[openib-general] Re: Re: [PATCH] IPoIB splitting CQ, increase both send/recv poll NUM_WC & interval

[Shirley Ma]

"Michael S. Tsirkin" <mst at mellanox.co.il> wrote on 04/25/2006 08:23:12 AM:

> Quoting r. Shirley Ma <xma at us.ibm.com>:
> > The more light weigh in hardware interrupts, the better.
> 
> But we don't know whether the ULP will be doing lightweigh things 
incompletion
> handler or not.
> 
> So it seems better to report completion events in IRQ context from low 
level
> driver and leave the decision on whether to use tasklet, work queue or 
polling
> like NAPI to the ULPs. No?
> 
> -- 
> MST

Yes. That's I am working on right now. The first patch will use work queue 
in IPoIB 
layer not driver layer to see the perfomance number with both send/recv 
polling 
handler simultanously on mthca.

Thanks
Shirley Ma
IBM Linux Technology Center
15300 SW Koll Parkway
Beaverton, OR 97006-6063
Phone(Fax): (503) 578-7638



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