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[Xen-users] Re: Xen pci device #0

On 30 June 2011 15:45, Liwei <xieliwei@xxxxxxxxx> wrote:
> On 30 June 2011 14:53, Liwei <xieliwei@xxxxxxxxx> wrote:
> ----snip----
>>        3. On every boot, the system is very unresponsive (mouse
>> cursor updates every 3 seconds, the login screen fade-in takes 6
>> seconds to finish) for the first 5 minutes or so.
> I think I just found the cause of this. It appears that any high
> network load causes 100% CPU utilisation. None of the processes are
> taking up the CPU cycles though, so I assume its the XenNet driver.

Just an update. Starting with a fresh XP SP3 install, I tried
installing (in that order):
    1. Latest version from hg
    2. from meadowcourt
    3. from meadowcourt
Each time reverting to initial state via System Restore.

The results were all similar:
    1. Xentop shows no block activity
    2. Unresponsive UI + bad speed when transferring files from Dom0 to VM
    3. For small files (<5MB), the above problem doesn't occur
    4. For file transfers from the VM to Dom0, the above problem
doesn't occur as well
    5. Stray Xen pci device #0 with no driver installed

The same thing occurs with check RX checksum dis/enabled.

I now suspect that something changed in the recent xen and/or kernel
(since I'm running yesterday's snapshot) that's causing this. Or is my
hardware at fault?

Please tell me if I can be of help remedying this.

>> Liwei

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