From: Avi Kivity <avi-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
To: Gregory Haskins <ghaskins-Et1tbQHTxzrQT0dZR+AlfA@public.gmane.org>
Cc: kvm-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org
Subject: Re: [PATCH 00/10] in-kernel APIC v3 (kernel side)
Date: Sun, 13 May 2007 15:38:23 +0300 [thread overview]
Message-ID: <464706BF.6000808@qumranet.com> (raw)
In-Reply-To: <4642E39D.BA47.005A.0-Et1tbQHTxzrQT0dZR+AlfA@public.gmane.org>
Gregory Haskins wrote:
> The load-average on my system is about 1 while XP is idling. qemu seems to be mostly at "0%" but will bounce up to 1% on occasion. Here is the output of "top -b -p <qemu-pid>" over a few seconds:
>
> top - 09:17:45 up 16:58, 3 users, load average: 1.02, 0.86, 0.42
> Tasks: 1 total, 0 running, 1 sleeping, 0 stopped, 0 zombie
> Cpu(s): 0.1%us, 0.2%sy, 0.0%ni, 99.5%id, 0.1%wa, 0.0%hi, 0.1%si, 0.0%st
> Mem: 3994704k total, 2018980k used, 1975724k free, 70996k buffers
> Swap: 2104472k total, 0k used, 2104472k free, 1148284k cached
>
> PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
> 10359 ghaskins 15 0 598m 83m 75m S 0 2.1 1:37.87 qemu-system-x86
>
A good test is to let Windows boot and idle itself, then compare the
process cpu time under the TIME+ column with model-0 and model-1.
Since the vast majority of exits in the scenario are hitting the tpr,
I'd be unsurprised if the time if 50% lower or so.
--
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next prev parent reply other threads:[~2007-05-13 12:38 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-05-10 12:46 [PATCH 00/10] in-kernel APIC v3 (kernel side) Gregory Haskins
[not found] ` <20070510123831.10200.4769.stgit-sLgBBP33vUGnsjUZhwzVf9HuzzzSOjJt@public.gmane.org>
2007-05-10 12:46 ` [PATCH 01/10] KVM: Adds support for in-kernel mmio handlers Gregory Haskins
2007-05-10 12:46 ` [PATCH 02/10] KVM: VMX - fix interrupt checking on light-exit Gregory Haskins
2007-05-10 12:46 ` [PATCH 03/10] KVM: Add irqdevice object Gregory Haskins
2007-05-10 12:47 ` [PATCH 04/10] KVM: Adds ability to preempt an executing VCPU Gregory Haskins
2007-05-10 12:47 ` [PATCH 05/10] KVM: Adds ability to signal userspace using a file-descriptor Gregory Haskins
[not found] ` <20070510124706.10200.68571.stgit-sLgBBP33vUGnsjUZhwzVf9HuzzzSOjJt@public.gmane.org>
2007-05-13 13:00 ` Avi Kivity
[not found] ` <46470BF7.5080108-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2007-05-14 12:15 ` Gregory Haskins
[not found] ` <46481A61.BA47.005A.0-Et1tbQHTxzrQT0dZR+AlfA@public.gmane.org>
2007-05-14 12:22 ` Avi Kivity
[not found] ` <46485488.2010608-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2007-05-14 14:00 ` Gregory Haskins
[not found] ` <46483320.BA47.005A.0-Et1tbQHTxzrQT0dZR+AlfA@public.gmane.org>
2007-05-14 14:42 ` Avi Kivity
[not found] ` <4648756D.5040001-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2007-05-14 17:18 ` Gregory Haskins
2007-05-14 16:52 ` Davide Libenzi
[not found] ` <Pine.LNX.4.64.0705140948150.19682-GPJ85BhbkB8RepQJljzAVbITYcZ0+W3JAL8bYrjMMd8@public.gmane.org>
2007-05-14 17:12 ` Avi Kivity
[not found] ` <4648986B.9090403-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2007-05-14 17:15 ` Davide Libenzi
[not found] ` <Pine.LNX.4.64.0705141013310.19682-GPJ85BhbkB8RepQJljzAVbITYcZ0+W3JAL8bYrjMMd8@public.gmane.org>
2007-05-14 17:23 ` Avi Kivity
[not found] ` <46489B12.8030807-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2007-05-14 19:01 ` Gregory Haskins
[not found] ` <464879A3.BA47.005A.0-Et1tbQHTxzrQT0dZR+AlfA@public.gmane.org>
2007-05-14 19:12 ` Davide Libenzi
[not found] ` <Pine.LNX.4.64.0705141207070.19682-GPJ85BhbkB8RepQJljzAVbITYcZ0+W3JAL8bYrjMMd8@public.gmane.org>
2007-05-14 20:18 ` Gregory Haskins
[not found] ` <46488BCD.BA47.005A.0-Et1tbQHTxzrQT0dZR+AlfA@public.gmane.org>
2007-05-14 21:32 ` Davide Libenzi
2007-05-10 12:47 ` [PATCH 06/10] KVM: Add support for in-kernel LAPIC model Gregory Haskins
2007-05-10 12:47 ` [PATCH 07/10] KVM: Adds support for real NMI injection on VMX processors Gregory Haskins
2007-05-10 12:47 ` [PATCH 08/10] KVM: Adds basic plumbing to support TPR shadow features Gregory Haskins
2007-05-10 12:47 ` [PATCH 09/10] KVM: Add statistics from interrupt subsystem Gregory Haskins
[not found] ` <20070510124726.10200.53053.stgit-sLgBBP33vUGnsjUZhwzVf9HuzzzSOjJt@public.gmane.org>
2007-05-14 11:17 ` Avi Kivity
2007-05-10 12:47 ` [PATCH 10/10] KVM: Adds support for TPR shadowing under VMX processors Gregory Haskins
2007-05-10 13:07 ` [PATCH 00/10] in-kernel APIC v3 (kernel side) Dor Laor
[not found] ` <64F9B87B6B770947A9F8391472E032160BBA66AF-yEcIvxbTEBqsx+V+t5oei8rau4O3wl8o3fe8/T/H7NteoWH0uzbU5w@public.gmane.org>
2007-05-10 13:20 ` Gregory Haskins
[not found] ` <4642E39D.BA47.005A.0-Et1tbQHTxzrQT0dZR+AlfA@public.gmane.org>
2007-05-13 8:00 ` Dor Laor
[not found] ` <64F9B87B6B770947A9F8391472E032160BC745D3-yEcIvxbTEBqsx+V+t5oei8rau4O3wl8o3fe8/T/H7NteoWH0uzbU5w@public.gmane.org>
2007-05-13 13:59 ` Gregory Haskins
[not found] ` <4646E16D.BA47.005A.0-Et1tbQHTxzrQT0dZR+AlfA@public.gmane.org>
2007-05-13 14:06 ` Dor Laor
[not found] ` <64F9B87B6B770947A9F8391472E032160BC74642-yEcIvxbTEBqsx+V+t5oei8rau4O3wl8o3fe8/T/H7NteoWH0uzbU5w@public.gmane.org>
2007-05-14 12:37 ` Gregory Haskins
[not found] ` <46481FC0.BA47.005A.0-Et1tbQHTxzrQT0dZR+AlfA@public.gmane.org>
2007-05-14 13:04 ` Dor Laor
2007-05-13 12:38 ` Avi Kivity [this message]
[not found] ` <464706BF.6000808-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2007-05-14 11:59 ` Gregory Haskins
[not found] ` <464816AB.BA47.005A.0-Et1tbQHTxzrQT0dZR+AlfA@public.gmane.org>
2007-05-14 12:05 ` Dor Laor
2007-05-14 12:14 ` Avi Kivity
2007-05-10 13:32 ` Gregory Haskins
2007-05-13 13:10 ` Avi Kivity
[not found] ` <46470E58.2040208-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2007-05-14 12:23 ` Gregory Haskins
[not found] ` <46481C4B.BA47.005A.0-Et1tbQHTxzrQT0dZR+AlfA@public.gmane.org>
2007-05-14 12:24 ` Avi Kivity
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