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

2014-11-19 Thread Ernest Beinrohr
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
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Re: [ovirt-users] disabling generic-receive-offload (gro) and large-receive-offload ?

2014-11-19 Thread 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-boun...@ovirt.org [users-boun...@ovirt.org] im Auftrag von Ernest 
Beinrohr [ernest.beinr...@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
Inghttp://www.beinrohr.sk/ing.php, RHCEhttp://www.beinrohr.sk/rhce.php, 
RHCVAhttp://www.beinrohr.sk/rhce.php, LPIChttp://www.beinrohr.sk/lpic.php, 
VCAhttp://www.beinrohr.sk/vca.php,
+421-2-62410360 +421-903-482603


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