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SubjectRe: [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
School of Mathematics and Statistics University of Sydney Australia

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