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From: Hui Kang <hkang@cs.sunysb.edu>
To: George Dunlap <dunlapg@gmail.com>
Cc: Xen-devel <xen-devel@lists.xensource.com>
Subject: Re: Is this a bug of xentrace?
Date: Mon, 11 May 2009 12:33:22 -0400	[thread overview]
Message-ID: <4A085352.7010201@cs.sunysb.edu> (raw)
In-Reply-To: <de76405a0905110142r5907dd23kfa82ecf359a8b7cc@mail.gmail.com>

Yes, it is 0x00007fff. This is one line  in the parsed trace file.
CPU1  962569711226060 (+     574)  switch_infnext    [ new_domid = 
0x00007fff, time = 14321, r_time =30000000 ]
When I use "xm list", it shows the domain id is 5. There are only two 
domains on the host.
Can any one point out what does "0x00007fff" this number mean? Thanks.

- Hui

George Dunlap wrote:
> Are you sure that's not 0x7fff? (Three f's, not four?)  0x7fff is the
> domain ID of the idle domain (scheduled when there is no other work on
> the system to do).
>
>  -George
>
> On Sat, May 9, 2009 at 7:56 PM, Hui Kang <hkang@cs.sunysb.edu> wrote:
>   
>> Hi,
>> I am using xentrace to trace the events of guest domains on a host physical
>> machine.  In the parsed trace file,
>> if the guest domain is created on the host machine, then the entry is good
>> switch_infprev    [ old_domid = 0x00000002
>> // the guest domain has a id of 2.
>> switch_infnext    [ new_domid = 0x00000000
>>
>> However, if the guest domain is migrated from another host machine,  the
>> parsed trace file shows
>> switch_infprev    [ old_domid = 0x00007ffff
>> // the guest domain has a id of 2.
>> switch_infnext    [ new_domid = 0x00000000
>> Even the domain Id is 2, it shows 0x00007ffff.
>> Can anyone explain this? Thanks.
>>
>>
>>
>>
>> _______________________________________________
>> Xen-devel mailing list
>> Xen-devel@lists.xensource.com
>> http://lists.xensource.com/xen-devel
>>
>>     
>
> _______________________________________________
> Xen-devel mailing list
> Xen-devel@lists.xensource.com
> http://lists.xensource.com/xen-devel
>
>
> .
>
>   

  reply	other threads:[~2009-05-11 16:33 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-05-09 18:56 Is this a bug of xentrace? Hui Kang
2009-05-11  8:42 ` George Dunlap
2009-05-11 16:33   ` Hui Kang [this message]
2009-05-11 16:46     ` Hui Kang
2009-05-11 17:55       ` George Dunlap

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