Re: Better performance with 2.6

[Andrea Arcangeli]

On Tue, Mar 02, 2004 at 10:40:19AM -0800, Mike Fedyk wrote:
> albhaf wrote:
> >I know that 2.6 has the ability to get better
> >performance than the other versions.
> >But what parts of the kernel has provided to this
> >performance upgrade?
> 
> Preempt

preempt hurts a bit performance (at least when running a single threaded
app) with the object of helping interactivity, I say in theory because
a 2.4-aa based kernel has a worst case RT scheduler latency lower than
2.6 with preempt enabled (during I/O and some other workload).
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