On Sat, Jan 25, 2003 at 12:20:56AM -0800, Paul Johnson wrote: > On Fri, Jan 24, 2003 at 10:21:12PM +0000, Pigeon wrote: > > On a sort of related point... writing a CD (at 28x), top shows 80-85% > > system CPU usage. That's with an Athlon 1800XP (1.53GHz). Feeling the > > heatsink, however, it's running as cool as it usually does. I reckon > > this must be because it's spending lots of time waiting on the IDE bus. > > Yes. We recently went through a *very* long thread about IDE > suckitude recently, specifically it's relationship to the RTC. You > might notice your RTC drift by several minutes when burning a CD. > > I wish I could find it in the archives, now...
I remember; it seemed to me to be all about the clock, and since I don't much care about the clock as long as it doesn't go backwards, I tended to skip it. Now, I have a UDMA66 HD, which on buffered disk reads in hdparm -t gives rates of about 28Mb/s, both with the onboard VIA controller and a CMD680 PCI card. I also have a Quantum Viking 4.5 SCSI drive and Initio INIC-950P (9100UW) SCSI card. This only gives me around 10Mb/s in hdparm -t. Seems a bit slow to me. hdparm -T gives over 200Mb/s for any drive. Pigeon -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
