From: paul.szabo@sydney.edu.au
To: fengguang.wu@intel.com
Cc: 695182@bugs.debian.org, akpm@linux-foundation.org, jack@suse.cz,
linux-kernel@vger.kernel.org, linux-mm@kvack.org
Subject: Re: [PATCH] Negative (setpoint-dirty) in bdi_position_ratio()
Date: Sat, 26 Jan 2013 14:57:29 +1100 [thread overview]
Message-ID: <201301260357.r0Q3vT1v005715@como.maths.usyd.edu.au> (raw)
In-Reply-To: <20130125005529.GA21668@localhost>
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@maths.usyd.edu.au http://www.maths.usyd.edu.au/u/psz/
School of Mathematics and Statistics University of Sydney Australia
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prev parent reply other threads:[~2013-01-26 3:57 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-01-20 0:02 paul.szabo
2013-01-22 23:54 ` Jan Kara
2013-01-24 14:14 ` Fengguang Wu
2013-01-24 14:57 ` Fengguang Wu
2013-01-24 15:16 ` Jan Kara
2013-01-25 0:15 ` paul.szabo
2013-01-24 23:43 ` paul.szabo
2013-01-25 0:55 ` Fengguang Wu
2013-01-25 1:47 ` paul.szabo
2013-01-26 3:57 ` paul.szabo [this message]
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