Re: a joint letter on low latency and Linux

Mark Hahn (hahn@coffee.psychology.mcmaster.ca)
Sat, 1 Jul 2000 14:41:08 -0400 (EDT)

> On Thu, 29 Jun 2000, Paul Barton-Davis wrote:
> >that an IDE-based disk subsystem has much worse impact on latency,
>
> use hdparm -u1 if you need good irq latency.

-u1 is a nasty workaround. -d1 is the fix, since if you're
doing the kind of audio people are talking about, you don't want
PIO eating your CPU either. also PIO SCSI/net/etc, of course.

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