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Message-Id: <201301110046.r0B0k6lR024284@como.maths.usyd.edu.au> Date: Fri, 11 Jan 2013 11:46:06 +1100 From: paul.szabo@...ney.edu.au To: dave@...ux.vnet.ibm.com Cc: 695182@...s.debian.org, linux-kernel@...r.kernel.org, linux-mm@...ck.org Subject: Re: [RFC] Reproducible OOM with partial workaround Dear Dave, > Your configuration has never worked. This isn't a regression ... > ... does not mean that we expect it to work. Do you mean that CONFIG_HIGHMEM64G is deprecated, should not be used; that all development is for 64-bit only? > ... 64-bit kernels should basically be drop-in replacements ... Will think about that. I know all my servers are 64-bit capable, will need to check all my desktops. --- I find it puzzling that there seems to be a sharp cutoff at 32GB RAM, no problem under but OOM just over; whereas I would have expected lowmem starvation to be gradual, with OOM occuring much sooner with 64GB than with 34GB. Also, the kernel seems capable of reclaiming lowmem, so I wonder why does that fail just over the 32GB threshhold. (Obviously I have no idea what I am talking about.) --- Thanks, Paul Paul Szabo psz@...hs.usyd.edu.au http://www.maths.usyd.edu.au/u/psz/ School of Mathematics and Statistics University of Sydney Australia -- 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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