Re: [Xen-devel] [RFC] Scheduler work, part 1: High-level goals and interface.

[Jeremy Fitzhardinge <jeremy@xxxxxxxx>]

Andrew Lyon wrote:
> Is HT particularly worthwhile for virtualization loads? we have
> several older servers which have ht and I found that when running
> windows terminal services it actually slowed the machine down, and
> under certain circumstances it seemed to cause the system to become
> extremely slow and had to be rebooted, we disabled ht and the problem
> went away.
>
> Many documents on the web recommend disabling ht for specific
> workloads, and most benchmarks show that when it is benificial the
> performance gain is quite small.
>
> Or is your plan to make use of ht in a way that gets the most benefit
> with no impact under edge cases?
>   
"New" HT, as reintroduced in i7, is supposed to be "much better".

   J

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