Messages in this thread | | | Date | Mon, 21 Jan 2002 09:06:02 -0700 | From | yodaiken@fsmlabs ... | Subject | Re: [2.4.17/18pre] VM and swap - it's really unusable |
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On Mon, Jan 21, 2002 at 05:05:01PM +0100, Daniel Phillips wrote: > > I think of "benefit", perhaps naiively, in terms of something that can > > be measured or demonstrated rather than just announced. > > But you see why asap scheduling improves latency/throughput *in theory*,
Nope. And I don't even see a relationship between preemption and asap I/O schedulding. What make you think that I/O threads won't be preempted by other threads?
> don't you? As for the measured benefit, there have been a steady stream of > postive reports on lkml.
I have not seen a single well structured benchmark that shows a significant difference. I've seen lots of benchmarks with odd mixes of different patches showing something unknown. How about a simple clear dbench?
>My own experience is that the usability of my > laptop with its small memory is much improved under heavy IO load.
No comment.
-- --------------------------------------------------------- Victor Yodaiken Finite State Machine Labs: The RTLinux Company. www.fsmlabs.com www.rtlinux.com
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