[ovirt-users] disabling generic-receive-offload (gro) and large-receive-offload ?

[Markus Stockhausen]

Hi Ernest,

we have similar issues with IPoIB. To fix it we use VDSM hooks:

# cat /usr/libexec/vdsm/hooks/before_vdsm_start/network.sh
...
ethtool -K ib0 tso off 2>/dev/null
ethtool -K ib1 tso off 2>/dev/null
...

Nevertheless this is similar to running self defined init scripts.
But at least I have a well defined location to put those fixes into.

Best regards.

Markus

________________________________
Von: users-bounces at ovirt.org [users-bounces at ovirt.org]" im Auftrag von "Ernest Beinrohr [Ernest.Beinrohr at axonpro.sk]
Gesendet: Mittwoch, 19. November 2014 13:27
An: users
Betreff: [ovirt-users] disabling generic-receive-offload (gro) and large-receive-offload ?

Hi, is there a way of setting eth parameters for hypervisors? My freebsd instance has terrible performance when these are enabled. Currently I run these on all hypervisors manually.


ethtool –K vnet0 gro off
ethtool –K vnet2 gro off
ethtool –K vnet0 lro off
ethtool –K vnet2 lro off

as per: http://support.citrix.com/proddocs/topic/netscaler-vpx-10-5/ns-vpx-install-prereqkvm-ref.html

--
Ernest Beinrohr, AXON PRO
Ing<http://www.beinrohr.sk/ing.php>, RHCE<http://www.beinrohr.sk/rhce.php>, RHCVA<http://www.beinrohr.sk/rhce.php>, LPIC<http://www.beinrohr.sk/lpic.php>, VCA<http://www.beinrohr.sk/vca.php>,
+421-2-62410360 +421-903-482603

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.ovirt.org/pipermail/users/attachments/20141119/b28cbecd/attachment-0001.html>
-------------- next part --------------
An embedded and charset-unspecified text was scrubbed...
Name: InterScan_Disclaimer.txt
URL: <http://lists.ovirt.org/pipermail/users/attachments/20141119/b28cbecd/attachment-0001.txt>