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Message-ID: <20090514205600.GA14741@elf.ucw.cz> Date: Thu, 14 May 2009 22:56:00 +0200 From: Pavel Machek <pavel@....cz> To: Christoph Lameter <cl@...ux-foundation.org> Cc: David Rientjes <rientjes@...gle.com>, Andrew Morton <akpm@...ux-foundation.org>, Greg Kroah-Hartman <gregkh@...e.de>, Nick Piggin <npiggin@...e.de>, Mel Gorman <mel@....ul.ie>, Peter Ziljstra <a.p.ziljstra@...llo.nl>, Dave Hansen <dave@...ux.vnet.ibm.com>, San Mehat <san@...roid.com>, Arve Hj?nnev?g <arve@...roid.com>, linux-kernel@...r.kernel.org Subject: Re: Misleading OOM messages On Thu 2009-05-14 15:46:50, Christoph Lameter wrote: > On Thu, 14 May 2009, Pavel Machek wrote: > > > It can be 'low on memory' if you play with mlock() a bit. > > But that is a reclaim failure becuase of mlocking pages. > > > It is out of memory if you run out of swap (or have no swap to begin with). > > That is a swap config issue. Well, many machines are _designed_ to run without swap. Swapping on flash is considered bad. > > I believe message is often correct. What message would you suggest? > > "Failure to reclaim memory" That is not a helpful message, I'm afraid. What about "Memory allocation failure" ? "Out of memory, or failed to allocate memory due to temporary spike"? Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html -- 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/
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