Messages in this thread | | | Date | Thu, 18 Dec 2003 11:41:11 -0200 (BRST) | From | Marcelo Tosatti <> | Subject | Re: RAID-0 read perf. decrease after 2.4.20 |
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On Tue, 16 Dec 2003, Martin Knoblauch wrote:
> 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.
Great.
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