Call for performance evaluation: net.isr.direct (fwd)

[Poul-Henning Kamp]

In message <17230.62415.991707.840932 at grasshopper.cs.duke.edu>, Andrew Gallatin
 writes:

>Linux already takes care of syncing the TSC between SMP cpus, so we
>know it is possible.  This seems like a much more doable optimization.
>And it is likely to have other benefits..

Validating that the TSC is reliable is a nontrivial task which requires
access to a lot of NDA information and an extensive positive/negative
list of chips and chipsets.

Even in the most recent chips, there are still issues with TSC that
makes it unusable as a default timecounter.

-- 
Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
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Never attribute to malice what can adequately be explained by incompetence.