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[Xen-devel] Re: bad interaction between boosted idle vcpus and csched's
| To: | Jan Beulich <JBeulich@xxxxxxxxxx> |
|---|---|
| Subject: | [Xen-devel] Re: bad interaction between boosted idle vcpus and csched's tickling? |
| From: | Keir Fraser <keir.fraser@xxxxxxxxxxxxx> |
| Date: | Tue, 11 May 2010 11:14:40 +0100 |
| Cc: | "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx> |
| Delivery-date: | Tue, 11 May 2010 03:15:25 -0700 |
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| Thread-topic: | bad interaction between boosted idle vcpus and csched's tickling? |
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On 07/05/2010 13:36, "Jan Beulich" <JBeulich@xxxxxxxxxx> wrote:
> Keir,
>
> isn't there a problem after the change to handle tasklets in idle vcpus
> in that {default,acpi_processor}_idle() will put the vcpu to sleep with
> boosted priority still in place, hence preventing it from being tickled
> and/or needlessly tickling other CPUs?
Should be resolved by xen-unstable:21344.
-- Keir
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