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xen-users
Re: [Xen-users] GPLPV drivers problem
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%
On Jan 6, 2009, at 2:22 PM, dil wrote:
James Harper <james.harper <at> bendigoit.com.au> writes:
I haven't tested with XP in a little while. Make sure you _disable_
the
firewall _service_ on the XP DomU (it is not sufficient to just
disable
the firewall in network config - the firewall service itself has to
be
disabled). That may just be an sp2 thing... I'm not sure if it is
required with sp2 but it is something that you can verify easily.
If
you
need the firewall service enabled, let me know and we'll see if we
can
figure something else out.
Do you have a copy of 2003 (must be sp2) you can test with to draw
some
comparisons?
James
Thank you, after disabling the firewall service i can get 250 Mb/s .
the cpu on the domU is still high
( win xp reports 100% usage during the transfers )
i do not have a copy of win2003 so i can not test it.
Where are you testing from and too?
James
I run iperf as a client on the domu and as a server on the dom0.
i also tried an ftp transfer ( ftp server on the dom0) ( lvm lv as
volumes to
get better disk performances )
the transfer rate was 140Mb/s max ( second run ) but the cpu was
100% loaded (
60% for ftp.exe and 30 % system )
it seems that the high cpu load during network utilization is the
main limiting
factor.
i disabled ms/qos with no luck
I guess this is my problem as well, i'll try copying windows again
later tonight.
Luís
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