On 28 Feb 2011, at 18:32, Harald Barth <h...@kth.se> wrote: > >> (fragmented packets are actually more efficient in our RX >> implementation than having to process more single packets) > > Are there actual numbers from this century to validate this > theory? If yes, I would be interrested to see those.
I don't have any numbers in front of me right now, but I did verify this at the end of last year. On a network that passes them, raw rx connections using jumbograms are almost 4 times faster than those without. You can verify this yourself using the rxperf tool. When you are using RX to carry AFS RPCs, some of this performance difference is hidden, but jumbograms remain substantially faster. There are a few reasons for this - producing packets for transmission is expensive, as is handling ACKs for those packets. Jumbograms reduces both of these costs. I've been doing work for YFS on improving RX performance which is starting to narrow this gap. Cheers, Simon_______________________________________________ OpenAFS-info mailing list OpenAFS-info@openafs.org https://lists.openafs.org/mailman/listinfo/openafs-info
