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  PHC 
Open Source and information security mailing list archives
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [thread-next>] [day] [month] [year] [list]
Date:	Tue, 7 Dec 2010 11:38:20 -0500
From:	Ted Ts'o <>
To:	Wu Fengguang <>
Cc:	Rik van Riel <>,
	Peter Zijlstra <>,
	Andrew Morton <>,
	Chris Mason <>,
	Dave Chinner <>, Jan Kara <>,
	Jens Axboe <>, Mel Gorman <>,
	KOSAKI Motohiro <>,
	Christoph Hellwig <>, linux-mm <>,
	"" <>,
	LKML <>,
	"" <>
Subject: Re: ext4 memory leak?

On Tue, Dec 07, 2010 at 11:21:20PM +0800, Wu Fengguang wrote:
> On Tue, Dec 07, 2010 at 10:33:51PM +0800, Wu Fengguang wrote:
> > > In a simple dd test on a 8p system with "mem=256M", I find the light
> > 
> > When increasing to 10 concurrent dd tasks, I managed to crash ext4..
> > (2 concurrent dd's are OK, with very good write performance.)

What was the dd command line?  Specifically, how big were the file
writes?  I haven't been able to replicate a leak.  I'll try on a small
system seeing if I can replicate an OOM kill, but I'm not seeing a
leak.  (i.e., after the dd if=/dev/zero of=/test/$i" jobs) are
finished, the memory utilization looks normal and I don't see any
obvious slab leaks.

       	      	       		    	- Ted
To unsubscribe from this list: send the line "unsubscribe linux-ext4" in
the body of a message to
More majordomo info at

Powered by blists - more mailing lists