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Re: [Xen-devel] About Xenoprof support in pvops

To: xen-devel@xxxxxxxxxxxxxxxxxxx
Subject: Re: [Xen-devel] About Xenoprof support in pvops
From: Wei Wang2 <wei.wang2@xxxxxxx>
Date: Tue, 21 Sep 2010 11:39:11 +0200
Cc: Xiang Song <classicxsong@xxxxxxxxx>
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On Thursday 09 September 2010 18:13:29 Xiang Song wrote:
> Hi, list:
> I am trying to do some profile work on Xen 4.0 with pvops kernel on an AMD
> machine (equipped with AMD 'Istanbul' Family 10h processors). I have found
> the dulloor's xenoprof patch for pvops kernel. But it does not contain
> supports for IBS. The only IBS support for xenoprofile posted by Wei Wang
> seems to be for 2.6.18-dom0 kernel. So is there any support for pvops
> kernel to use IBS on AMD?
Currently, we have no plan to support IBS on pv_ops.

> Another question is when i am using normal profiling event (such as
> L2_MISS) on my AMD machine, it seems that it does not generate interrupt
> when the performance counter overflows. Is there any problem with AMD
> processor or the xenoprofile patch?
Which xenoprofile patch are you testing? For pv_ops or for 2.6.18-dom0?


> Thanks,
>     Best regards

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