From: Marcelo Tosatti <mtosatti@redhat.com>
To: Avi Kivity <avi@qumranet.com>
Cc: Chris Wright <chrisw@redhat.com>,
Glauber Costa <gcosta@redhat.com>,
Anthony Liguori <aliguori@us.ibm.com>,
kvm@vger.kernel.org
Subject: Re: [patch 00/12] fake ACPI C2 emulation v2
Date: Mon, 2 Jun 2008 13:08:59 -0300 [thread overview]
Message-ID: <20080602160859.GA3502@dmt.cnet> (raw)
In-Reply-To: <48426A19.4010000@qumranet.com>
On Sun, Jun 01, 2008 at 12:21:29PM +0300, Avi Kivity wrote:
> Marcelo Tosatti wrote:
>> Addressing comments on the previous patchset, follows:
>>
>> - Same fake C2 emulation
>> - /dev/pmtimer
>> - Support for multiple IO bitmap pages + userspace interface
>> - In-kernel ACPI pmtimer emulation
>>
>> Tested with Linux and WinXP guests. Also tested migration.
>>
>
> Do you have any performance numbers, comparing qemu/kernel/passthrough?
Test is 1 million gettimeofday calls, Xeon 1.60GHz with 4MB L2.
guest (qemu emulation):
cycles:1189759332
guest (in-kernel emulation):
cycles:628046412
guest (direct pmtimer):
cycles:230372934
host (TSC):
cycles:14862774
> [Real review will be delayed as I am travelling; will try to do as much as
> I can]
OK!
next prev parent reply other threads:[~2008-06-02 16:13 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-05-29 22:22 [patch 00/12] fake ACPI C2 emulation v2 Marcelo Tosatti
2008-05-29 22:22 ` [patch 01/12] expose ACPI pmtimer to userspace (/dev/pmtimer) Marcelo Tosatti
2008-06-01 16:34 ` Thomas Gleixner
2008-06-01 16:56 ` Anthony Liguori
2008-06-04 9:53 ` Avi Kivity
2008-06-04 10:01 ` Thomas Gleixner
2008-06-04 10:35 ` Avi Kivity
2008-06-01 17:56 ` Marcelo Tosatti
2008-06-01 18:17 ` Thomas Gleixner
2008-06-02 16:43 ` John Stultz
2008-06-03 4:09 ` Marcelo Tosatti
2008-05-29 22:22 ` [patch 02/12] KVM: allow multiple IO bitmap pages, provide userspace interface Marcelo Tosatti
2008-05-29 22:22 ` [patch 03/12] KVM: allow userspace to open access to ACPI pmtimer Marcelo Tosatti
2008-05-29 22:22 ` [patch 04/12] KVM: move muldiv64 to x86.c, export Marcelo Tosatti
2008-05-29 22:22 ` [patch 05/12] KVM: in-kernel ACPI timer emulation Marcelo Tosatti
2008-05-29 22:22 ` [patch 06/12] QEMU/KVM: self-disabling C2 emulation Marcelo Tosatti
2008-05-29 22:22 ` [patch 07/12] libkvm: interface to KVM_SET_OPEN_IOPORT Marcelo Tosatti
2008-05-29 22:22 ` [patch 08/12] QEMU/KVM: non-virtualized ACPI PMTimer support Marcelo Tosatti
2008-05-29 22:22 ` [patch 09/12] libkvm: in-kernel ACPI pmtimer interface Marcelo Tosatti
2008-05-29 22:22 ` [patch 10/12] QEMU/KVM: add option to disable in-kernel pmtimer emulation Marcelo Tosatti
2008-05-29 22:23 ` [patch 11/12] libkvm: interface for pmtimer save/restore Marcelo Tosatti
2008-05-29 22:23 ` [patch 12/12] QEMU/KVM: in-kernel pmtimer save/restore support Marcelo Tosatti
2008-06-01 9:21 ` [patch 00/12] fake ACPI C2 emulation v2 Avi Kivity
2008-06-02 16:08 ` Marcelo Tosatti [this message]
2008-06-04 10:49 ` Avi Kivity
2008-06-05 3:12 ` Marcelo Tosatti
2008-06-05 7:56 ` Avi Kivity
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