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Date: Sat, 26 Jan 2013 14:57:29 +1100 From: paul.szabo@...ney.edu.au To: fengguang.wu@...el.com Cc: 695182@...s.debian.org, akpm@...ux-foundation.org, jack@...e.cz, linux-kernel@...r.kernel.org, linux-mm@...ck.org Subject: Re: [PATCH] Negative (setpoint-dirty) in bdi_position_ratio() Dear Fengguang (et al), > There are 260MB reclaimable slab pages in the normal zone, however we > somehow failed to reclaim them. ... Could the problem be that without CONFIG_NUMA, zone_reclaim_mode stays at zero and anyway zone_reclaim() does nothing in include/linux/swap.h ? Though... there is no CONFIG_NUMA nor /proc/sys/vm/zone_reclaim_mode in the Ubuntu non-PAE "plain" HIGHMEM4G kernel, and still it handles the "sleep test" just fine. Where does reclaiming happen (or meant to happen)? 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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