Re: [Xen-users] GPLPV, RDP and network latency

[Scott Damron <sdamron@xxxxxxxxx>]

So, you are running a Windows 7 system with less than a gig of RAM?
You might start there...bump it to 2 gigs and see if that helps.


2012/2/13 Kreved <krevedinho@xxxxxxxxx>:
> Hello!
>
>> My RDP connections continue uninterrupted.
>
> So do mine. It just freezes for a second when a pop-up window appears.
>
>> Does it behave the same without the PV drivers installed?
>
> No. The only two ways to workaround this problem are either to boot with 
> "NOGPLPV" or to use VNC.
>
> Also I've migrated the VM to older kernel(2.6.31.12-0.1-xen) with no success.
>
> Here's the vm config, maybe I missed something:
>
> name = 'win-seven'
> memory  = '768'
> bootloader = "hvmloader"
> disk = [
>    'file:/data/win-seven.img,hda,w',
> ]
> vif = [
>        'mac=10:78:c0:a8:69:69',
> #       'model=e1000',
> ]
> vfb = ['type=vnc,vnclisten=0.0.0.0,vncdisplay=491']
> builder='hvm'
> acpi=1
> apic=1
> boot='dc'
> usbdevice='tablet'
> timer_mode=1
>
> 09.02.2012, 02:10, "James Harper" <james.harper@xxxxxxxxxxxxxxxx>:
>>>  Hello!
>>>
>>>  Has anybody experienced network latency problems with combination of
>>>  Windows 7, GPLPV drivers and RDP connection?
>>>  Any Windows pop-up message(such as "command not found" error message
>>>  in "Run command:" dialog, or dividing by zero in windows calc) causes a 
>>> short
>>>  freeze of RDP session and looks like that from dom0:
>>>
>>>  PING 192.168.44.65 (192.168.44.65) 56(84) bytes of data.
>>>  64 bytes from 192.168.44.65: icmp_seq=1 ttl=128 time=0.649 ms
>>>  64 bytes from 192.168.44.65: icmp_seq=2 ttl=128 time=0.232 ms
>>>  64 bytes from 192.168.44.65: icmp_seq=3 ttl=128 time=0.273 ms
>>>  64 bytes from 192.168.44.65: icmp_seq=4 ttl=128 time=501 ms
>>>  64 bytes from 192.168.44.65: icmp_seq=5 ttl=128 time=0.205 ms
>>>  64 bytes from 192.168.44.65: icmp_seq=6 ttl=128 time=0.463 ms
>>>  64 bytes from 192.168.44.65: icmp_seq=7 ttl=128 time=0.206 ms
>>>
>>>  where 192.168.44.65 is domU address. The latency may vary from 500 to
>>>  10000 ms.
>>>
>>>  The very same actions taken via VNC connection to VM work fine without
>>>  any problem.
>>>  We have tried different Windows 7 distros, 32- and 64-bit editions, Windows
>>>  and Linux RDP clients, with the same result.
>>>
>>>  Software used:
>>>  Xen version 4.1.2_05-1.1.1 (abuild@) (gcc version 4.6.2 (SUSE Linux) ) Sun 
>>> Oct
>>>  30 03:25:04 UTC 2011
>>>  gplpv_Vista2008x32_signed_0.11.0.308
>>>  Windows 7 SP1
>>>
>>>  timer_mode is set to 1, offload settings are:
>>>  Offload parameters for vif2.0:
>>>  rx-checksumming: off
>>>  tx-checksumming: off
>>>  scatter-gather: off
>>>  tcp-segmentation-offload: off
>>>  udp-fragmentation-offload: off
>>>  generic-segmentation-offload: off
>>>  generic-receive-offload: off
>>>  large-receive-offload: off
>>>  rx-vlan-offload: off
>>>  tx-vlan-offload: off
>>>  ntuple-filters: off
>>>  receive-hashing: off
>>>
>>>  Thanks in advance!
>>
>> I can't reproduce this. My RDP connections continue uninterrupted.
>>
>> Does it behave the same without the PV drivers installed?
>>
>> James
>>
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>
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