From: Avi Kivity <avi@redhat.com>
To: Alexander Graf <agraf-l3A5Bk7waGM@public.gmane.org>
Cc: "kvm-ppc-u79uwXL29TY76Z2rM5mHXA@public.gmane.org"
<kvm-ppc-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
"kvm-u79uwXL29TY76Z2rM5mHXA@public.gmane.org"
<kvm-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>
Subject: Re: [PATCH 00/18] KVM: PPC: Virtualize Gekko guests
Date: Thu, 18 Feb 2010 08:04:41 +0000 [thread overview]
Message-ID: <4B7CF499.8090909@redhat.com> (raw)
In-Reply-To: <4B7CEEFF.9000801-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
On 02/18/2010 09:40 AM, Avi Kivity wrote:
>> Now you made me check how fast the real hw is. I get about 65,000,000
>> fmul operations per second on it.
>>
>
> That's surprisingly low.
I get 3.7 Gflops on my home machine (1G loops, 4 fmul and 4 fadds, all
independent, in 2.15 seconds; otherwise I can't saturate the pipeline).
--
Do not meddle in the internals of kernels, for they are subtle and quick to panic.
WARNING: multiple messages have this Message-ID (diff)
From: Avi Kivity <avi-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
To: Alexander Graf <agraf-l3A5Bk7waGM@public.gmane.org>
Cc: "kvm-ppc-u79uwXL29TY76Z2rM5mHXA@public.gmane.org"
<kvm-ppc-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
"kvm-u79uwXL29TY76Z2rM5mHXA@public.gmane.org"
<kvm-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>
Subject: Re: [PATCH 00/18] KVM: PPC: Virtualize Gekko guests
Date: Thu, 18 Feb 2010 10:04:41 +0200 [thread overview]
Message-ID: <4B7CF499.8090909@redhat.com> (raw)
In-Reply-To: <4B7CEEFF.9000801-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
On 02/18/2010 09:40 AM, Avi Kivity wrote:
>> Now you made me check how fast the real hw is. I get about 65,000,000
>> fmul operations per second on it.
>>
>
> That's surprisingly low.
I get 3.7 Gflops on my home machine (1G loops, 4 fmul and 4 fadds, all
independent, in 2.15 seconds; otherwise I can't saturate the pipeline).
--
Do not meddle in the internals of kernels, for they are subtle and quick to panic.
next prev parent reply other threads:[~2010-02-18 8:04 UTC|newest]
Thread overview: 106+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-02-04 15:55 [PATCH 00/18] KVM: PPC: Virtualize Gekko guests Alexander Graf
2010-02-04 15:55 ` Alexander Graf
2010-02-04 15:55 ` [PATCH 01/18] KVM: PPC: Add QPR registers Alexander Graf
2010-02-04 15:55 ` Alexander Graf
2010-02-04 15:55 ` [PATCH 07/18] KVM: PPC: Combine extension interrupt handlers Alexander Graf
2010-02-04 15:55 ` Alexander Graf
2010-02-04 15:55 ` [PATCH 08/18] KVM: PPC: Preload FPU when possible Alexander Graf
2010-02-04 15:55 ` Alexander Graf
2010-02-04 15:55 ` [PATCH 09/18] KVM: PPC: Fix typo in book3s_32 debug code Alexander Graf
2010-02-04 15:55 ` Alexander Graf
2010-02-04 15:55 ` [PATCH 10/18] KVM: PPC: Implement mtsr instruction emulation Alexander Graf
2010-02-04 15:55 ` Alexander Graf
2010-02-04 15:55 ` [PATCH 11/18] KVM: PPC: Make software load/store return eaddr Alexander Graf
2010-02-04 15:55 ` Alexander Graf
2010-02-04 15:55 ` [PATCH 13/18] KVM: PPC: Add helpers to call FPU instructions Alexander Graf
2010-02-04 15:55 ` Alexander Graf
[not found] ` <1265298925-31954-1-git-send-email-agraf-l3A5Bk7waGM@public.gmane.org>
2010-02-04 15:55 ` [PATCH 02/18] KVM: PPC: Enable MMIO to do 64 bits, fprs and qprs Alexander Graf
2010-02-04 15:55 ` Alexander Graf
[not found] ` <1265298925-31954-3-git-send-email-agraf-l3A5Bk7waGM@public.gmane.org>
2010-02-07 12:29 ` Avi Kivity
2010-02-07 12:29 ` Avi Kivity
[not found] ` <4B6EB229.8090502-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2010-02-07 15:51 ` Alexander Graf
2010-02-07 15:51 ` Alexander Graf
2010-02-04 15:55 ` [PATCH 03/18] KVM: PPC: Teach MMIO Signedness Alexander Graf
2010-02-04 15:55 ` Alexander Graf
[not found] ` <1265298925-31954-4-git-send-email-agraf-l3A5Bk7waGM@public.gmane.org>
2010-02-07 12:32 ` Avi Kivity
2010-02-07 12:32 ` Avi Kivity
[not found] ` <4B6EB2D7.1030500-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2010-02-07 15:51 ` Alexander Graf
2010-02-07 15:51 ` Alexander Graf
[not found] ` <3CEF000F-1751-4E65-A08A-C71B2CE8DAEE-l3A5Bk7waGM@public.gmane.org>
2010-02-07 16:15 ` Avi Kivity
2010-02-07 16:15 ` Avi Kivity
2010-02-07 16:27 ` Anthony Liguori
2010-02-07 16:27 ` Anthony Liguori
2010-02-07 21:35 ` Alexander Graf
2010-02-07 21:35 ` Alexander Graf
[not found] ` <1CA08386-21CA-4B4F-A1E6-56C4DE584BA6-l3A5Bk7waGM@public.gmane.org>
2010-02-07 22:13 ` Anthony Liguori
2010-02-07 22:13 ` Anthony Liguori
2010-02-04 15:55 ` [PATCH 04/18] KVM: PPC: Add AGAIN type for emulation return Alexander Graf
2010-02-04 15:55 ` Alexander Graf
2010-02-04 15:55 ` [PATCH 05/18] KVM: PPC: Add hidden flag for paired singles Alexander Graf
2010-02-04 15:55 ` Alexander Graf
2010-02-04 15:55 ` [PATCH 06/18] KVM: PPC: Add Gekko SPRs Alexander Graf
2010-02-04 15:55 ` Alexander Graf
2010-02-04 15:55 ` [PATCH 12/18] KVM: PPC: Make ext giveup non-static Alexander Graf
2010-02-04 15:55 ` Alexander Graf
2010-02-04 15:55 ` [PATCH 14/18] KVM: PPC: Fix error in BAT assignment Alexander Graf
2010-02-04 15:55 ` Alexander Graf
2010-02-04 15:55 ` [PATCH 15/18] KVM: PPC: Add helpers to modify ppc fields Alexander Graf
2010-02-04 15:55 ` Alexander Graf
2010-02-04 15:55 ` [PATCH 16/18] KVM: PPC: Enable program interrupt to do MMIO Alexander Graf
2010-02-04 15:55 ` Alexander Graf
2010-02-07 12:54 ` [PATCH 00/18] KVM: PPC: Virtualize Gekko guests Avi Kivity
2010-02-07 12:54 ` Avi Kivity
[not found] ` <4B6EB7F6.10304-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2010-02-07 15:49 ` Alexander Graf
2010-02-07 15:49 ` Alexander Graf
2010-02-07 16:22 ` Avi Kivity
2010-02-07 16:22 ` Avi Kivity
2010-02-07 22:02 ` Alexander Graf
2010-02-07 22:02 ` Alexander Graf
2010-02-08 8:53 ` Avi Kivity
2010-02-08 8:53 ` Avi Kivity
[not found] ` <4B6FD118.2090207-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2010-02-08 10:58 ` Alexander Graf
2010-02-08 10:58 ` Alexander Graf
[not found] ` <87CEECB5-107A-46EB-89F5-1E1F92AC22AA-l3A5Bk7waGM@public.gmane.org>
2010-02-08 11:09 ` Avi Kivity
2010-02-08 11:09 ` Avi Kivity
[not found] ` <4B6FF0E6.6060309-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2010-02-08 11:30 ` Alexander Graf
2010-02-08 11:30 ` Alexander Graf
[not found] ` <A5BC5A7E-D45B-4BAF-804A-B364810F50DA-l3A5Bk7waGM@public.gmane.org>
2010-02-08 12:03 ` Avi Kivity
2010-02-08 12:03 ` Avi Kivity
[not found] ` <4B6FFD85.6090100-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2010-02-08 12:05 ` Alexander Graf
2010-02-08 12:05 ` Alexander Graf
[not found] ` <939C8633-1B2C-4888-B1C1-357DF1C56CE6-l3A5Bk7waGM@public.gmane.org>
2010-02-08 12:15 ` Avi Kivity
2010-02-08 12:15 ` Avi Kivity
2010-02-08 12:31 ` Alexander Graf
2010-02-08 12:31 ` Alexander Graf
2010-02-09 11:00 ` Alexander Graf
2010-02-09 11:00 ` Alexander Graf
[not found] ` <4B714049.7010201-l3A5Bk7waGM@public.gmane.org>
2010-02-09 11:06 ` Avi Kivity
2010-02-09 11:06 ` Avi Kivity
2010-02-09 11:13 ` Alexander Graf
2010-02-09 11:13 ` Alexander Graf
[not found] ` <4B71435E.7010103-l3A5Bk7waGM@public.gmane.org>
2010-02-09 12:27 ` Avi Kivity
2010-02-09 12:27 ` Avi Kivity
[not found] ` <4B7154A6.6050809-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2010-02-17 14:56 ` Alexander Graf
2010-02-17 14:56 ` Alexander Graf
[not found] ` <80F0B53A-6F83-4166-8F85-5D9B07526158-l3A5Bk7waGM@public.gmane.org>
2010-02-17 16:03 ` Avi Kivity
2010-02-17 16:03 ` Avi Kivity
[not found] ` <4B7C134C.9040009-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2010-02-17 16:23 ` Alexander Graf
2010-02-17 16:23 ` Alexander Graf
2010-02-17 16:34 ` Avi Kivity
2010-02-17 16:34 ` Avi Kivity
[not found] ` <4B7C1A91.8060205-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2010-02-17 18:07 ` Alexander Graf
2010-02-17 18:07 ` Alexander Graf
[not found] ` <D3C1F39A-E9C8-46B8-9C4A-12E56D34B5AC-l3A5Bk7waGM@public.gmane.org>
2010-02-18 7:40 ` Avi Kivity
2010-02-18 7:40 ` Avi Kivity
[not found] ` <4B7CEEFF.9000801-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2010-02-18 8:04 ` Avi Kivity [this message]
2010-02-18 8:04 ` Avi Kivity
2010-02-04 15:55 ` [PATCH 17/18] KVM: PPC: Reserve a chunk of memory for opcodes Alexander Graf
2010-02-04 15:55 ` Alexander Graf
2010-02-04 15:55 ` [PATCH 18/18] KVM: PPC: Implement Paired Single emulation Alexander Graf
2010-02-04 15:55 ` Alexander Graf
[not found] ` <1265298925-31954-19-git-send-email-agraf-l3A5Bk7waGM@public.gmane.org>
2010-02-07 12:50 ` Avi Kivity
2010-02-07 12:50 ` Avi Kivity
2010-02-07 15:57 ` Alexander Graf
2010-02-07 15:57 ` Alexander Graf
2010-02-07 16:18 ` Avi Kivity
2010-02-07 16:18 ` Avi Kivity
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