> Hmm... wonder what it would take to be able to sniff on a > PCI bus:)
Hardware assistance, but we've used, here at NetApp, a PCI analyzer that consisted of, I think, a peripheral you plug into a PC, plus software for Windows. (I suspect the stuff that needs to be done Really Fast with Really Low Latency is done by the hardware.) We also have Fibre Channel analyzers and, I think, parallel SCSI analyzers as well. Those presumably had specialized hardware. (Maybe I should go look at the Infiniband specs we have here and see whether there's any sort of promiscuous Infiniband sniffing possible, although I think Infiniband is switched so you might have to do some Special Stuff to sniff traffic - and it probably requires hardware assistance to buffer records for bus transactions for the software to read.)
