From: Andrew Morton <akpm@linux-foundation.org>
To: Rik van Riel <riel@redhat.com>
Cc: Andrea Arcangeli <andrea@suse.de>, linux-mm@kvack.org
Subject: Re: [PATCH 01 of 16] remove nr_scan_inactive/active
Date: Thu, 28 Jun 2007 16:13:50 -0700 [thread overview]
Message-ID: <20070628161350.5ce20202.akpm@linux-foundation.org> (raw)
In-Reply-To: <46843E65.3020008@redhat.com>
On Thu, 28 Jun 2007 19:04:05 -0400
Rik van Riel <riel@redhat.com> wrote:
> > Sigh. We had a workload (forget which, still unfixed) in which things
> > would basically melt down in that linear anon_vma walk, walking 10,000 or
> > more vma's. I wonder if that's what's happening here?
>
> That would be a large multi-threaded application that fills up
> memory. Customers are reproducing this with JVMs on some very
> large systems.
So.... does that mean "yes, it's scanning a lot of vmas"?
If so, I expect there will still be failure modes, whatever we do outside
of this. A locked, linear walk of a list whose length is
application-controlled is going to be a problem. Could be that we'll need
an O(n) -> O(log(n)) conversion, which will be tricky in there.
--
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:[~2007-06-28 23:13 UTC|newest]
Thread overview: 77+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-06-08 20:02 [PATCH 00 of 16] OOM related fixes Andrea Arcangeli
2007-06-08 20:02 ` [PATCH 01 of 16] remove nr_scan_inactive/active Andrea Arcangeli
2007-06-10 17:36 ` Rik van Riel
2007-06-10 18:17 ` Andrea Arcangeli
2007-06-11 14:58 ` Rik van Riel
2007-06-26 17:08 ` Rik van Riel
2007-06-26 17:55 ` Andrew Morton
2007-06-26 19:02 ` Rik van Riel
2007-06-28 22:44 ` Rik van Riel
2007-06-28 22:57 ` Andrew Morton
2007-06-28 23:04 ` Rik van Riel
2007-06-28 23:13 ` Andrew Morton [this message]
2007-06-28 23:16 ` Rik van Riel
2007-06-28 23:29 ` Andrew Morton
2007-06-29 0:00 ` Rik van Riel
2007-06-29 0:19 ` Andrew Morton
2007-06-29 0:45 ` Rik van Riel
2007-06-29 1:12 ` Andrew Morton
2007-06-29 1:20 ` Rik van Riel
2007-06-29 1:29 ` Andrew Morton
2007-06-28 23:25 ` Andrea Arcangeli
2007-06-29 0:12 ` Andrew Morton
2007-06-29 13:38 ` Lee Schermerhorn
2007-06-29 14:12 ` Andrea Arcangeli
2007-06-29 14:59 ` Rik van Riel
2007-06-29 22:39 ` "Noreclaim Infrastructure" [was Re: [PATCH 01 of 16] remove nr_scan_inactive/active] Lee Schermerhorn
2007-06-29 22:42 ` RFC "Noreclaim Infrastructure - patch 1/3 basic infrastructure" Lee Schermerhorn
2007-06-29 22:44 ` RFC "Noreclaim Infrastructure patch 2/3 - noreclaim statistics..." Lee Schermerhorn
2007-06-29 22:49 ` "Noreclaim - client patch 3/3 - treat pages w/ excessively references anon_vma as nonreclaimable" Lee Schermerhorn
2007-06-26 20:37 ` [PATCH 01 of 16] remove nr_scan_inactive/active Andrea Arcangeli
2007-06-26 20:57 ` Rik van Riel
2007-06-26 22:21 ` Andrea Arcangeli
2007-06-08 20:03 ` [PATCH 02 of 16] avoid oom deadlock in nfs_create_request Andrea Arcangeli
2007-06-10 17:38 ` Rik van Riel
2007-06-10 18:27 ` Andrea Arcangeli
2007-06-08 20:03 ` [PATCH 03 of 16] prevent oom deadlocks during read/write operations Andrea Arcangeli
2007-06-08 20:03 ` [PATCH 04 of 16] serialize oom killer Andrea Arcangeli
2007-06-09 6:43 ` Peter Zijlstra
2007-06-09 15:27 ` Andrea Arcangeli
2007-06-08 20:03 ` [PATCH 05 of 16] avoid selecting already killed tasks Andrea Arcangeli
2007-06-08 20:03 ` [PATCH 06 of 16] reduce the probability of an OOM livelock Andrea Arcangeli
2007-06-08 20:03 ` [PATCH 07 of 16] balance_pgdat doesn't return the number of pages freed Andrea Arcangeli
2007-06-08 20:03 ` [PATCH 08 of 16] don't depend on PF_EXITING tasks to go away Andrea Arcangeli
2007-06-08 20:03 ` [PATCH 09 of 16] fallback killing more tasks if tif-memdie doesn't " Andrea Arcangeli
2007-06-08 21:57 ` Christoph Lameter
2007-06-08 20:03 ` [PATCH 10 of 16] stop useless vm trashing while we wait the TIF_MEMDIE task to exit Andrea Arcangeli
2007-06-08 21:48 ` Christoph Lameter
2007-06-09 1:59 ` Andrea Arcangeli
2007-06-09 3:01 ` Christoph Lameter
2007-06-09 14:05 ` Andrea Arcangeli
2007-06-09 14:38 ` Andrea Arcangeli
2007-06-11 16:07 ` Christoph Lameter
2007-06-11 16:50 ` Andrea Arcangeli
2007-06-11 16:57 ` Christoph Lameter
2007-06-11 17:51 ` Andrea Arcangeli
2007-06-11 17:56 ` Christoph Lameter
2007-06-11 18:22 ` Andrea Arcangeli
2007-06-11 18:39 ` Christoph Lameter
2007-06-11 18:58 ` Andrea Arcangeli
2007-06-11 19:25 ` Christoph Lameter
2007-06-11 16:04 ` Christoph Lameter
2007-06-08 20:03 ` [PATCH 11 of 16] the oom schedule timeout isn't needed with the VM_is_OOM logic Andrea Arcangeli
2007-06-08 20:03 ` [PATCH 12 of 16] show mem information only when a task is actually being killed Andrea Arcangeli
2007-06-08 20:03 ` [PATCH 13 of 16] simplify oom heuristics Andrea Arcangeli
2007-06-08 20:03 ` [PATCH 14 of 16] oom select should only take rss into account Andrea Arcangeli
2007-06-10 17:17 ` Rik van Riel
2007-06-10 17:30 ` Andrea Arcangeli
2007-06-08 20:03 ` [PATCH 15 of 16] limit reclaim if enough pages have been freed Andrea Arcangeli
2007-06-10 17:20 ` Rik van Riel
2007-06-10 17:32 ` Andrea Arcangeli
2007-06-10 17:52 ` Rik van Riel
2007-06-11 16:23 ` Christoph Lameter
2007-06-11 16:57 ` Rik van Riel
2007-06-08 20:03 ` [PATCH 16 of 16] avoid some lock operation in vm fast path Andrea Arcangeli
2007-06-08 21:26 ` [PATCH 00 of 16] OOM related fixes William Lee Irwin III
2007-06-09 14:55 ` Andrea Arcangeli
2007-06-12 8:58 ` Petr Tesarik
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=20070628161350.5ce20202.akpm@linux-foundation.org \
--to=akpm@linux-foundation.org \
--cc=andrea@suse.de \
--cc=linux-mm@kvack.org \
--cc=riel@redhat.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