On Mon, Nov 25, 2002 at 06:13:47PM +0100, Toni Mueller wrote: > > Hi, > > On Sun, Nov 24, 2002 at 10:35:37AM -0800, Jeremy Zawodny wrote: > > On Sun, Nov 24, 2002 at 06:56:34PM +0100, ????? ????? wrote: > > > About performance - IDE still uses a lot of the CPU > > now that most servers are far faster than that, we're talking about > > what, 1% or maybe 2% of the CPU? > > on my 700 MHz workstation I see up to 30% used by disk I/O.
you are almost certainly not using UDMA... The stock debian kernel still defaults to DMA off because there is some hardware out there that has problems with it. Install hwtools, hdparm and run; hdparm /dev/hda hdparm -tT /dev/hda to see your current settings and benchmark the performance. Then run; hdparm m16 -c1 -u1 -d1 /dev/hda hdparm -tT /dev/hda to change to dma mode and measure the new performance. The important option is the '-d1', and '-u1' can be risky on some hardware so you might want to omit it. Once you've found your prefered settings, edit /etc/init.d/hwtools to set it up for you every time you reboot. -- ---------------------------------------------------------------------- ABO: finger [EMAIL PROTECTED] for more info, including pgp key ---------------------------------------------------------------------- -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
