[ewg] Re: [ofa-general] [PATCH 14/16] ib/ipoib: Support modifying IPOIB CQ moderation params

[Eli Cohen]

On Sun, 2008-01-20 at 14:33 +0200, Or Gerlitz wrote:
> Eli Cohen wrote:
> > Support modifying IPOIB CQ moderation params
> > This can be used to tune at run time the paramters controlling
> > the event (interrupt) generation rate and thus reduce the overhead
> > incurred by handling interrupts resulting in better throughput.
> 
> Eli,
> 
> I did some testing with the copy of the patch present in OFED 1.3-rc1, 
> over a {RH5 (Tikanga) , ethtool-5-1.el5 , initscripts-8.45.14.EL-1} 
> system. I wanted to have a persistent configuration, were for that end I 
> have added the following line to the network script:
> 
> ETHTOOL_OPTS="adaptive-rx on rx-usecs 2 rx-frames 3"
> 
> it does not seem to work, when doing ifup some error is printed etc, do 
> you manage to have it working fine? the problem does not seem to be 
> related to ipoib as the same error is printed also for ethernet devices.
> 
> Or.
> 
> 
I did not use ethtool through these scripts. Did it work for you on
other distributions or have you not tried that? And did actual
configuration took place (did rx-usecs become 2 and rx-frames 3)?