Re: [PATCH v2 0/8] Fix performance issue with ondemand governor

From: Ingo Molnar
Date: Sun May 09 2010 - 13:50:18 EST



* Arjan van de Ven <arjan@xxxxxxxxxxxxx> wrote:

> [Version 2 includes the acks/etc. Andrew: no changes from the patches that
> are in -mm]
>
> There have been various reports of the ondemand governor causing some
> serious performance issues, one of the latest ones from Andrew. There are
> several fundamental issues with ondemand (being worked on), but the report
> from Andrew can be fixed relatively easily.
>
> The fundamental issue is that ondemand will go to a (too) low CPU frequency
> for workloads that alternatingly disk and CPU bound...

I've applied your series to sched/core and started testing it, thanks Arjan!

Ingo
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