On Sun, 18 Mar 2001, Mike Galbraith wrote:
> I gave this patch a try, and the initial results are extremely encouraging.
> Not only do I have vmstat (SCHED_RR) info in realtime with zero delays :))
> I also have a _nice_ throughput improvement. There are some worrisome
> warnings below along with the compile changes I made here, but for an
> initial patch, things look pretty darn wonderful.
[snip compile fixes .. integrated]
> VFS: Mounted root (ext2 filesystem) readonly.
> Freeing unused kernel memory: 196k freed
> Adding Swap: 265064k swap-space (priority 2)
> VM: Bad swap entry 00011e00
> VM: Bad swap entry 00058d00
> Unused swap offset entry in swap_dup 00058d00
> Unused swap offset entry in swap_dup 00011e00
> VM: Bad swap entry 00011e00
> VM: Bad swap entry 00058d00
Heh, I guess do_swap_page isn't too happy when multiple threads
of the same program take a page fault at the same address at the
same time.
I take it you were testing something like mysql, jvm or apache2 ?
regards,
Rik
--
Virtual memory is like a game you can't win;
However, without VM there's truly nothing to lose...
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