Messages in this thread | | | Date | Fri, 25 Jan 2013 12:47:00 +1100 | From | paul.szabo@sydney ... | Subject | Re: [PATCH] Negative (setpoint-dirty) in bdi_position_ratio() |
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Dear Fengguang,
> There are 260MB reclaimable slab pages in the normal zone ...
Marked "all_unreclaimable? yes": is that wrong? Question asked also in: http://marc.info/?l=linux-mm&m=135873981326767&w=2
> ... however we somehow failed to reclaim them. ...
I made a patch that would do a drop_caches at that point, please see: http://bugs.debian.org/695182 http://bugs.debian.org/cgi-bin/bugreport.cgi?msg=101;filename=drop_caches.patch;att=1;bug=695182 http://marc.info/?l=linux-mm&m=135785511125549&w=2 and that successfully avoided OOM when writing files. But, the drop_caches patch did not protect against the "sleep test".
> ... What's your filesystem and the content of /proc/slabinfo?
Filesystem is EXT3. See output of slabinfo in Debian bug above or in http://marc.info/?l=linux-mm&m=135796154427544&w=2
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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