Re: RAID-0 read perf. decrease after 2.4.20
From: Martin Knoblauch
Date: Tue Dec 16 2003 - 07:52:08 EST
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@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/