[Xen-devel] RE: Rather slow time of Pin in Windows with GPL PV driver

[MaoXiaoyun <tinnycloud@xxxxxxxxxxx>]

I may try pin later, my host has 4 * 4 core CPU.
 
Well, I just compare GPL and RHEL PV driver codes, I noticed most of the net driver
initialization is the same. Only one difference, in  GPL code has the code of
KeSetTargetProcessorDpc(&xi->rx_dpc, 0); //in xennet_rx.c line 953
but the RHEL doesn't
 
So I simply comments the code, recompile and did the test again.
The result shows good, all ping time less than < 1ms.
 
May it be the cause? Is it harmful to comments this line?
Many thanks.

 
> Subject: RE: Rather slow time of Pin in Windows with GPL PV driver
> Date: Wed, 9 Mar 2011 22:02:17 +1100
> From: james.harper@xxxxxxxxxxxxxxxx
> To: tinnycloud@xxxxxxxxxxx
>
> >
> > 8 vcpus
> > time_mode is 1
> >
>
> Can you pin all 8 cores to that DomU?
>
> How many total cores on the physical machine?
>
> When I try I get mostly time=1ms and time<1ms with occasional higher
> single digit values. This time of night probably isn't such a good time
> to be ping testing for me because my system is running backups which is
> pretty intensive - it's only a dual core AMD running a few VM's.
>
> James

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