Re: [2.4.17/18pre] VM and swap - it's really unusable
Chris Friesen (cfriesen@nortelnetworks.com)
Mon, 21 Jan 2002 13:59:12 -0500
yodaiken@fsmlabs.com wrote:
>
> On Mon, Jan 21, 2002 at 12:32:57PM -0500, Chris Friesen wrote:
> > yodaiken@fsmlabs.com wrote:
> >
> > > So your claim is that:
> > > Preemption improves latency when there are both kernel cpu bound
> > > tasks and tasks that are I/O bound with very low cache hit
> > > rates?
> > >
> > > Is that it?
> > >
> > > Can you give me an example of a CPU bound task that runs
> > > mostly in kernel? Doesn't that seem like a kernel bug?
> >
> > cat /dev/urandom > /dev/null
>
> Don't see any of Daniel's postulated long latencies there. (Sorry, but
> I'm having a hard time figuring out what is meant as a serious comment
> here).
No, that one wasn't serious. And while it is CPU bound and mostly in the
kernel, you're right that there are no long latencies to cause issues...
--
Chris Friesen | MailStop: 043/33/F10
Nortel Networks | work: (613) 765-0557
3500 Carling Avenue | fax: (613) 765-2986
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