In <Pine.LNX.4.10.10007011439020.1511-100000@coffee.psychology.mcmaster.ca> Mark Hahn (hahn@coffee.psychology.mcmaster.ca) wrote:
>> 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.
In fact -u1 is GREAT thing to show what Linus DOES accept and what he DOES NOT.
Wihout -u1 interrupt latency is so high somethimes that you can not use serial
ports and some other stuff (-d1 is fix, but it's not always awailable). And
even if it's horrible KLUDGE (and everyone knows it!) it's LOCALIZED kludge.
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