* need help about CPU offline/hotplug in Xen Unstable
@ 2009-05-12 14:47 Ting Shen
2009-05-12 15:02 ` Keir Fraser
0 siblings, 1 reply; 7+ messages in thread
From: Ting Shen @ 2009-05-12 14:47 UTC (permalink / raw)
To: xen-devel
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I've noticed this section in Xen 3.4 News(
http://mail-index.netbsd.org/port-xen/2009/03/02/msg004800.html):
CPU offline/hotplug: Xen 3.4 can offline
physical CPUs on CPU-core granularity.
CPU hotplugging works on CPU granularity.
It's meant as an recover-action for the case
of machine-check errors. This feature
requires Dom0 support to utilize it.
This feature has been almost tested
on Intel-CPUs only.
Then I downloaded the stable version from xen.org and installed.
But since the document is not updated, I don't know the detail method to
offline a physical CPU.
Can anyone give me the hint? Thanks very much!
--
Yours Sincerely,
Ting Shen
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^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: need help about CPU offline/hotplug in Xen Unstable
2009-05-12 14:47 need help about CPU offline/hotplug in Xen Unstable Ting Shen
@ 2009-05-12 15:02 ` Keir Fraser
2009-05-13 2:01 ` Jiang, Yunhong
2009-05-13 4:29 ` ChristieShum
0 siblings, 2 replies; 7+ messages in thread
From: Keir Fraser @ 2009-05-12 15:02 UTC (permalink / raw)
To: Ting Shen, xen-devel
On 12/05/2009 15:47, "Ting Shen" <christieshum@gmail.com> wrote:
> Then I downloaded the stable version from xen.org <http://xen.org> and
> installed.
> But since the document is not updated, I don't know the detail method to
> offline a physical CPU.
It's available as a library function (xc_cpu_offline) but not actually
plumbed into a xm command, or other tool.
-- Keir
^ permalink raw reply [flat|nested] 7+ messages in thread
* RE: need help about CPU offline/hotplug in Xen Unstable
2009-05-12 15:02 ` Keir Fraser
@ 2009-05-13 2:01 ` Jiang, Yunhong
2009-05-13 4:29 ` ChristieShum
1 sibling, 0 replies; 7+ messages in thread
From: Jiang, Yunhong @ 2009-05-13 2:01 UTC (permalink / raw)
To: Keir Fraser, Ting Shen, xen-devel
We have a tools to achieve that (i.e. xm command). But as Xen tree is closed now, so we are waiting for it be open again and will send it out.
--jyh
xen-devel-bounces@lists.xensource.com wrote:
> On 12/05/2009 15:47, "Ting Shen" <christieshum@gmail.com> wrote:
>
>> Then I downloaded the stable version from xen.org <http://xen.org>
>> and installed. But since the document is not updated, I don't know
>> the detail method to offline a physical CPU.
>
> It's available as a library function (xc_cpu_offline) but not actually
> plumbed into a xm command, or other tool.
>
> -- Keir
>
>
>
> _______________________________________________
> Xen-devel mailing list
> Xen-devel@lists.xensource.com
> http://lists.xensource.com/xen-devel
^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: Re: need help about CPU offline/hotplug in Xen Unstable
2009-05-12 15:02 ` Keir Fraser
2009-05-13 2:01 ` Jiang, Yunhong
@ 2009-05-13 4:29 ` ChristieShum
2009-05-13 4:55 ` Ke, Liping
1 sibling, 1 reply; 7+ messages in thread
From: ChristieShum @ 2009-05-13 4:29 UTC (permalink / raw)
To: Xen-devel
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Thanks a lot.
Is there a sample or tutorial for how to implement the offline process
using this library?
On May 12, 2009 11:02pm, Keir Fraser <keir.fraser@eu.citrix.com> wrote:
> On 12/05/2009 15:47, "Ting Shen" christieshum@gmail.com> wrote:
> > Then I downloaded the stable version from xen.org http://xen.org> and
> > installed.
> > But since the document is not updated, I don't know the detail method to
> > offline a physical CPU.
> It's available as a library function (xc_cpu_offline) but not actually
> plumbed into a xm command, or other tool.
> -- Keir
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http://lists.xensource.com/xen-devel
^ permalink raw reply [flat|nested] 7+ messages in thread
* RE: Re: need help about CPU offline/hotplug in Xen Unstable
2009-05-13 4:29 ` ChristieShum
@ 2009-05-13 4:55 ` Ke, Liping
2009-05-13 5:40 ` Ting Shen
0 siblings, 1 reply; 7+ messages in thread
From: Ke, Liping @ 2009-05-13 4:55 UTC (permalink / raw)
To: ChristieShum, Xen-devel
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please try below test code piece. Hope it could help you.
Thanks& Regards,
Criping
#include <stdio.h>
#include <stdlib.h>
#include <xenctrl.h>
int main(int argc, char *argv[] )
{
int cpu, xc_id;
if ( argc < 2) {
printf("Please input offline CPU-id\n");
exit(0);
}
cpu = atoi(argv[1]);
printf("Offline CPU %d\n", cpu);
xc_id = xc_interface_open();
xc_cpu_offline(xc_id, cpu);
printf("CPU offlined\n");
xc_interface_close(xc_id);
return 0;
}
________________________________
From: xen-devel-bounces@lists.xensource.com [mailto:xen-devel-bounces@lists.xensource.com] On Behalf Of ChristieShum@gmail.com
Sent: 2009年5月13日 12:30
To: Xen-devel
Subject: Re: Re: [Xen-devel] need help about CPU offline/hotplug in Xen Unstable
Thanks a lot.
Is there a sample or tutorial for how to implement the offline process using this library?
On May 12, 2009 11:02pm, Keir Fraser <keir.fraser@eu.citrix.com> wrote:
> On 12/05/2009 15:47, "Ting Shen" christieshum@gmail.com> wrote:
>
>
>
> > Then I downloaded the stable version from xen.org http://xen.org> and
>
> > installed.
>
> > But since the document is not updated, I don't know the detail method to
>
> > offline a physical CPU.
>
>
>
> It's available as a library function (xc_cpu_offline) but not actually
>
> plumbed into a xm command, or other tool.
>
>
>
> -- Keir
>
>
>
>
>
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http://lists.xensource.com/xen-devel
^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: Re: need help about CPU offline/hotplug in Xen Unstable
2009-05-13 4:55 ` Ke, Liping
@ 2009-05-13 5:40 ` Ting Shen
0 siblings, 0 replies; 7+ messages in thread
From: Ting Shen @ 2009-05-13 5:40 UTC (permalink / raw)
To: Ke, Liping; +Cc: Xen-devel
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Yes, It works well. Thank you very much indeed!
2009/5/13 Ke, Liping <liping.ke@intel.com>
> please try below test code piece. Hope it could help you.
>
> Thanks& Regards,
> Criping
>
> #include <stdio.h>
> #include <stdlib.h>
>
> #include <xenctrl.h>
>
> int main(int argc, char *argv[] )
> {
> int cpu, xc_id;
> if ( argc < 2) {
> printf("Please input offline CPU-id\n");
> exit(0);
> }
> cpu = atoi(argv[1]);
> printf("Offline CPU %d\n", cpu);
> xc_id = xc_interface_open();
> xc_cpu_offline(xc_id, cpu);
> printf("CPU offlined\n");
> xc_interface_close(xc_id);
> return 0;
> }
>
> ------------------------------
> *From:* xen-devel-bounces@lists.xensource.com [mailto:
> xen-devel-bounces@lists.xensource.com] *On Behalf Of *
> ChristieShum@gmail.com
> *Sent:* 2009年5月13日 12:30
> *To:* Xen-devel
> *Subject:* Re: Re: [Xen-devel] need help about CPU offline/hotplug in Xen
> Unstable
>
> Thanks a lot.
> Is there a sample or tutorial for how to implement the offline process
> using this library?
>
> On May 12, 2009 11:02pm, Keir Fraser <keir.fraser@eu.citrix.com> wrote:
> > On 12/05/2009 15:47, "Ting Shen" christieshum@gmail.com> wrote:
> >
> >
> >
> > > Then I downloaded the stable version from xen.org http://xen.org> and
> >
> > > installed.
> >
> > > But since the document is not updated, I don't know the detail method
> to
> >
> > > offline a physical CPU.
> >
> >
> >
> > It's available as a library function (xc_cpu_offline) but not actually
> >
> > plumbed into a xm command, or other tool.
> >
> >
> >
> > -- Keir
> >
> >
> >
> >
> >
>
--
Yours Sincerely,
Ting Shen
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_______________________________________________
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http://lists.xensource.com/xen-devel
^ permalink raw reply [flat|nested] 7+ messages in thread
* need help about CPU offline/hotplug in Xen Unstable
@ 2009-05-12 14:44 沈霆
0 siblings, 0 replies; 7+ messages in thread
From: 沈霆 @ 2009-05-12 14:44 UTC (permalink / raw)
To: xen-devel
[-- Attachment #1.1: Type: text/plain, Size: 651 bytes --]
I've noticed this section in Xen 3.4 News(
http://mail-index.netbsd.org/port-xen/2009/03/02/msg004800.html):
CPU offline/hotplug: Xen 3.4 can offline
physical CPUs on CPU-core granularity.
CPU hotplugging works on CPU granularity.
It's meant as an recover-action for the case
of machine-check errors. This feature
requires Dom0 support to utilize it.
This feature has been almost tested
on Intel-CPUs only.
Then I downloaded the stable version from xen.org and installed.
But since the document is not updated, I don't know the detail method
to offline a physical CPU.
Can anyone give me the hint? Thanks very much!
--
Yours Sincerely,
Ting Shen
[-- Attachment #1.2: Type: text/html, Size: 837 bytes --]
[-- Attachment #2: Type: text/plain, Size: 138 bytes --]
_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xensource.com
http://lists.xensource.com/xen-devel
^ permalink raw reply [flat|nested] 7+ messages in thread
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2009-05-12 14:47 need help about CPU offline/hotplug in Xen Unstable Ting Shen
2009-05-12 15:02 ` Keir Fraser
2009-05-13 2:01 ` Jiang, Yunhong
2009-05-13 4:29 ` ChristieShum
2009-05-13 4:55 ` Ke, Liping
2009-05-13 5:40 ` Ting Shen
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2009-05-12 14:44 沈霆
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