On Fri, Jul 19, 2002 at 04:33:50PM -0400, Johannes Erdfelt wrote:
> I recently upgraded a web server I run to a the 2.4.19rc2aa1 kernel to
> see how much better the VM is.
>
> It seems to be better than the older 2.4 kernels used on this machine,
> but there seems to be lots of motion in the cache for all of the free
> memory that exists:
>
> procs memory swap io system cpu
> 3 0 0 106036 502288 10812 67236 0 0 0 0 802 494 46 37 17
> 5 0 2 106032 476188 10844 91496 0 0 4 316 905 573 54 37 8
> 16 0 2 106032 355400 10844 203880 0 0 4 0 909 540 51 49 0
> 10 0 2 106024 340108 10852 221548 0 0 28 0 975 659 36 64 0
> 0 0 0 106024 528340 10852 43572 0 0 4 0 569 426 17 17 67
> 0 1 0 106024 531304 10852 43612 0 0 4 0 542 342 9 14 77
>
> This is with a 1 second interval. Why is it that most of the time I have
> ~400MB of memory free (this machine has 1GB of memory). Why does the
> cache size vary so wildly?
>
> This machine is busy, as you can see, but it looks like the VM is trying
> to be a bit too aggressive here.
What type of workload? This looks fairly typicaly of a workload which
writes/deletes large files.
-Dave
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
This archive was generated by hypermail 2b29 : Tue Jul 23 2002 - 22:00:31 EST