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xen-users
Re: [Xen-users] GPLPV drivers problem
On Jan 7, 2009, at 11:42 AM, Luís Fernandes wrote:
On Jan 6, 2009, at 11:31 AM, James Harper wrote:
What OS are you using? If it's 2003 then make sure sp2 is
installed.
I'm using windows XP SP2 (sp2 on purpose).
I have a Intel Core2 duo 2133mhz, 4mb cache with VT-X enabled.
I have the firewall disabled, but you said in another mail to
disable
the service. I did and it boosted performance to 100mbits. Still
slow
though :/
Switching to the 'Standard PC' hal is easy enough. Switching back
is
a bit of a pain but you could just try it on an lvm snapshot.
should I be using the standard pc configuration or the acpi one?
Try the Standard PC one and just give XP one CPU (I think you were
already?). I hope to have a way shortly to fix ACPI problems under
XP and 2003 (<sp2 - sp2 includes the fix already) but initially
only for AMD processors.
James
I've been trying to switch to a standard pc hal, but windows just
keeps getting destroyed. I've tryed the normal "update driver"
process but it won't accept the new driver (somehow?) and revert
always back to acpi multiprocessor.
So after completely destroying my windows setup, I copied windows
again from the other partition and tried again. It didn't work. So I
thought I could install SP3 to see if windows xp worked better.....
it was installing it for the whole night, 12 hours later I didn't
knew where it was and people at work needed to start to work so I
had to stop the update.
Now I had somesort of hybrid that crashes randomly... nevertheless I
tried the /hal=xxx trick but the only thing it did was to delete
hal.dll and complaint it doesn't have it anymore. So I put it there
again and it complaints again that it doesn't exist....
In another post you said to turn off checksum and large send
offloading .. I tried that but the performance lowered from 100mbits
to 40 again. enabling those two upped the performance to 100mbits
again.
again, windows xp (sp2?) and intel core 2 duo with only 1 processor
for the machine (but with the acpi multiprocessor kernel ....) and
my kernel times are still almost at 100%
I've managed to put the drivers running smoothly in windows xp sp2. It
was the ACPI Multiprocessor HAL that was causing the problem.
However, to revert to it I had to do another step:
1- rebooted without GPL PV drivers (with the /nogplpv switch now)
2- after that, I selected update driver, choose, and selected Advanced
Configuration and Power Interface (ACPI) PC
3- it asked me to reboot, after reboot I entered without the GPL PV
drivers
4- now it detects a new HAL and installs it, reboot again
5- I can now enter with the gpl pv drivers again
the drivers were automatically recognized and installed (they were
already installed), and now I get 1.05gbits of transfer rate with
iperf to another virtual host. Hard drive performance goes to 50mb/s
read speed (previous was 25mb/s)
iperf to another host in the network gives me +/- 300mb/s ~ 350mb/s
(in a linux machine it goes only to 500mbits/s, but that's because we
have rubbish switches)
thanks for all your help!
Luís
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