Re: [RFC][PATCH v2 4/7] taskstats: Add per task steal timeaccounting

From: Peter Zijlstra
Date: Sat Nov 13 2010 - 14:38:50 EST


On Thu, 2010-11-11 at 18:03 +0100, Michael Holzheu wrote:
> From: Michael Holzheu <holzheu@xxxxxxxxxxxxxxxxxx>
>
> Currently steal time is only accounted for the whole system. With this
> patch we add steal time to the per task CPU time accounting.
> The triplet "user time", "system time" and "steal time" represents
> all consumed CPU time on hypervisor based systems.

Does that really make sense? Its not like the hypervisor really knows
anything about tasks and won't steal from one? Its really a vcpu
feature.

What added benefit will all this extra accounting give?
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/