|
xen-devel
RE: [Xen-devel] [PATCH] TSC scaling for live migration between platforms
|
To: |
John Levon <levon@xxxxxxxxxxxxxxxxx>, Dan Magenheimer <dan.magenheimer@xxxxxxxxxx> |
|
Subject: |
RE: [Xen-devel] [PATCH] TSC scaling for live migration between platforms with different TSC frequecies |
|
From: |
"Dong, Eddie" <eddie.dong@xxxxxxxxx> |
|
Date: |
Fri, 19 Jun 2009 07:49:00 +0800 |
|
Accept-language: |
en-US |
|
Acceptlanguage: |
en-US |
|
Cc: |
Ian Pratt <Ian.Pratt@xxxxxxxxxxxxx>, "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx>, "Dong, Eddie" <eddie.dong@xxxxxxxxx>, Keir Fraser <Keir.Fraser@xxxxxxxxxxxxx>, "Zhang, Xiantao" <xiantao.zhang@xxxxxxxxx> |
|
Delivery-date: |
Thu, 18 Jun 2009 16:50:34 -0700 |
|
Envelope-to: |
www-data@xxxxxxxxxxxxxxxxxxx |
|
In-reply-to: |
<20090618164535.GA30082@xxxxxxxxxxxxxxxxx> |
|
List-help: |
<mailto:xen-devel-request@lists.xensource.com?subject=help> |
|
List-id: |
Xen developer discussion <xen-devel.lists.xensource.com> |
|
List-post: |
<mailto:xen-devel@lists.xensource.com> |
|
List-subscribe: |
<http://lists.xensource.com/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=subscribe> |
|
List-unsubscribe: |
<http://lists.xensource.com/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=unsubscribe> |
|
References: |
<4FA716B1526C7C4DB0375C6DADBC4EA3417372D32E@xxxxxxxxxxxxxxxxxxxxxxxxx> <8ef68a49-a145-4de2-898c-ab5e27937028@default> <20090618164535.GA30082@xxxxxxxxxxxxxxxxx> |
|
Sender: |
xen-devel-bounces@xxxxxxxxxxxxxxxxxxx |
|
Thread-index: |
AcnwNKUvyeKMk+8IQRmcMma1nEwZMAAOghCw |
|
Thread-topic: |
[Xen-devel] [PATCH] TSC scaling for live migration between platforms with different TSC frequecies |
>> question is: If it is important to ALWAYS emulate RDTSC,
>> can the Xen code be written to handle RDTSC emulation
>> much faster? If it could be made fast enough, the
This is in our plan. The perf overhead of sysbench.oltp could be ~10% due to
rdtsc exiting. But even with optimization, we still need this software scaling
as a fall back.
>I'd be amazed if this were possible.
We posted the idea several weeks ago. See
http://lists.xensource.com/archives/html/xen-devel/2009-04/msg00890.html.
Will that impact Solaris?
_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel
|
| <Prev in Thread] |
Current Thread |
[Next in Thread>
|
- RE: [Xen-devel] [PATCH] TSC scaling for live migration between platforms with different TSC frequecies, (continued)
- RE: [Xen-devel] [PATCH] TSC scaling for live migration between platforms with different TSC frequecies,
Dong, Eddie <=
- RE: [Xen-devel] [PATCH] TSC scaling for live migration between platforms with different TSC frequecies, Zhang, Xiantao
- Re: [Xen-devel] [PATCH] TSC scaling for live migration between platforms with different TSC frequecies, John Levon
- RE: [Xen-devel] [PATCH] TSC scaling for live migration between platforms with different TSC frequecies, Zhang, Xiantao
- RE: [Xen-devel] [PATCH] TSC scaling for live migration between platforms with different TSC frequecies, Dan Magenheimer
- RE: [Xen-devel] [PATCH] TSC scaling for live migration between platforms with different TSC frequecies, Zhang, Xiantao
RE: [Xen-devel] [PATCH] TSC scaling for live migration between platforms with different TSC frequecies, Zhang, Xiantao
RE: [Xen-devel] [PATCH] TSC scaling for live migration between platforms with different TSC frequecies, Zhang, Xiantao
|
|
|
Home