Re: Hugh's alternate page fault scalability approach on 512p Altix

Hi!

> 2. The use rss and anon_rss deltas instead of atomic incs brings small 
>    performance enhancements in the lower cpu ranges (1-32) but hurt (%50 
>    performance drop at 512 processors) in the high range. The hurting may
>    be due to the percularities of SGIs NUMA router architecture and the 

I'd say that 50% drop at 512 CPUs is acceptable. I did not even
know we support that many CPUs.
				Pavel

-- 
64 bytes from 195.113.31.123: icmp_seq=28 ttl=51 time=448769.1 ms         

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  • Hugh's alternate page fault scalability approach on 512p Altix
    • From: Christoph Lameter <[email protected]>

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