RE: [PATCH][RESEND]RE: [Xen-ia64-devel] [PATCH 0/6] Add fullevtchnmechanism for xen/ia64

["Tian, Kevin" <kevin.tian@xxxxxxxxx>]

Hi, Alex,
        I didn't observe same phenomenon as yours, though network 
output of VTI is slowed down by about 80% when domU is doing 
network at same time. The possible cause for the slowdown may be 
from that netback occupies too much time which consequently reduces 
cycles for qemu process and thus VTI network is affected a lot.

        When you say "blocked" state, does it mean "-b----" by xm list or 
the network process is blocked? The first is always possible since VTI 
domain needs to block for qemu emulation. If the second..., how many 
processors have your box been configured? If domU and domVTI are 
running on same processor, above slowdown may be worse since I 
made test on a 4-P box with dom0/domU/domVTI running invidually.

Thanks,
Kevin

>-----Original Message-----
>From: xen-ia64-devel-bounces@xxxxxxxxxxxxxxxxxxx
>[mailto:xen-ia64-devel-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of
>Tian, Kevin
>Sent: 2006年5月24日 11:20
>To: Alex Williamson
>Cc: xen-ia64-devel@xxxxxxxxxxxxxxxxxxx
>Subject: RE: [PATCH][RESEND]RE: [Xen-ia64-devel] [PATCH 0/6] Add
>fullevtchnmechanism for xen/ia64
>
>>From: Alex Williamson [mailto:alex.williamson@xxxxxx]
>>Sent: 2006年5月24日 1:12
>>
>>
>>  Applied.  I dropped the buildconfig change from 6/6, but I see why
>>you
>>added it since that driver seems to register an IRQ all the time.
>>Please send a separate patch to turn off that audio driver for all of
>>the ia64 buildconfigs.  Also, not sure if it's related to these patches,
>>but I can get a VTi domain into a blocked state by trying to do network
>>in both domU and DomVTi concurrently.  Thanks,
>>
>>      Alex
>>
>
>Hi, Alex,
>       Thanks a lot for pushing in. Attached is the patch for buildconfig file.
>
>       I'm trying now to see whether I can reproduce your observation,
>which is a new test model. :-)
>
>Thanks,
>Kevin

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