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Date: Tue, 7 Dec 2010 11:38:20 -0500 From: Ted Ts'o <tytso@....edu> To: Wu Fengguang <fengguang.wu@...el.com> Cc: Rik van Riel <riel@...hat.com>, Peter Zijlstra <peterz@...radead.org>, Andrew Morton <akpm@...ux-foundation.org>, Chris Mason <chris.mason@...cle.com>, Dave Chinner <david@...morbit.com>, Jan Kara <jack@...e.cz>, Jens Axboe <axboe@...nel.dk>, Mel Gorman <mel@....ul.ie>, KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>, Christoph Hellwig <hch@....de>, linux-mm <linux-mm@...ck.org>, "linux-fsdevel@...r.kernel.org" <linux-fsdevel@...r.kernel.org>, LKML <linux-kernel@...r.kernel.org>, "linux-ext4@...r.kernel.org" <linux-ext4@...r.kernel.org> 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 majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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