linux-kernel - Re: Interactivity regression since v3.11 in mm/vmscan.c

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: Windows password security audit tool. GUI, reports in PDF.

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

Date:	Fri, 6 Jun 2014 07:27:08 -0500
From:	Felipe Contreras <felipe.contreras@...il.com>
To:	Michal Hocko <mhocko@...e.cz>
Cc:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	"linux-mm@...ck.org" <linux-mm@...ck.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Mel Gorman <mgorman@...e.de>,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>,
	Rik van Riel <riel@...hat.com>
Subject: Re: Interactivity regression since v3.11 in mm/vmscan.c

On Thu, Jun 5, 2014 at 8:37 AM, Michal Hocko <mhocko@...e.cz> wrote:

> We had a similar report for opensuse. The common part was that there was
> an IO to a slow USB device going on.

Actually I've managed to narrow down my synthetic test, and all I need
is to copy a big file, and it even happens reading and writing to the
SSD (although the stall is less severe).

Here's the test:
http://pastie.org/9264124

Just pass a big file as the first argument.

I don't have much memory in this machine, so I guess running out of
memory is the trigger.

-- 
Felipe Contreras
--
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/