Re: [patch 00/17] CFS Bandwidth Control v7.1

[Andi Kleen]

Peter Zijlstra <a.p.zijlstra@xxxxxxxxx> writes:
>
> +static void account_cfs_rq_runtime(struct cfs_rq *cfs_rq,
> +               unsigned long delta_exec)
> +{
> +       if (!cfs_rq->runtime_enabled)
> +               return;
> +
> +       cfs_rq->runtime_remaining -= delta_exec;
> +       if (cfs_rq->runtime_remaining > 0)
> +               return;
> +
> +       assign_cfs_rq_runtime(cfs_rq);
> +}
>
> generate a call, only to then take the first branch out, marking that

You would need a *LOT* of calls to make up for 9%.

Maybe it's something else? Some profiling first before optimization
is probably a good idea.

-Andi
-- 
ak@xxxxxxxxxxxxxxx -- Speaking for myself only
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