Messages in this thread | | | From | KOSAKI Motohiro <> | Date | Wed, 11 Jan 2012 14:57:25 -0500 | Subject | Re: [PATCH -mm 2/2] mm: kswapd carefully invoke compaction |
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> I believe we do need some background compaction, especially > to help allocations from network interrupts.
I completely agree.
> If you believe the compaction is better done from some > other thread, I guess we could do that, but truthfully, if > kswapd spends a lot of time doing compaction, I made a > mistake somewhere :)
I don't have much experience of compaction on real production systems. but I have a few bad experience of background lumpy reclaim. If much network allocation is happen when kswapd get stucked large order lumpy reclaim, kswapd can't work for making order-0 job.it was bad. I'm only worry about similar issue will occur.
But, ok, we can fix it when we actually observed such thing. So, please go ahead.
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