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[Xen-devel] bad interaction between boosted idle vcpus and csched's tick
| To: | "Keir Fraser" <keir.fraser@xxxxxxxxxxxxx> |
|---|---|
| Subject: | [Xen-devel] bad interaction between boosted idle vcpus and csched's tickling? |
| From: | "Jan Beulich" <JBeulich@xxxxxxxxxx> |
| Date: | Fri, 07 May 2010 13:36:11 +0100 |
| Cc: | xen-devel@xxxxxxxxxxxxxxxxxxx |
| Delivery-date: | Fri, 07 May 2010 05:36:10 -0700 |
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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?
Jan
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