linux-kernel - Re: [PATCH] mm: check zone->all_unreclaimable in all

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:	Thu, 10 Mar 2011 23:08:39 +0900 (JST)
From:	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>
To:	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>
Cc:	kosaki.motohiro@...fujitsu.com, avagin@...il.com,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Minchan Kim <minchan.kim@...il.com>,
	Andrey Vagin <avagin@...nvz.org>, Mel Gorman <mel@....ul.ie>,
	linux-mm@...ck.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] mm: check zone->all_unreclaimable in all_unreclaimable()

> Hi, 
> 
> Hmmm...
> If I could observed your patch, I did support your opinion. but I didn't. so, now I'm 
> curious why we got the different conclusion. tommorow, I'll try to construct a test 
> environment to reproduce your system.

Hm, 

following two patches seems to have bad interaction. former makes
SCHED_FIFO when OOM, latter makes CPU 100% occupied busy loop if
LRU is really tight.
Of cource, I need to run more much test. I'll digg it more at this 
weekend (maybe).


commit 93b43fa55088fe977503a156d1097cc2055449a2
Author: Luis Claudio R. Goncalves <lclaudio@...g.org>
Date:   Mon Aug 9 17:19:41 2010 -0700

    oom: give the dying task a higher priority


commit 0e093d99763eb4cea09f8ca4f1d01f34e121d10b
Author: Mel Gorman <mel@....ul.ie>
Date:   Tue Oct 26 14:21:45 2010 -0700

    writeback: do not sleep on the congestion queue if there are no congested BDIs or if significant conge



--
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/