Hi again.
After fiddling with pf and trying to statistically determine the cause
of the problem I did another search on the net and found this thread
[1].
Here the author suggests:
"when this slow problem occurs, you must disable the checksum on the
physical and virtual cards and restart the xenserver."
Does anyone know what exactly is meant by that?
I then searched in the CVS log of xnf development [2] and found this
statement:
"Emulated em(4) or re(4) drivers will
take over if xnf(4) driver is disabled or not compiled in."
This gave me the idea to disable xnf in the kernel, for now just
temporarily upon boot, for example like this [3]:
----
boot> boot bsd -c
...
ukc> disable xnf
----
As a result the booted systems now finds the `vio`
=== Case 6: Client <= VPN = Server <= WAN (vio)
* From client download external file from WAN via VPN tunnel with Virtio
driver
* Testresult:
----
→ curl http://fra36-speedtest-1.tele2.net/100MB.zip > /dev/null
% Total % Received % Xferd Average Speed Time Time Time
Current
Dload Upload Total Spent Left
Speed
100 100M 100 100M 0 0 2226k 0 0:00:46 0:00:46 --:--:--
4041k
----
If I'm not mistaken this gives reason to believe that there is an issue
with the xnf driver. I will mostly likely contact the xnf developer
about
this. In the best case xnf can be fixed and the download performance be
improved.
Thank you all for your help and feedback.
Berry
____
[1] http://daemonforums.org/showthread.php?p=61158
[2] https://cvsweb.openbsd.org/cgi-bin/cvsweb/src/sys/dev/pv/if_xnf.c
[3] https://man.openbsd.org/config - Xen based VPS / OpenBSD 6.2 / OpenVPN 2.4.4 => Slow d... Berry Wendermouth
- Re: Xen based VPS / OpenBSD 6.2 / OpenVPN 2.4.4 =&g... Kirill Miazine
- Re: Xen based VPS / OpenBSD 6.2 / OpenVPN 2.4.4... Berry Wendermouth
- Re: Xen based VPS / OpenBSD 6.2 / OpenVPN 2.4.4 =&g... Chris Cappuccio
- Re: Xen based VPS / OpenBSD 6.2 / OpenVPN 2.4.4... Berry Wendermouth
- Re: Xen based VPS / OpenBSD 6.2 / OpenVPN 2... Berry Wendermouth
- Re: Xen based VPS / OpenBSD 6.2 / OpenV... Berry Wendermouth
- Re: Xen based VPS / OpenBSD 6.2 / ... Berry Wendermouth
