[openib-general] Re: BUG ipoib oops in iptables/netfilter

[Michael S. Tsirkin]

Quoting r. Grant Grundler <iod00d at hp.com>:
> FWIW, default IPoIB perf is pathetic: ~1.5-1.6Gb/s
> with the above netperf command line.

I think these systems have IOMMU, do they not?
If so, could the fact that IPoIB calls dma_map_single for each
packet be the reason it is slow? Maybe dma_map_single is slow?

-- 
MST - Michael S. Tsirkin