Messages in this thread | | | Date | Thu, 4 Mar 2004 19:16:57 +0100 | From | Andrea Arcangeli <> | Subject | Re: 2.4.23aa2 (bugfixes and important VM improvements for the high end) |
| |
On Thu, Mar 04, 2004 at 09:35:13AM -0800, Martin J. Bligh wrote: > designed for bigboxen, so 4/4 vs 2/2 would be better, IMHO. People have > said before that DB performance can increase linearly with shared area > sizes (for some workloads), so that'd bring you a 100% or so increase > in performance for 4/4 to counter the loss.
that's a nice theory with the benchmarks that runs with a 64G working set, but if your working set is smaller than 32G 99% of the time and you install the 64G to handle the peak load happening 1% of the time faster, you'll run 30% slower 99% of the time even if the benchmark only stressing the 64G working set runs a lot faster than with 32G only. - 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/
| |