Well the time has come where I have finally got some hardware that can max out gig ethernet. I sent 3.4 tb in 9 hours! Thats awesome! GG Cisco 3750 and 2 x Sun x4500 Thumpers running Opensolaris snv_105. Good times - I bet the copper was warm 🙂
root@dumper1:sbin> ./zfsMbufferInitialSend.sh
Starting ZFS send to dumper-tmp.ansto.gov.au @ Fri Mar 6 16:02:47 EST 2009
in @ 0.0 kB/s, out @ 34.9 MB/s, 3428 GB total, buffer  0% fullll
summary: 3428 GByte in 8 h 57 min 109 MB/s
real   537m40.533s
user   34m32.281s
sys    326m18.227s
Completed @ Sat Mar 7 01:00:34 EST 2009
If you do use x4500s or have the need to zfs send compile mbuffer today! It rocks - I went from 30mbyte a second with SSH to maxing out Gigabit Ethernet. I will post instructions on everything I did soon.