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Date: Fri, 4 Jan 2013 00:26:35 +0000 From: Eric Wong <normalperson@...t.net> To: Eric Dumazet <eric.dumazet@...il.com> Cc: Mel Gorman <mgorman@...e.de>, linux-mm@...ck.org, netdev@...r.kernel.org, linux-kernel@...r.kernel.org, Rik van Riel <riel@...hat.com>, Minchan Kim <minchan@...nel.org>, Andrew Morton <akpm@...ux-foundation.org>, Linus Torvalds <torvalds@...ux-foundation.org> Subject: Re: ppoll() stuck on POLLIN while TCP peer is sending Eric Wong <normalperson@...t.net> wrote: > I think this requires frequent dirtying/cycling of pages to reproduce. > (from copying large files around) to interact with compaction. > I'll see if I can reproduce the issue with read-only FS activity. Still successfully running the read-only test on my main machine, will provide another update in a few hours or so if it's still successful (it usually takes <1 hour to hit). I also fired up a VM on my laptop (still running v3.7) and was able to get stuck with only 2 cores and 512M on the VM (x86_64). On the small VM with little disk space, it doesn't need much dirty data to trigger. I just did this: find $45G_NFS_MOUNT -type f -print0 | \ xargs -0 -n1 -P4 sh -c 'cat "$1" >> tmp; > tmp' -- ...while running two instances of toosleepy (one got stuck and aborted). -- To unsubscribe from this list: send the line "unsubscribe netdev" 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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