Messages in this thread | | | Date | Sat, 17 Apr 2004 14:33:33 -0700 | From | William Lee Irwin III <> | Subject | Re: vmscan.c heuristic adjustment for smaller systems |
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On Sat, Apr 17, 2004 at 12:38:55PM -0700, William Lee Irwin III wrote: >> Marc Singer reported an issue where an embedded ARM system performed >> poorly due to page replacement potentially prematurely replacing >> mapped memory where there was very little mapped pagecache in use to >> begin with. >> Marc Singer has results where this is an improvement, and hopefully can >> clarify as-needed. Help determining whether this policy change is an >> improvement for a broader variety of systems would be appreciated.
On Sat, Apr 17, 2004 at 02:29:58PM -0700, Marc Singer wrote: > I have some numbers to clarify the 'improvement'. > Setup: > ARM922 CPU, 200MHz, 32MiB RAM > NFS mounted rootfs, tcp, hard, v3, 4K blocks > Test application copies 41MiB file and prints the elapsed time > The two scenarios differ only in the setting of /proc/sys/vm/swappiness.
This doesn't match your first response. Anyway, this one is gets scrapped. I guess if swappiness solves it, then so much the better.
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