linux-kernel - Re: [PATCH 0/4] Stop kswapd consuming 100% CPU when highest zone is small

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Sat, 25 Jun 2011 08:23:37 -0600
From:	Andrew Lutomirski <luto@....edu>
To:	Mel Gorman <mgorman@...e.de>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Pádraig Brady <P@...igbrady.com>,
	James Bottomley <James.Bottomley@...senpartnership.com>,
	Colin King <colin.king@...onical.com>,
	Minchan Kim <minchan.kim@...il.com>,
	Rik van Riel <riel@...hat.com>,
	Johannes Weiner <hannes@...xchg.org>,
	linux-mm <linux-mm@...ck.org>,
	linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 0/4] Stop kswapd consuming 100% CPU when highest zone is small

On Fri, Jun 24, 2011 at 8:44 AM, Mel Gorman <mgorman@...e.de> wrote:
> (Built this time and passed a basic sniff-test.)
>
> During allocator-intensive workloads, kswapd will be woken frequently
> causing free memory to oscillate between the high and min watermark.
> This is expected behaviour.  Unfortunately, if the highest zone is
> small, a problem occurs.
>

[...]

I've been running these for a couple days with no problems, although I
haven't been trying to reproduce the problem.  (Well, no problems
related to memory management.)

I suspect that my pet unnecessary-OOM-kill bug is still around, but
that's probably not related, especially since I can trigger it if I
stick 8 GB of RAM in this laptop.

Thanks,
Andy
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/