> > /dev/hda:
> > Timing buffer-cache reads: 128 MB in 1.75 seconds =73.14 MB/sec
> > Timing buffered disk reads: 64 MB in 21.91 seconds = 2.92 MB/sec
> >
> > I'm not gonna switch it just to show you guys, but on hde cache reads hit
> > around 125-150, and buffered gets up to about 5-10. A mighty big
> > improvment, but....
>
> Something's mighty wrong with those readings Axalon... Here's my 18G WD:
>
> [root@tippy /root]# hdparm -tT /dev/hda
>
> /dev/hda:
> Timing buffer-cache reads: 128 MB in 1.73 seconds =73.99 MB/sec
> Timing buffered disk reads: 64 MB in 3.81 seconds =16.80 MB/sec
for my 8.4 WD ide0 slave
/dev/hdb1:
Timing buffer-cache reads: 128 MB in 0.87 seconds =147.13 MB/sec
Timing buffered disk reads: 64 MB in 6.04 seconds =10.60 MB/sec
Twice your cache reads, not as good as your disk reads. Take
a look at 'info hdparm'. It recommends low settings for 'multcount'
and 'readahead' for WD drives. I use 4, and 64, rather than your
8, and 128. I've tried 'em all tho, the above numbers are the best
I can get out of this older drive.
dev/hdb:
multcount = 4 (on)
I/O support = 1 (32-bit)
unmaskirq = 1 (on)
using_dma = 1 (on)
keepsettings = 1 (on)
nowerr = 0 (off)
readonly = 0 (off)
readahead = 64 (on)
geometry = 1027/255/63, sectors = 16514064, start = 0
--
.. Tom Brinkman [EMAIL PROTECTED] .
