Re: Microsecond resolution timers - final word
Matthew Wilcox (Matthew.Wilcox@genedata.com)
Wed, 28 Jul 1999 19:45:15 +0200
On Tue, Jul 27, 1999 at 06:44:16PM +0200, Artur Skawina wrote:
>
> > However, I understand that those patches have brought to light certain
> > other kernel problems which have been fixed as a result...
>
> I'm afraid fixing some of them will take some time, as the fixes sometimes
> are unobvious, require changes to apis and/or are controversial ;)
> [one problem, which i didn't see mentioned or handled yet, is: anything
> that assumess it can turn off interrupts for less then 1/100s. If you
> set HZ to 1024 the limit suddenly becomes <1ms and the chances of missing
> timer ticks increases]
Since the Alpha has HZ=1024, fixing those drivers is not a controversial
change.
--
Matthew Wilcox <willy@bofh.ai>
"Windows and MacOS are products, contrived by engineers in the service of
specific companies. Unix, by contrast, is not so much a product as it is a
painstakingly compiled oral history of the hacker subculture." - N Stephenson
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