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Tomek

2009-Aug-03 07:59 UTC

[Xen-users] Windows 2008 - slow upload

Hello,

I have a Win2k8 Server machine running on updated debian lenny, with 
installed GPLPV drivers. This virtual machine will be my company''s file
server, but.... Machine without GPLPV drivers have only 100MBit if''s. 
This file server needs 1GBit interfaces. I also need ACPI shutdown from 
hypervisor option for shuting down vm for backups.

The wrong thing after installing GPLPV drivers is decreased machine 
upload. I could download about 40~60MB/s but upload runs at 10~20KB/s. 
It''s to low for anything ;/

I''ve tested this behaviour with "Checksum Offload"
enabled/disabled,
"Check checksum on RX packets" enabled/disabled and combination of
both
options. None of that works.

For now I have no idea how to fix this.

This is config file of this vm:

kernel = "/usr/lib/xen-3.2-1/boot/hvmloader"
builder = ''hvm''
memory = 3072
name = ''fileserver''
vif = [ ''bridge=brXX'' ]
disk =	[
	''phy:/dev/vgsas/dc1-sys,hda,w'',
	''file:/xen/ISO/win2k8.iso,hdb:cdrom,r'',
	]
device_model = ''/usr/lib/xen-3.2-1/bin/qemu-dm''
acpi = 1
apic = 1
#pae = 1
usb = 1
usbdevice = ''tablet''
parallel = ''none''
serial = ''pty''
localtime = 1
cpus = "0,1"
vcpus = 2

sdl = 0
vfb = [ ''type=vnc,vnclisten=192.168.x.x,vncdisplay=1'' ]

boot=''c''

on_poweroff = ''destroy''
on_reboot   = ''restart''
on_crash    = ''restart''

keymap = ''pl''


Thanks for any advices.

-- 
Greets,
Thomas.

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James Harper

2009-Aug-03 09:03 UTC

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RE: [Xen-users] Windows 2008 - slow upload

Can you please try with vcpus=1 and see if that makes any difference.
It''s not a solution but it would help me try and find one...

Thanks

James
> -----Original Message-----
> From: xen-users-bounces@lists.xensource.com [mailto:xen-users-
> bounces@lists.xensource.com] On Behalf Of Tomek
> Sent: Monday, 3 August 2009 17:59
> To: xen-users@lists.xensource.com
> Subject: [Xen-users] Windows 2008 - slow upload
> 
> Hello,
> 
> I have a Win2k8 Server machine running on updated debian lenny, with
> installed GPLPV drivers. This virtual machine will be my company''s
file> server, but.... Machine without GPLPV drivers have only 100MBit
if''s.
> This file server needs 1GBit interfaces. I also need ACPI shutdown
from> hypervisor option for shuting down vm for backups.
> 
> The wrong thing after installing GPLPV drivers is decreased machine
> upload. I could download about 40~60MB/s but upload runs at 10~20KB/s.
> It''s to low for anything ;/
> 
> I''ve tested this behaviour with "Checksum Offload"
enabled/disabled,
> "Check checksum on RX packets" enabled/disabled and combination
of
both> options. None of that works.
> 
> For now I have no idea how to fix this.
> 
> This is config file of this vm:
> 
> kernel = "/usr/lib/xen-3.2-1/boot/hvmloader"
> builder = ''hvm''
> memory = 3072
> name = ''fileserver''
> vif = [ ''bridge=brXX'' ]
> disk =	[
> 	''phy:/dev/vgsas/dc1-sys,hda,w'',
> 	''file:/xen/ISO/win2k8.iso,hdb:cdrom,r'',
> 	]
> device_model = ''/usr/lib/xen-3.2-1/bin/qemu-dm''
> acpi = 1
> apic = 1
> #pae = 1
> usb = 1
> usbdevice = ''tablet''
> parallel = ''none''
> serial = ''pty''
> localtime = 1
> cpus = "0,1"
> vcpus = 2
> 
> sdl = 0
> vfb = [ ''type=vnc,vnclisten=192.168.x.x,vncdisplay=1'' ]
> 
> boot=''c''
> 
> on_poweroff = ''destroy''
> on_reboot   = ''restart''
> on_crash    = ''restart''
> 
> keymap = ''pl''
> 
> 
> Thanks for any advices.
> 
> --
> Greets,
> Thomas.
> 
> _______________________________________________
> Xen-users mailing list
> Xen-users@lists.xensource.com
> http://lists.xensource.com/xen-users
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Tomek

2009-Aug-03 09:30 UTC

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Re: [Xen-users] Windows 2008 - slow upload

-------- Original Message  --------
Subject: Re: [Xen-users] Windows 2008 - slow upload
From: James Harper <james.harper@bendigoit.com.au>
To: Tomek <timor@o2.pl>, xen-users@lists.xensource.com
Date: 03.08.2009 11:03
> Can you please try with vcpus=1 and see if that makes any difference.
> It''s not a solution but it would help me try and find one...
I''ve changed vcpus to 1, and commented out cpus with no impact on 
networking. For now I have "Checksum Offload" and "Check checksum
on RX
packets" both disabled.

-- 
Regards,
Thomas.

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Stephen Ross

2009-Aug-03 09:32 UTC

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Re: [Xen-users] Windows 2008 - slow upload

Hi Tomek,

Where are you uploading to? I have been having very similar issues to you,
however I''ve found that my issues are specific to certain hosts on my
network.

Do other DomU''s on the same host get the same issues?

Cheers,

Steve

2009/8/3 Tomek <timor@o2.pl>
> Hello,
>
> I have a Win2k8 Server machine running on updated debian lenny, with
> installed GPLPV drivers. This virtual machine will be my company''s
file
> server, but.... Machine without GPLPV drivers have only 100MBit
if''s. This
> file server needs 1GBit interfaces. I also need ACPI shutdown from
> hypervisor option for shuting down vm for backups.
>
> The wrong thing after installing GPLPV drivers is decreased machine upload.
> I could download about 40~60MB/s but upload runs at 10~20KB/s.
It''s to low
> for anything ;/
>
> I''ve tested this behaviour with "Checksum Offload"
enabled/disabled, "Check
> checksum on RX packets" enabled/disabled and combination of both
options.
> None of that works.
>
> For now I have no idea how to fix this.
>
> This is config file of this vm:
>
> kernel = "/usr/lib/xen-3.2-1/boot/hvmloader"
> builder = ''hvm''
> memory = 3072
> name = ''fileserver''
> vif = [ ''bridge=brXX'' ]
> disk =  [
>        ''phy:/dev/vgsas/dc1-sys,hda,w'',
>        ''file:/xen/ISO/win2k8.iso,hdb:cdrom,r'',
>        ]
> device_model = ''/usr/lib/xen-3.2-1/bin/qemu-dm''
> acpi = 1
> apic = 1
> #pae = 1
> usb = 1
> usbdevice = ''tablet''
> parallel = ''none''
> serial = ''pty''
> localtime = 1
> cpus = "0,1"
> vcpus = 2
>
> sdl = 0
> vfb = [ ''type=vnc,vnclisten=192.168.x.x,vncdisplay=1'' ]
>
> boot=''c''
>
> on_poweroff = ''destroy''
> on_reboot   = ''restart''
> on_crash    = ''restart''
>
> keymap = ''pl''
>
>
> Thanks for any advices.
>
> --
> Greets,
> Thomas.
>
> _______________________________________________
> Xen-users mailing list
> Xen-users@lists.xensource.com
> http://lists.xensource.com/xen-users
>

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James Harper

2009-Aug-03 09:38 UTC

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RE: [Xen-users] Windows 2008 - slow upload

> 
> -------- Original Message  --------
> Subject: Re: [Xen-users] Windows 2008 - slow upload
> From: James Harper <james.harper@bendigoit.com.au>
> To: Tomek <timor@o2.pl>, xen-users@lists.xensource.com
> Date: 03.08.2009 11:03
> 
> > Can you please try with vcpus=1 and see if that makes any
difference.> > It''s not a solution but it would help me try and find one...
> 
> I''ve changed vcpus to 1, and commented out cpus with no impact on
> networking. For now I have "Checksum Offload" and "Check
checksum on
RX> packets" both disabled.
> 
I think I''ll need packet traces to get much further. Can you reproduce
using iperf? (it is available for both windows and linux). If you can,
then I can send you the details of the wireshark and tcpdump filters
I''ll need a capture from.

James

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Tomek

2009-Aug-03 09:50 UTC

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Re: [Xen-users] Windows 2008 - slow upload

-------- Original Message  --------
Subject: Re: [Xen-users] Windows 2008 - slow upload
From: Stephen Ross <stephen.ross1986@googlemail.com>
To: Tomek <timor@o2.pl>
Date: 03.08.2009 11:32
> Hi Tomek,
> 
> Where are you uploading to? I have been having very similar issues to 
> you, however I''ve found that my issues are specific to certain
hosts on
> my network.
> 
> Do other DomU''s on the same host get the same issues?
Good tip. I could upload to another Win2k8 based VM on the same xen 
machine with normal speed, but when uploading to different physical 
server in the same network speed decreased.

Tell me more about your problem :)

Maybe it''s not optimal VLAN''s configuration.

-- 
Regards,
Thomas.

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Matthias Reif

2009-Aug-03 11:45 UTC

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Re: [Xen-users] Windows 2008 - slow upload

xen-users-bounces@lists.xensource.com wrote on 03/08/2009 07:50:09 PM:
> -------- Original Message  --------
> Subject: Re: [Xen-users] Windows 2008 - slow upload
> From: Stephen Ross <stephen.ross1986@googlemail.com>
> To: Tomek <timor@o2.pl>
> Date: 03.08.2009 11:32
> 
> > Hi Tomek,
> > 
> > Where are you uploading to? I have been having very similar issues to 
> > you, however I''ve found that my issues are specific to
certain hosts
on > > my network.
> > 
> > Do other DomU''s on the same host get the same issues?
> 
> Good tip. I could upload to another Win2k8 based VM on the same xen 
> machine with normal speed, but when uploading to different physical 
> server in the same network speed decreased.
> 
> Tell me more about your problem :)
> 
> Maybe it''s not optimal VLAN''s configuration.
> 
Hi Tomek,

This might be a long shot, but do you have the recently released service 
pack 2 for Server 2008 installed?

I had a Server 2008 domU happily uploading (domU->dom0) at 60-80 MB/s 
until I started seeing similar symptoms to what your are describing 
(dom0->domU ok 60-80 MB/s, domU->dom0 poor 2-4 MB/s or even less). The 
start of these symptoms coincided with the installation of SP2.

I haven''t uninstalled SP2 to confirm yet as I wanted to do some 
troubleshooting first. I found that TCP transmissions from domU to dom0 
seem to pause in regular intervals for 0.5 up to 2 seconds, bringing the 
average transmission speed of large data volumes down to an unacceptable 
level.

dom0: CentOS 5.2, Xen 3.3.1
domU: Windows Server 2008 64-bit SP2, GPLPV 0.10.0.69

Below are the results of a test that I was doing using TTCP and TCPDUMP. 
Note the timestamps and how the transmission seems to freeze for up to 2 
seconds before continuing.

06:39:33.772162 IP 10.230.11.41.commplex-link > 10.230.11.42.51543: . ack 
5554177 win 65535
06:39:33.772280 IP 10.230.11.42.51543 > 10.230.11.41.commplex-link: P 
5554177:5562369(8192) ack 1 win 64240
06:39:33.772300 IP 10.230.11.41.commplex-link > 10.230.11.42.51543: . ack 
5562369 win 65535
06:39:34.126764 IP 10.230.11.42.51543 > 10.230.11.41.commplex-link: P 
5562369:5570561(8192) ack 1 win 64240
06:39:34.126793 IP 10.230.11.42.51543 > 10.230.11.41.commplex-link: P 
5570561:5578753(8192) ack 1 win 64240
06:39:34.126857 IP 10.230.11.41.commplex-link > 10.230.11.42.51543: . ack 
5570561 win 65535

[...]

06:39:34.182774 IP 10.230.11.42.51543 > 10.230.11.41.commplex-link: P 
6545409:6553601(8192) ack 1 win 64240
06:39:34.182794 IP 10.230.11.42.51543 > 10.230.11.41.commplex-link: P 
6553601:6561793(8192) ack 1 win 64240
06:39:34.182808 IP 10.230.11.41.commplex-link > 10.230.11.42.51543: . ack 
6561793 win 65535
06:39:35.477353 IP 10.230.11.42.51543 > 10.230.11.41.commplex-link: P 
6561793:6569985(8192) ack 1 win 64240
06:39:35.477375 IP 10.230.11.42.51543 > 10.230.11.41.commplex-link: P 
6569985:6578177(8192) ack 1 win 64240
06:39:35.477470 IP 10.230.11.41.commplex-link > 10.230.11.42.51543: . ack 
6578177 win 65535

[...]

06:39:35.506777 IP 10.230.11.42.51543 > 10.230.11.41.commplex-link: P 
7413761:7421953(8192) ack 1 win 64240
06:39:35.506800 IP 10.230.11.42.51543 > 10.230.11.41.commplex-link: P 
7421953:7430145(8192) ack 1 win 64240
06:39:35.506813 IP 10.230.11.41.commplex-link > 10.230.11.42.51543: . ack 
7430145 win 65535
06:39:37.477564 IP 10.230.11.42.51543 > 10.230.11.41.commplex-link: P 
7430145:7438337(8192) ack 1 win 64240
06:39:37.477601 IP 10.230.11.42.51543 > 10.230.11.41.commplex-link: P 
7438337:7446529(8192) ack 1 win 64240
06:39:37.477712 IP 10.230.11.41.commplex-link > 10.230.11.42.51543: . ack 
7446529 win 65535

[...]

06:39:37.505504 IP 10.230.11.42.51543 > 10.230.11.41.commplex-link: P 
8282113:8290305(8192) ack 1 win 64240
06:39:37.505526 IP 10.230.11.42.51543 > 10.230.11.41.commplex-link: P 
8290305:8298497(8192) ack 1 win 64240
06:39:37.505539 IP 10.230.11.41.commplex-link > 10.230.11.42.51543: . ack 
8298497 win 65535
06:39:39.463085 IP 10.230.11.42.51543 > 10.230.11.41.commplex-link: P 
8298497:8306689(8192) ack 1 win 64240
06:39:39.463117 IP 10.230.11.42.51543 > 10.230.11.41.commplex-link: P 
8306689:8314881(8192) ack 1 win 64240
06:39:39.463249 IP 10.230.11.41.commplex-link > 10.230.11.42.51543: . ack 
8314881 win 65535

Thanks
Matthias



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James Harper

2009-Aug-03 12:30 UTC

head link

RE: [Xen-users] Windows 2008 - slow upload

> 
> > Hi Tomek,
> >
> > Where are you uploading to? I have been having very similar issues
to> > you, however I''ve found that my issues are specific to
certain hosts
on> > my network.
> >
> > Do other DomU''s on the same host get the same issues?
> 
> Good tip. I could upload to another Win2k8 based VM on the same xen
> machine with normal speed, but when uploading to different physical
> server in the same network speed decreased.
> 
> Tell me more about your problem :)
> 
> Maybe it''s not optimal VLAN''s configuration.
It does sound like a failure of one of the offload functions... did you
say you disabled them in DomU or just in Dom0?

James

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Tomek

2009-Aug-03 13:12 UTC

head link

Re: [Xen-users] Windows 2008 - slow upload

-------- Original Message  --------
Subject: Re: [Xen-users] Windows 2008 - slow upload
From: James Harper <james.harper@bendigoit.com.au>
To: Tomek <timor@o2.pl>, xen-users@lists.xensource.com
Date: 03.08.2009 14:30
> to
> on
> 
> It does sound like a failure of one of the offload functions... did you
> say you disabled them in DomU or just in Dom0?
I''ve tested all cases.
DomU disabled, Dom0 enabled -> no change
DomU enabled, Dom0 disabled -> no change
DomU disabled, Dom0 disabled -> no change
DomU enabled, Dom0 enabled -> no change

-- 
Regards,
Thomas.

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Tomek

2009-Aug-03 15:33 UTC

head link

Re: [Xen-users] Windows 2008 - slow upload

-------- Original Message  --------
Subject: Re: [Xen-users] Windows 2008 - slow upload
From: James Harper <james.harper@bendigoit.com.au>
To: Tomek <timor@o2.pl>, xen-users@lists.xensource.com
Date: 03.08.2009 11:38
>> -------- Original Message  --------
>> Subject: Re: [Xen-users] Windows 2008 - slow upload
>> From: James Harper <james.harper@bendigoit.com.au>
>> To: Tomek <timor@o2.pl>, xen-users@lists.xensource.com
>> Date: 03.08.2009 11:03
>>
>>> Can you please try with vcpus=1 and see if that makes any
> difference.
>>> It''s not a solution but it would help me try and find
one...
>> I''ve changed vcpus to 1, and commented out cpus with no impact
on
>> networking. For now I have "Checksum Offload" and "Check
checksum on
> RX
>> packets" both disabled.
>>
> 
> I think I''ll need packet traces to get much further. Can you
reproduce
> using iperf? (it is available for both windows and linux). If you can,
> then I can send you the details of the wireshark and tcpdump filters
> I''ll need a capture from.
Yes, I can reproduce it with iperf - downloading (works like a charm):

iperf -c 192.168.x.1 -P 1 -i 1 -p 5001 -f K -t 10 -T 1 -S 0x04
------------------------------------------------------------
Client connecting to 192.168.x.1, TCP port 5001
TCP window size: 16.0 KByte (default)
------------------------------------------------------------
[  3] local 192.168.x.2 port 47419 connected with 192.168.x.1 port 5001
[ ID] Interval       Transfer     Bandwidth
[  3]  0.0- 1.0 sec  108240 KBytes  108240 KBytes/sec
[  3]  1.0- 2.0 sec  106032 KBytes  106032 KBytes/sec
[  3]  2.0- 3.0 sec  107056 KBytes  107056 KBytes/sec
[  3]  3.0- 4.0 sec  108064 KBytes  108064 KBytes/sec
[  3]  4.0- 5.0 sec  105320 KBytes  105320 KBytes/sec
[  3]  5.0- 6.0 sec  107120 KBytes  107120 KBytes/sec
[  3]  6.0- 7.0 sec  107192 KBytes  107192 KBytes/sec
[  3]  7.0- 8.0 sec  106368 KBytes  106368 KBytes/sec
[  3]  8.0- 9.0 sec  107352 KBytes  107352 KBytes/sec
[  3]  9.0-10.0 sec  106552 KBytes  106552 KBytes/sec
[  3]  0.0-10.0 sec  1069328 KBytes  106932 KBytes/sec

And uploading (wtf?):
iperf.exe -c 192.168.x.2 -P 1 -i 1 -p 5001 -f k -t 10
------------------------------------------------------------
Client connecting to 192.168.x.2, TCP port 5001
TCP window size: 8.00 KByte (default)
------------------------------------------------------------
[108] local 192.168.x.1 port 49314 connected with 192.168.x.2 port 5001
[ ID] Interval       Transfer     Bandwidth
[108]  0.0- 1.0 sec  80.0 KBytes   655 Kbits/sec
[108]  1.0- 2.0 sec  24.0 KBytes   197 Kbits/sec
[108]  2.0- 3.0 sec  24.0 KBytes   197 Kbits/sec
[108]  3.0- 4.0 sec  32.0 KBytes   262 Kbits/sec
[108]  4.0- 5.0 sec  24.0 KBytes   197 Kbits/sec
[108]  5.0- 6.0 sec  24.0 KBytes   197 Kbits/sec
[108]  6.0- 7.0 sec  24.0 KBytes   197 Kbits/sec
[108]  7.0- 8.0 sec  32.0 KBytes   262 Kbits/sec
[108]  8.0- 9.0 sec  24.0 KBytes   197 Kbits/sec
[108]  9.0-10.0 sec  24.0 KBytes   197 Kbits/sec
[108]  0.0-10.4 sec   320 KBytes   251 Kbits/sec

When I''m sniffing on Dom0 when uploading from Win2k8-DomU then packets 
are "flying" slower when downloading and all runs fluently without any
longer brakes.

Could you send me details for filters in wireshark/tcpdump?

I''ve tested same VLAN configuration from a linux-DomU and it runs 
normally - so it''s not broken VLAN configuration.

For now I''m downloading different versions of GPLPV drivers - maybe 
there is a regress in newest version...

-- 
Regards,
Thomas.

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James Harper

2009-Aug-03 23:50 UTC

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RE: [Xen-users] Windows 2008 - slow upload

> And uploading (wtf?):
> iperf.exe -c 192.168.x.2 -P 1 -i 1 -p 5001 -f k -t 10
> ------------------------------------------------------------
> Client connecting to 192.168.x.2, TCP port 5001
> TCP window size: 8.00 KByte (default)
> ------------------------------------------------------------
> [108] local 192.168.x.1 port 49314 connected with 192.168.x.2 port
5001> [ ID] Interval       Transfer     Bandwidth
> [108]  0.0- 1.0 sec  80.0 KBytes   655 Kbits/sec
> [108]  1.0- 2.0 sec  24.0 KBytes   197 Kbits/sec
> [108]  2.0- 3.0 sec  24.0 KBytes   197 Kbits/sec
> [108]  3.0- 4.0 sec  32.0 KBytes   262 Kbits/sec
> [108]  4.0- 5.0 sec  24.0 KBytes   197 Kbits/sec
> [108]  5.0- 6.0 sec  24.0 KBytes   197 Kbits/sec
> [108]  6.0- 7.0 sec  24.0 KBytes   197 Kbits/sec
> [108]  7.0- 8.0 sec  32.0 KBytes   262 Kbits/sec
> [108]  8.0- 9.0 sec  24.0 KBytes   197 Kbits/sec
> [108]  9.0-10.0 sec  24.0 KBytes   197 Kbits/sec
> [108]  0.0-10.4 sec   320 KBytes   251 Kbits/sec
Interesting. It actually seems pretty consistent. I was expecting
something a bit more up and down.
> 
> When I''m sniffing on Dom0 when uploading from Win2k8-DomU then
packets
> are "flying" slower when downloading and all runs fluently
without any
> longer brakes.
> 
> Could you send me details for filters in wireshark/tcpdump?
Basically just ''port 5001'' and make sure you capture the whole
packet
(-s0 under tcpdump). If you can start wireshark on DomU (or tshark or
whatever you are comfortable with), then tcpdump on Dom0 on the
interface that has the IP address (eg not the bridge) and then send me
the output. Maybe use ''-t3'' (3 second run) on iperf too as I
don''t think
10 seconds will tell me any more than 3 seconds does.
> I''ve tested same VLAN configuration from a linux-DomU and it runs
> normally - so it''s not broken VLAN configuration.
Okay. I could imagine some vlan problems if large send or checksum
offloading was involved but with those off it''s unlikely. You
aren''t
using jumbo frames are you?
> 
> For now I''m downloading different versions of GPLPV drivers -
maybe
> there is a regress in newest version...
That would be useful to know too.

Thanks

James

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"Robert Zöhrer | pronet.at"

2009-Aug-04 10:58 UTC

head link

Re: [Xen-users] Windows 2008 - slow upload

Tomek schrieb:
> The wrong thing after installing GPLPV drivers is decreased machine 
> upload. I could download about 40~60MB/s but upload runs at 10~20KB/s. 
> It''s to low for anything ;/
I''ve similar behavior with Win2003 SBS SP2 and installed GPLPV
0.10.0.86.

Uninstalling this GPLV version definitely "solves" the issue, but I 
can''t  say if it arrived after installing SP2 or maybe I installed
GPLPV
after SP2 .. didn''t remember anymore.

regards,
Robert


My HVM-config:
---------------------------------
import os, re
arch = os.uname()[4]
if re.search(''64'', arch):
     arch_libdir = ''lib64''
else:
     arch_libdir = ''lib''

kernel = "/usr/lib/xen/boot/hvmloader"
builder=''hvm''

# use 3 virt. cpus
vcpus = 3

# Use phys. CPU 1-3, reserving CPU0 for dom0
cpus = "1-3"

# max RAM used
memory = 2048

# Should be at least 2KB per MB of domain memory, plus a few MB per vcpu.
shadow_memory = 8
name = ''infra-win2003sbs''

# behavior
on_poweroff = ''destroy''
on_reboot   = ''restart''
on_crash    = ''restart''

## When using GPLPV driver instead of qemu
vif = [ ''bridge=eth2'' ]


# Use acpi
acpi = 1

disk = [ ''phy:/dev/drbd0,hda,w'' ]

device_model = ''/usr/'' + arch_libdir +
''/xen/bin/qemu-dm''

#-----------------------------------------------------------------------------
# boot on floppy (a), hard disk (c) or CD-ROM (d)
# default: hard disk, cd-rom, floppy

boot="c"

sdl=0

# VNC access
vnc=1
vnclisten = "0.0.0.0"
vncpasswd=''XXXXXXXXX''

# USB
usb = 1
usbdevice=''tablet''

serial=''pty''

#set time
localtime=1

# set keymap
keymap=''de''


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td1964

2009-Aug-04 11:54 UTC

head link

Re: [Xen-users] Windows 2008 - slow upload

Hi,

I have the same problem with Win2003 SBS SP2 and installed GPLPV 0.10.0.86.
GPLPV 0.9xx before hasn''t this problem, with "Checksum
Offload" enabled.
My config:
CentOS 5.3, XEN 3.4 (http://www.gitco.de/linux/x86_64/centos/)
------------------------
import os, re
arch = os.uname()[4]
if re.search(''64'', arch):
    arch_libdir = ''lib64''
else:
    arch_libdir = ''lib''
kernel = "/usr/lib/xen/boot/hvmloader"
builder=''hvm''
memory = 1536
vcpus=2
name = "xenhvm"
vif = [ ''mac=00:16:3E:0F:65:74, bridge=intern,
vifname=xenhvm01'' ]
#disk
[''phy:/dev/disk/by-path/ip-192.168.99.12:3260-iscsi-iqn.2008-11.de.123648ght:storage.vg02-xenhvm01,hda,w'']
disk = [''phy:/dev/drbd2,hda,w'']
#device_model = ''/usr/'' + arch_libdir +
''/xen/bin/qemu-dm''
device_model = ''/usr/'' + arch_libdir +
''/xen/bin/qemu-dm.drbd2''
boot="c"
sdl=0
vnc=1
vncviewer=0
vncdisplay=1
vncconsole=0
vncpasswd=''''
stdvga=0
serial=''pty''
localtime=1
usb=1
usbdevice=''tablet''
keymap=''de''

regards,
Tiemo





&quot;Robert Zöhrer | pronet.at&quot; wrote:> 
> Tomek schrieb:
> 
>> The wrong thing after installing GPLPV drivers is decreased machine 
>> upload. I could download about 40~60MB/s but upload runs at 10~20KB/s. 
>> It''s to low for anything ;/
> 
> I''ve similar behavior with Win2003 SBS SP2 and installed GPLPV
0.10.0.86.
> 
> Uninstalling this GPLV version definitely "solves" the issue, but
I
> can''t  say if it arrived after installing SP2 or maybe I installed
GPLPV
> after SP2 .. didn''t remember anymore.
> 
> regards,
> Robert
> 
> 
> My HVM-config:
> ---------------------------------
> import os, re
> arch = os.uname()[4]
> if re.search(''64'', arch):
>      arch_libdir = ''lib64''
> else:
>      arch_libdir = ''lib''
> 
> kernel = "/usr/lib/xen/boot/hvmloader"
> builder=''hvm''
> 
> # use 3 virt. cpus
> vcpus = 3
> 
> # Use phys. CPU 1-3, reserving CPU0 for dom0
> cpus = "1-3"
> 
> # max RAM used
> memory = 2048
> 
> # Should be at least 2KB per MB of domain memory, plus a few MB per vcpu.
> shadow_memory = 8
> name = ''infra-win2003sbs''
> 
> # behavior
> on_poweroff = ''destroy''
> on_reboot   = ''restart''
> on_crash    = ''restart''
> 
> ## When using GPLPV driver instead of qemu
> vif = [ ''bridge=eth2'' ]
> 
> 
> # Use acpi
> acpi = 1
> 
> disk = [ ''phy:/dev/drbd0,hda,w'' ]
> 
> device_model = ''/usr/'' + arch_libdir +
''/xen/bin/qemu-dm''
> 
>
#-----------------------------------------------------------------------------
> # boot on floppy (a), hard disk (c) or CD-ROM (d)
> # default: hard disk, cd-rom, floppy
> 
> boot="c"
> 
> sdl=0
> 
> # VNC access
> vnc=1
> vnclisten = "0.0.0.0"
> vncpasswd=''XXXXXXXXX''
> 
> # USB
> usb = 1
> usbdevice=''tablet''
> 
> serial=''pty''
> 
> #set time
> localtime=1
> 
> # set keymap
> keymap=''de''
> 
> 
> _______________________________________________
> Xen-users mailing list
> Xen-users@lists.xensource.com
> http://lists.xensource.com/xen-users
> 
> 
-- 
View this message in context:
http://www.nabble.com/Windows-2008---slow-upload-tp24786754p24807027.html
Sent from the Xen - User mailing list archive at Nabble.com.


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Tomek

2009-Aug-04 12:05 UTC

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Re: [Xen-users] Windows 2008 - slow upload

-------- Original Message  --------
Subject: Re: [Xen-users] Windows 2008 - slow upload
From: Robert Zöhrer | pronet.at <robert.zoehrer@pronet.at>
To: xen-users@lists.xensource.com
Date: 04.08.2009 12:58
> Tomek schrieb:
> 
> 
> I''ve similar behavior with Win2003 SBS SP2 and installed GPLPV
0.10.0.86.
> 
> Uninstalling this GPLV version definitely "solves" the issue, but
I
> can''t  say if it arrived after installing SP2 or maybe I installed
GPLPV
> after SP2 .. didn''t remember anymore.
Yes it solves problem... but without GPLPV you have only 100Mbit 
interface under DomU. Because I want to use this DomU as a file server 
(for about 100 users) I need 1Gbit if.

-- 
Regards,
Thomas.


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James Harper

2009-Aug-04 12:56 UTC

head link

RE: [Xen-users] Windows 2008 - slow upload

> > Tomek schrieb:
> >
> >
> > I''ve similar behavior with Win2003 SBS SP2 and installed
GPLPV
0.10.0.86.> >
> > Uninstalling this GPLV version definitely "solves" the
issue, but I
> > can''t  say if it arrived after installing SP2 or maybe I
installed
GPLPV> > after SP2 .. didn''t remember anymore.
> 
> Yes it solves problem... but without GPLPV you have only 100Mbit
> interface under DomU. Because I want to use this DomU as a file server
> (for about 100 users) I need 1Gbit if.
Don''t let the ''reported speed'' worry you too much.
GPLPV report 1Gbit
because that seemed like a reasonable thing to do. I could report 10Mbit
or 10Gbit to Windows and it wouldn''t change the actual speed of the
interface. I can get well over 2gbits/second between DomU and Dom0. I
might make the reported speed configurable just in case something does
use it for performance tuning somewhere... That said, all other things
being equal the PV drivers should be heaps faster than the qemu emulated
device.

We need to work out what is different between our setups because I just
can''t reproduce any of the problems you guys are reporting.

Just to get this info in one spot (sorry if I''m asking you to repeat
yourselves), please tell me the versions of:
GPLPV
Xen (hypervisor)
Dom0 Kernel
Dom0 kernel patch source if you aren''t running the standard 2.6.18
kernel that ships with Xen, eg a distro kernel perhaps?
Dom0 network module (eg e1000e)
Dom0 network card (just the make and chipset should be fine)
TX speed from DomU to Dom0 as measured with ''iperf -w1m''
(approx will be
fine)
TX speed from DomU to a physical machine on the other side of a 1GBit
interface from Dom0

Thanks

James


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"Robert Zöhrer | pronet.at"

2009-Aug-04 13:00 UTC

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Re: [Xen-users] Windows 2008 - slow upload

Tomek schrieb:
> Yes it solves problem... but without GPLPV you have only 100Mbit 
> interface under DomU. Because I want to use this DomU as a file server 
> (for about 100 users) I need 1Gbit if.
yes, "solve" is the wrong expression .. I want to use GPLPV too. Still
tried older driver versions (e.g. 0.10.0.69)? Same issue?

Robert

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Tomek

2009-Aug-04 13:15 UTC

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Re: [Xen-users] Windows 2008 - slow upload

-------- Original Message  --------
Subject: Re: [Xen-users] Windows 2008 - slow upload
From: James Harper <james.harper@bendigoit.com.au>
To: Tomek <timor@o2.pl>, xen-users@lists.xensource.com
Date: 04.08.2009 01:50
> Okay. I could imagine some vlan problems if large send or checksum
> offloading was involved but with those off it''s unlikely. You
aren''t
> using jumbo frames are you?
And that''s the point. After GPLPV installation large send data offload 
was enabled by default. I didn''t check it earlier or ignored it.
Ehhh dump thing.

Disabling it solves the problem.

Thanks for your time and tips which was most useful for me.

-- 
Regards,
Thomas.

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James Harper

2009-Aug-04 13:25 UTC

head link

RE: [Xen-users] Windows 2008 - slow upload

> 
> -------- Original Message  --------
> Subject: Re: [Xen-users] Windows 2008 - slow upload
> From: James Harper <james.harper@bendigoit.com.au>
> To: Tomek <timor@o2.pl>, xen-users@lists.xensource.com
> Date: 04.08.2009 01:50
> 
> > Okay. I could imagine some vlan problems if large send or checksum
> > offloading was involved but with those off it''s unlikely. You
aren''t
> > using jumbo frames are you?
> 
> And that''s the point. After GPLPV installation large send data
offload
> was enabled by default. I didn''t check it earlier or ignored it.
> Ehhh dump thing.
> 
> Disabling it solves the problem.
> 
> Thanks for your time and tips which was most useful for me.
> 
So you aren''t using Jumbo frames though? (I''ve never tested
with Jumbo
frames)

But Large Send was enabled in the DomU which was affecting
DomU->external traffic, but not DomU->DomX traffic right?

I''d still like to find what the root cause is (netback bug? GPLPV bug?
Physical Ethernet device driver bug?) but I''m glad it''s
working for you
now.

James

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"Robert Zöhrer | pronet.at"

2009-Aug-04 13:54 UTC

head link

Re: [Xen-users] Windows 2008 - slow upload

James Harper schrieb:
> Just to get this info in one spot (sorry if I''m asking you to
repeat
> yourselves), please tell me the versions of:
> GPLPV
0.10.0.86
> Xen (hypervisor)
> Dom0 Kernel
-----------------
host                   : greatmama-n2
release                : 2.6.26-2-xen-amd64
version                : #1 SMP Sun Jul 26 22:39:03 UTC 2009
machine                : x86_64
nr_cpus                : 4
nr_nodes               : 1
cores_per_socket       : 4
threads_per_core       : 1
cpu_mhz                : 2333
hw_caps                : 
bfebfbff:20000800:00000000:00000140:000ce3bd:00000000:00000001
total_memory           : 4093
free_memory            : 2083
node_to_cpu            : node0:0-3
xen_major              : 3
xen_minor              : 2
xen_extra              : -1
xen_caps               : xen-3.0-x86_64 xen-3.0-x86_32p hvm-3.0-x86_32 
hvm-3.0-x86_32p hvm-3.0-x86_64
xen_scheduler          : credit
xen_pagesize           : 4096
platform_params        : virt_start=0xffff800000000000
xen_changeset          : unavailable
cc_compiler            : gcc version 4.3.1 (Debian 4.3.1-2)
cc_compile_by          : waldi
cc_compile_domain      : debian.org
cc_compile_date        : Sat Jun 28 09:32:18 UTC 2008
xend_config_format     : 4
-----------------
> Dom0 kernel patch source if you aren''t running the standard 2.6.18
> kernel that ships with Xen, eg a distro kernel perhaps?
all plain debian lenny
> Dom0 network module (eg e1000e)
e1000e on eth0
bnx2 on eth2
> Dom0 network card (just the make and chipset should be fine)
eth0:

0e:00.0 Ethernet controller: Intel Corporation 82571EB Gigabit Ethernet 
Controller (rev 06)
         Subsystem: Hewlett-Packard Company NC360T PCI Express Dual Port 
Gigabit Server Adapter
         Flags: bus master, fast devsel, latency 0, IRQ 17
         Memory at fdfe0000 (32-bit, non-prefetchable) [size=128K]
         Memory at fdfc0000 (32-bit, non-prefetchable) [size=128K]
         I/O ports at 6000 [size=32]
         [virtual] Expansion ROM at d1100000 [disabled] [size=128K]
         Capabilities: [c8] Power Management version 2
         Capabilities: [d0] Message Signalled Interrupts: Mask- 64bit+ 
Queue=0/0 Enable-
         Capabilities: [e0] Express Endpoint, MSI 00
         Capabilities: [100] Advanced Error Reporting <?>
         Capabilities: [140] Device Serial Number 5c-f0-55-ff-ff-29-1f-00
         Kernel driver in use: e1000e
         Kernel modules: e1000e

eth2:

03:00.0 Ethernet controller: Broadcom Corporation NetXtreme II BCM5708 
Gigabit Ethernet (rev 12)
         Subsystem: Hewlett-Packard Company NC373i Integrated 
Multifunction Gigabit Server Adapter
         Flags: bus master, 66MHz, medium devsel, latency 64, IRQ 16 

         Memory at f8000000 (64-bit, non-prefetchable) [size=32M] 

         [virtual] Expansion ROM at d1300000 [disabled] [size=2K] 

         Capabilities: [40] PCI-X non-bridge device 

         Capabilities: [48] Power Management version 2 

         Capabilities: [50] Vital Product Data <?> 

         Capabilities: [58] Message Signalled Interrupts: Mask- 64bit+ 
Queue=0/0 Enable-
         Kernel driver in use: bnx2 

         Kernel modules: bnx2
> TX speed from DomU to Dom0 as measured with ''iperf -w1m''
(approx will be
> fine)
For now I only have output/speed of some (bacula) backup runs. Receiving 
bacula storage daemon resides in Dom0, the sending file-daemon in domU. 
I get a rate about 1.3 MB/s. Whithout GPLPV now I get rates about 6-7 MB/s.
> TX speed from DomU to a physical machine on the other side of a 1GBit
> interface from Dom0
At the moment I don''t have any phy machine in the same subnet. But
I''ve
measured filetransfer (smb) speed between the GPLPV server (TX) and 
another WinHVM on the same subnet: About poorly 65 kB/s. In the other 
direction I get rates about 2.5-3 MB/s (smb traffic). But the other HVM 
didn''t have GPLPV installed so the bottleneck here was quemu on the
peer.

Maybe I also should  play around with offloading.

regards,
Robert

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Tomek

2009-Aug-04 13:59 UTC

head link

Re: [Xen-users] Windows 2008 - slow upload

-------- Original Message  --------
Subject: Re: [Xen-users] Windows 2008 - slow upload
From: James Harper <james.harper@bendigoit.com.au>
To: Tomek <timor@o2.pl>
Date: 04.08.2009 15:25
> So you aren''t using Jumbo frames though? (I''ve never
tested with Jumbo
> frames)
No, I don''t use jambo frames.
> But Large Send was enabled in the DomU which was affecting
> DomU->external traffic, but not DomU->DomX traffic right?
Exactly. But I don''t test DomU->Dom0 or Dom0->DomU. Dom0 is in
different
network on different interface:
- eth0 - Dom0 management, etc.,
- eth1 - DomU''s interface with VLAN''s.
I used this HOWTO for VLAN''s configuration: 
http://renial.net/weblog/2007/02/27/xen-vlan/
> I''d still like to find what the root cause is (netback bug? GPLPV
bug?
> Physical Ethernet device driver bug?) but I''m glad it''s
working for you
> now.
Tell me what you need and I will give it to you. You had time for me so 
I''m obliged to find some for you.
> Just to get this info in one spot (sorry if I''m asking you to
repeat
> yourselves), please tell me the versions of:
> GPLPV
gplpv_fre_wlh_x86_0.10.0.69, gplpv_fre_wlh_x86_0.10.0.83 and 
gplpv_fre_wlh_x86_0.10.0.86 (I''ve tested on these three).

> Xen (hypervisor)
# xm info
host                   : xxx
release                : 2.6.26-2-xen-amd64
version                : #1 SMP Sun Jul 26 22:39:03 UTC 2009
machine                : x86_64
nr_cpus                : 4
nr_nodes               : 1
cores_per_socket       : 4
threads_per_core       : 1
cpu_mhz                : 2833
hw_caps                : 
bfebfbff:20100800:00000000:00000140:040ce3bd:00000000:00000001
total_memory           : 10237
free_memory            : 252
node_to_cpu            : node0:0-3
xen_major              : 3
xen_minor              : 2
xen_extra              : -1
xen_caps               : xen-3.0-x86_64 xen-3.0-x86_32p hvm-3.0-x86_32 
hvm-3.0-x86_32p hvm-3.0-x86_64
xen_scheduler          : credit
xen_pagesize           : 4096
platform_params        : virt_start=0xffff800000000000
xen_changeset          : unavailable
cc_compiler            : gcc version 4.3.1 (Debian 4.3.1-2)
cc_compile_by          : waldi
cc_compile_domain      : debian.org
cc_compile_date        : Sat Jun 28 09:32:18 UTC 2008
xend_config_format     : 4

> Dom0 Kernel
> Dom0 kernel patch source if you aren''t running the standard 2.6.18
> kernel that ships with Xen, eg a distro kernel perhaps?
# uname -a
Linux xxx 2.6.26-2-xen-amd64 #1 SMP Sun Jul 26 22:39:03 UTC 2009 x86_64 
GNU/Linux
> Dom0 network module (eg e1000e)
bnx2
> Dom0 network card (just the make and chipset should be fine)
Ethernet controller: Broadcom Corporation NetXtreme II BCM5708 Gigabit 
Ethernet (rev 12)
> TX speed from DomU to Dom0 as measured with ''iperf -w1m''
(approx will be
> fine)It could be quite hard in my current configuration.
> TX speed from DomU to a physical machine on the other side of a 1GBit
> interface from Dom0With large data offload enabled/disabled or both?

-- 
Regards,
Thomas.

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"Robert Zöhrer | pronet.at"

2009-Aug-04 14:22 UTC

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Re: [Xen-users] Windows 2008 - slow upload

Robert Zöhrer | pronet.at schrieb:
> bnx2 on eth2
Forgotten: DomUs are connected to eth2

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Andrew Lyon

2009-Aug-04 15:38 UTC

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Re: [Xen-users] Windows 2008 - slow upload

>
> I''d still like to find what the root cause is (netback bug? GPLPV
bug?
> Physical Ethernet device driver bug?) but I''m glad it''s
working for you
> now.
>
> James
>
> _______________________________________________
> Xen-users mailing list
> Xen-users@lists.xensource.com
> http://lists.xensource.com/xen-users
>
James,

On my test system I also have to disable large send offload otherwise
uploads are very slow, but on my main Xen system it is enabled in all
domU''s and seems to cause no problems.

I suspect there are some bugs which are triggered by interactions
between different kernel/nic driver/gplpv versions, the problems we
discussed with 2.6.30 do not go away completely after toggling receive
offload, but the errors are much less frequent and throughput is much
better.

Quite why toggling receive offload off and on again would help I don''t
know, but it does.

A similar system using e1000e driver does not suffer from the same
problem, but I''ve tried different versions of the igb driver and they
all seem to be affected.

opensuse have selected 2.6.31 as their next official distro kernel, I
plan to rebase the patches as soon as it is available and dedicate
some time to testing and working out the networking bugs.

Andy

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James Harper

2009-Aug-04 23:38 UTC

head link

RE: [Xen-users] Windows 2008 - slow upload

> release                : 2.6.26-2-xen-amd64
Hmmm... same version as some other reports
> 
> Maybe I also should  play around with offloading.
> 
For a start, disable checksum and large send offload in domU (properties of xen
network adapter)

James

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James Harper

2009-Aug-05 12:35 UTC

head link

RE: [Xen-users] Windows 2008 - slow upload

Please try disabling "large send offload" in the adapter properties
under windows.

Please let me know if that does or doesn't work.

Thanks

James

> -----Original Message-----
> From: xen-users-bounces@lists.xensource.com [mailto:xen-users-
> bounces@lists.xensource.com] On Behalf Of td1964
> Sent: Tuesday, 4 August 2009 21:54
> To: xen-users@lists.xensource.com
> Subject: Re: [Xen-users] Windows 2008 - slow upload
> 
> 
> Hi,
> 
> I have the same problem with Win2003 SBS SP2 and installed GPLPV 0.10.0.86.
> GPLPV 0.9xx before hasn't this problem, with "Checksum
Offload" enabled.
> My config:
> CentOS 5.3, XEN 3.4 (http://www.gitco.de/linux/x86_64/centos/)
> ------------------------
> import os, re
> arch = os.uname()[4]
> if re.search('64', arch):
>     arch_libdir = 'lib64'
> else:
>     arch_libdir = 'lib'
> kernel = "/usr/lib/xen/boot/hvmloader"
> builder='hvm'
> memory = 1536
> vcpus=2
> name = "xenhvm"
> vif = [ 'mac=00:16:3E:0F:65:74, bridge=intern, vifname=xenhvm01' ]
> #disk >
['phy:/dev/disk/by-path/ip-192.168.99.12:3260-iscsi-iqn.2008-
> 11.de.123648ght:storage.vg02-xenhvm01,hda,w']
> disk = ['phy:/dev/drbd2,hda,w']
> #device_model = '/usr/' + arch_libdir + '/xen/bin/qemu-dm'
> device_model = '/usr/' + arch_libdir +
'/xen/bin/qemu-dm.drbd2'
> boot="c"
> sdl=0
> vnc=1
> vncviewer=0
> vncdisplay=1
> vncconsole=0
> vncpasswd=''
> stdvga=0
> serial='pty'
> localtime=1
> usb=1
> usbdevice='tablet'
> keymap='de'
> 
> regards,
> Tiemo
> 
> 
> 
> 
> 
> &quot;Robert Zöhrer | pronet.at&quot; wrote:
> >
> > Tomek schrieb:
> >
> >> The wrong thing after installing GPLPV drivers is decreased
machine
> >> upload. I could download about 40~60MB/s but upload runs at
10~20KB/s.
> >> It's to low for anything ;/
> >
> > I've similar behavior with Win2003 SBS SP2 and installed GPLPV
0.10.0.86.
> >
> > Uninstalling this GPLV version definitely "solves" the
issue, but I
> > can't  say if it arrived after installing SP2 or maybe I installed
GPLPV
> > after SP2 .. didn't remember anymore.
> >
> > regards,
> > Robert
> >
> >
> > My HVM-config:
> > ---------------------------------
> > import os, re
> > arch = os.uname()[4]
> > if re.search('64', arch):
> >      arch_libdir = 'lib64'
> > else:
> >      arch_libdir = 'lib'
> >
> > kernel = "/usr/lib/xen/boot/hvmloader"
> > builder='hvm'
> >
> > # use 3 virt. cpus
> > vcpus = 3
> >
> > # Use phys. CPU 1-3, reserving CPU0 for dom0
> > cpus = "1-3"
> >
> > # max RAM used
> > memory = 2048
> >
> > # Should be at least 2KB per MB of domain memory, plus a few MB per
vcpu.
> > shadow_memory = 8
> > name = 'infra-win2003sbs'
> >
> > # behavior
> > on_poweroff = 'destroy'
> > on_reboot   = 'restart'
> > on_crash    = 'restart'
> >
> > ## When using GPLPV driver instead of qemu
> > vif = [ 'bridge=eth2' ]
> >
> >
> > # Use acpi
> > acpi = 1
> >
> > disk = [ 'phy:/dev/drbd0,hda,w' ]
> >
> > device_model = '/usr/' + arch_libdir +
'/xen/bin/qemu-dm'
> >
> >
#---------------------------------------------------------------------------
> --
> > # boot on floppy (a), hard disk (c) or CD-ROM (d)
> > # default: hard disk, cd-rom, floppy
> >
> > boot="c"
> >
> > sdl=0
> >
> > # VNC access
> > vnc=1
> > vnclisten = "0.0.0.0"
> > vncpasswd='XXXXXXXXX'
> >
> > # USB
> > usb = 1
> > usbdevice='tablet'
> >
> > serial='pty'
> >
> > #set time
> > localtime=1
> >
> > # set keymap
> > keymap='de'
> >
> >
> > _______________________________________________
> > Xen-users mailing list
> > Xen-users@lists.xensource.com
> > http://lists.xensource.com/xen-users
> >
> >
> 
> --
> View this message in context: http://www.nabble.com/Windows-2008---slow-
> upload-tp24786754p24807027.html
> Sent from the Xen - User mailing list archive at Nabble.com.
> 
> 
> _______________________________________________
> Xen-users mailing list
> Xen-users@lists.xensource.com
> http://lists.xensource.com/xen-users
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Xen users - Aug 2009 - Windows 2008 - slow upload

[Xen-users] Windows 2008 - slow upload

RE: [Xen-users] Windows 2008 - slow upload

Re: [Xen-users] Windows 2008 - slow upload

Re: [Xen-users] Windows 2008 - slow upload

RE: [Xen-users] Windows 2008 - slow upload

Re: [Xen-users] Windows 2008 - slow upload

Re: [Xen-users] Windows 2008 - slow upload

RE: [Xen-users] Windows 2008 - slow upload

Re: [Xen-users] Windows 2008 - slow upload

Re: [Xen-users] Windows 2008 - slow upload

RE: [Xen-users] Windows 2008 - slow upload

Re: [Xen-users] Windows 2008 - slow upload

Re: [Xen-users] Windows 2008 - slow upload

Re: [Xen-users] Windows 2008 - slow upload

RE: [Xen-users] Windows 2008 - slow upload

Re: [Xen-users] Windows 2008 - slow upload

Re: [Xen-users] Windows 2008 - slow upload

RE: [Xen-users] Windows 2008 - slow upload

Re: [Xen-users] Windows 2008 - slow upload

Re: [Xen-users] Windows 2008 - slow upload

Re: [Xen-users] Windows 2008 - slow upload

Re: [Xen-users] Windows 2008 - slow upload

RE: [Xen-users] Windows 2008 - slow upload

RE: [Xen-users] Windows 2008 - slow upload