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[Xen-devel] Re: About pit irq

  • To: "Tian, Kevin" <kevin.tian@xxxxxxxxx>, 'xen-devel' <xen-devel@xxxxxxxxxxxxxxxxxxx>
  • From: Keir Fraser <keir.fraser@xxxxxxxxxxxxx>
  • Date: Wed, 19 Nov 2008 08:50:19 +0000
  • Cc:
  • Delivery-date: Wed, 19 Nov 2008 00:50:42 -0800
  • List-id: Xen developer discussion <xen-devel.lists.xensource.com>
  • Thread-index: AclJ6rZmkfZkqKK6QNCPP6epkry8AQANMC+dAAAN6CAAAQqv4Q==
  • Thread-topic: About pit irq
On 19/11/08 08:22, "Tian, Kevin" <kevin.tian@xxxxxxxxx> wrote:

> I see. Yes, a slower tick is better since maximum overflow for
> pit ch2 is about 54ms, and xen has already be a tickless
> model.

Most systems will have ACPI PM or HPET timer though, right? Does PIT
platform timer inefficiency matter? Hacking on it more is a pain.

 -- Keir



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