From: Michal Hocko <mhocko@kernel.org>
To: Shantanu Goel <sgoel01@yahoo.com>
Cc: "linux-mm@kvack.org" <linux-mm@kvack.org>,
Vladimir Davydov <vdavydov.dev@gmail.com>,
Johannes Weiner <hannes@cmpxchg.org>
Subject: Re: [PATCH] vmscan: Skip slab scan when LRU size is zero
Date: Wed, 8 Feb 2017 14:37:32 +0100 [thread overview]
Message-ID: <20170208133732.GM5686@dhcp22.suse.cz> (raw)
In-Reply-To: <16b94242-095e-ac71-cb27-a20f2f2c2100@yahoo.com>
On Mon 06-02-17 19:47:49, Shantanu Goel wrote:
[...]
> # _-----=> irqs-off
> # / _----=> need-resched
> # | / _---=> hardirq/softirq
> # || / _--=> preempt-depth
> # ||| / delay
> # TASK-PID CPU# |||| TIMESTAMP FUNCTION
> # | | | |||| | |
[...]
All previous entries are for super_cache_scan so they will not tell us
much about the previous state of scan_shadow_nodes so this output seems
incomplete. Could you also enable mm_shrink_slab_end tracepoint please?
> kswapd0-93 [005] .... 49736.760169: mm_shrink_slab_start:
> scan_shadow_nodes+0x0/0x50 ffffffff94e6e460: nid: 0 objects to shrink
> 59291940 gfp_flags GFP_KERNEL pgs_scanned 32 lru_pgs 0 cache items 20 delta
> 1280 total_scan 40
--
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>
prev parent reply other threads:[~2017-02-08 13:37 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <1837390276.846271.1486216381871.ref@mail.yahoo.com>
2017-02-04 13:53 ` [PATCH] vmscan: Skip slab scan when LRU size is zero Shantanu Goel
2017-02-06 8:30 ` Michal Hocko
2017-02-07 0:47 ` Shantanu Goel
2017-02-08 13:37 ` Michal Hocko [this message]
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=20170208133732.GM5686@dhcp22.suse.cz \
--to=mhocko@kernel.org \
--cc=hannes@cmpxchg.org \
--cc=linux-mm@kvack.org \
--cc=sgoel01@yahoo.com \
--cc=vdavydov.dev@gmail.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;
as well as URLs for NNTP newsgroup(s).