Carvalho de Melo
2015-04-10 21:10 ` Arnaldo Carvalho de Melo [this message]
2015-04-13 6:59 ` Namhyung Kim
2015-04-13 13:21 ` Arnaldo Carvalho de Melo
2015-04-13 13:40 ` Arnaldo Carvalho de Melo
2015-04-06 5:36 ` [PATCH 4/9] perf kmem: Implement stat --page --caller Namhyung Kim
2015-04-13 13:40 ` Arnaldo Carvalho de Melo
2015-04-14 2:17 ` Namhyung Kim
2015-04-06 5:36 ` [PATCH 5/9] perf kmem: Support sort keys on page analysis Namhyung Kim
2015-04-06 5:36 ` [PATCH 6/9] perf kmem: Add --live option for current allocation stat Namhyung Kim
2015-04-06 5:36 ` [PATCH 7/9] perf kmem: Print gfp flags in human readable string Namhyung Kim
2015-04-06 5:36 ` [PATCH 8/9] perf kmem: Add kmem.default config option Namhyung Kim
2015-04-06 5:36 ` [PATCH 9/9] tools lib traceevent: Honor operator priority Namhyung Kim
2015-04-06 14:45 ` Steven Rostedt
2015-04-07 7:52 ` Namhyung Kim
2015-04-07 13:02 ` Arnaldo Carvalho de Melo
2015-04-07 13:57 ` Steven Rostedt
2015-04-07 14:10 ` Namhyung Kim
2015-04-13 13:41 ` Arnaldo Carvalho de Melo
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=20150410211049.GA17496@kernel.org \
--to=acme@kernel.org \
--cc=a.p.zijlstra@chello.nl \
--cc=dsahern@gmail.com \
--cc=jolsa@redhat.com \
--cc=js1304@gmail.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=minchan@kernel.org \
--cc=mingo@kernel.org \
--cc=namhyung@kernel.org \
/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;
as well as URLs for NNTP newsgroup(s).