Messages in this thread | | | Date | Tue, 16 Dec 2003 04:51:03 -0800 (PST) | From | Martin Knoblauch <> | Subject | Re: RAID-0 read perf. decrease after 2.4.20 |
| |
On Monday 08 December 2003 13:47, Marcelo Tosatti wrote:
Hi Marcelo,
> 2.4.20-aa included rmap and some VM modifications most notably > "drop_behind()" logic which I believe should be the reason for the huge > read speedups. Can you please try it? Against 2.4.23.
Just some feedback:
echo 511 > /proc/sys/vm/max-readahead
brings back the read performance of my 30 disks on 4 controller LVM/RAID0.
Cheers Martin
===== ------------------------------------------------------ Martin Knoblauch email: k n o b i AT knobisoft DOT de www: http://www.knobisoft.de - 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/
| |