On Tue, 15 May 2001, Juha Saarinen wrote:
> On Mon, 14 May 2001, Austin Gonyou wrote:
> > stupid mistake, big booboo. Next I went ahead and enabled the DMA support
> > on this kernel. It was in fact NOT turned on. I also enabled PIIXn support
> > and tuning.
> This intrigues me -- you have an Athlon box with a VIA or ALi chip set
> right? PIIX is Intel only.
The PIIX addition was on an intel system. A dell GX100 with a 433 celeron.
Dood..it's so damn fast now!!!
> > After doing that specific change, my system improved
> > performance immediately. Good news there. After that, I continued further,
> > using HDPARM and got a full 65-80% increase in throughput. I used the
> > following options:
> > hdparm -X66 -d1 -u1 -c3 -m16 /dev/hdx
> You might want to experiment with the -a(n), -A1, -W1 flags
> too. Just plain -c1 is probably a tiny bit quicker than -c3 (but it might
> not work with your chip set).
Good call indeed!
> If you have a newer drive, check with -i to see which UDMA mode it
> supports. -X66 is UDMA 2; -X67, 68 and 69 could work on newer drives.
You are correct indeed. One of the drives I have at work support UDMA5.
And so it goes. Also I added -W1 -A1 -a16 -c1 to my parameter list, I
added 9MB/s. WHOOOOLLLY CRAP! Anyway, it kicks ass, and now this system is
As promised, when I get home, I'm going to recompile my kernel again, and
tweak these options to see what I can get out of it!
Systems Architect, CCNA