Hi
I think there is something wrong on your system.
I have Windows 2003 Server installed and I get much better results even
without any PV drivers...
See the attachment and my previous mail below....
Regards,
Steffen
-----------------------------
Hi
Something I found testing the lastest gplpv drivers just got my attention
again:
Without gplpv drivers, disk throughput is at 27mb/s (r+w).
With gplpv drivers, it reaches 56/45mb/s (r/w).
No surprise, I expected gplpv to be faster than qemu.
These values were measured using PassMark Performance Test 6.0.
What surprises me is the "Disk - Zufallssuche + LS" result:
Witout gplpv it reaches 31mb/s while gplpv drivers only reach 5mb/s.
I've attached the result.
Can someone explain this?
Regards,
Steffen
-----Ursprüngliche Nachricht-----
Von: xen-users-bounces@xxxxxxxxxxxxxxxxxxx
[mailto:xen-users-bounces@xxxxxxxxxxxxxxxxxxx] Im Auftrag von Sebastian
Reitenbach
Gesendet: Montag, 22. September 2008 11:19
An: xen-users@xxxxxxxxxxxxxxxxxxx
Betreff: [Xen-users] performance of pv drivers for windows
Hello everybody,
I tried to measure the performance of the available drivers for windows as a
HVM guest.
I used the gplpv drivers 0.9.11-pre17, the PV drivers from Novell, and the
drivers
from Citrix XenSource with the XenServer 5.
The Novell and gplpv drivers were more or less at the same speed, for both,
network and disk performance.
The disk performance was about 10MB/s reading and writing sequentially, and
about 1-1.5MB/s for reading and writing randomly.
The network speed was about 10-12MB/s, via a GigaBit line.
The Xensource drivers made at least about 30MB/s reading and writing
sequentially, but for reading and writing randomly, it was also only lousy
1.5MB/s.
Via network, over the GigaBit line, with the xensource drivers, the speed
was
about 78 MB/s.
The Windows system was a XP SP2.
hdparm on the dom0 gives about 60MB/s.
The network test was an ftp transfer, just downloading a 500MB file, without
writing it to disk, writing to nul. The same in the dom0, writing the file
to /dev/null gave me 112MB/s.
So I am wondering, what are the expected speed gains for the gplpv drivers?
Is the performance of the drivers bettter with different windows versions,
e.g. windows server 2003?
kind regards
Sebastian
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