On Fri, Nov 13, 2009 at 4:30 AM, Mel Gorman <[email protected]> wrote: > If reclaim fails to make sufficient progress, the priority is raised. > Once the priority is higher, kswapd starts waiting on congestion. > However, on systems with large numbers of high-order atomics due to > crappy network cards, it's important that kswapd keep working in > parallel to save their sorry ass. > > This patch takes into account the order kswapd is reclaiming at before > waiting on congestion. The higher the order, the longer it is before > kswapd considers itself to be in trouble. The impact is that kswapd > works harder in parallel rather than depending on direct reclaimers or > atomic allocations to fail. > > Signed-off-by: Mel Gorman <[email protected]>
It's make sense to me. It can help high order atomic allocation which is a big problem of allocator. :) Thanks Mel. Reviewed-by: Minchan Kim <[email protected]> -- Kind regards, Minchan Kim -- To unsubscribe from this list: send the line "unsubscribe kernel-testers" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
