Roch schrieb: > Thomas, for long latency fat links, it should be quite > beneficial to set the socket buffer on the receive side > (instead of having users tune tcp_recv_hiwat). > > throughput of a tcp connnection is gated by > "receive socket buffer / round trip time". > > Could that be Ross' problem ? > > -r > >
Hmm, I'm not a TCP expert, but that sounds absolutely possible, if Solaris 10 isn't tuning the TCP buffer automatically. The default receive buffer seems to be 48k (at least on a V240 running 118833-33). So if the block size is something like 128k it would absolutely make sense to tune the receive buffer to lower the rund trip time... Ross: Would you like a patch to test if this is the case? Which version of mbuffer are you currently using? - Thomas _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
