On Thu, 20 Nov 2003, chas williams wrote: > >How involved is the current RX in the raw IO performance gap (AFS vs. NFS, > >FTP et. all) people bring up? > > i believe rx is the problem but more precisely how rx is used the > problem. we (nrl) had some work done to put atm into afs. rx datagrams > were sent directly over an atm vc. atm pdu's are more like udp than > tcp but that's probably not were the gains were seen. the 'segment' > size for rx was increased. this created a 'new' type of jumbogram > that wasnt a bunch of little rx datagrams packaged together (like 'regular' > jumbograms). regular jumbograms are typically handled via scatter/gather > which (IMHO) isnt well implemented on many operating systems.
i could certainly buy this being an "easy" upgrade to get some more performance out of afs, but i don't necessarily buy it being the ultimate answer. _______________________________________________ OpenAFS-devel mailing list [EMAIL PROTECTED] https://lists.openafs.org/mailman/listinfo/openafs-devel
