Tom Brinkman wrote:
>
>
> > > /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] .
>
Unfortunately, since I don't have a patched kernel, I can't enable DMA
access for my drives, as I am using an Ali M15x3 chipset. I get these
results without tweaking (a bit off since I have about 20 netscape
windows open)
/dev/hda:
Timing buffer-cache reads: 128 MB in 2.27 seconds =56.39 MB/sec
Timing buffered disk reads: 64 MB in 10.37 seconds = 6.17 MB/sec
I really want to be able to enable UDMA, because in Mandrake 6.0, with
only enabling UDMA, I was getting about 13-14 MB/sec, which sped it up a
bit.
Is there a patched kernel available to download for 6.1, or do I have to
get the sources and the patch (or kernel 2.3.x)?
--
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| Andrew Mitchell |
| Email [EMAIL PROTECTED] |
| Home Page http://members.tripod.com/Ajmitchell/ |
| ICQ 11392490 (ajmitch) |
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