From: Paul Brook <paul@codesourcery.com>
To: qemu-devel@nongnu.org
Cc: Beth Kon <eak@us.ibm.com>, Alexander Graf <agraf@suse.de>,
kvm@vger.kernel.org
Subject: Re: [Qemu-devel] [RFC][PATCH] Add HPET emulation to qemu (v2)
Date: Sat, 2 Aug 2008 12:42:29 +0100 [thread overview]
Message-ID: <200808021242.30784.paul@codesourcery.com> (raw)
In-Reply-To: <1217675114-17670-1-git-send-email-eak@us.ibm.com>
> I've been playing with CONFIG_NO_HZ and been surprised by the
> results. I was trying to reproduce the wakeup every 10ms that
> Samuel Thibault mentioned, thinking the HPET would improve it.
> But for an idle guest in both cases (with and without HPET), the
> number of wakeups per second was relatively low (28). Ultimately
> this depends on exactly what the guest is doing
Linux can use the existing acpi PM timer a NO_HZ clocksource.
Paul
prev parent reply other threads:[~2008-08-02 11:42 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-08-02 11:05 [RFC][PATCH] Add HPET emulation to qemu (v2) Beth Kon
2008-08-02 11:05 ` [Qemu-devel] " Beth Kon
2008-08-02 11:38 ` Samuel Thibault
2008-08-02 11:38 ` [Qemu-devel] " Samuel Thibault
2008-08-02 14:46 ` Anthony Liguori
2008-08-02 17:21 ` Samuel Thibault
2008-08-02 17:21 ` Samuel Thibault
2008-08-02 17:26 ` Samuel Thibault
2008-08-12 16:33 ` Beth Kon
2008-08-12 16:33 ` Beth Kon
2008-08-02 11:42 ` Paul Brook [this message]
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