[openib-general] Re: IBM utilizing and testing openIB release 1 RCx

[Michael S. Tsirkin]

Quoting r. Kevin Reilly <kjreilly at us.ibm.com>:
>   The biggest problem we have at the moment is being able to tune the
> IPoverIB drivers  sendq_size and recvq_size.  We simply
> can get IP to work without tuning these parameters in some situations.  For
> example, running our cluster filesystem file server over
> IPoverIB.  The server that is a filesystem server needs to have many socket
> connections open and we use a big 8 or 16 way server
> for this purpose. We very quickly overrun the IPoverIB drivers send and
> receive queue. We are submitting a patch so we can tune
> these because we couldn't get things to work with the defaults and not way
> to tune.

Which queue sizes do you use?
Maybe we can just have everyone use the bigger values and be done with it.

-- 
Michael S. Tsirkin
Staff Engineer, Mellanox Technologies