On Wed, 6 Sep 2000, Marcus Smiley wrote:
The performance is ~ 10 MB/s, no matter what.
Not much to say here... plugged everything in (even borrowed a couple of old Sun SSA FC-AL cables instead of "real" 1000base-SX), and this is what I get with a dd write (reads were slightly faster, but I didn't keep the sysstat output):
slot 8: Gigabit Ethernet Controller II e8 MAC Address: 00:90:27:fc:50:48 (auto-1000sx-fd-up) Revision: 3
CPU NFS CIFS HTTP Net kB/s Disk kB/s Tape kB/s Cache in out read write read write age 100% 591 0 0 19935 119 132 20616 0 0 >60 100% 563 0 0 18997 114 68 21454 0 0 >60 100% 542 0 0 18306 110 44 23415 0 0 >60 100% 600 0 0 20263 121 78 19563 0 0 >60 [...]
Client is a 4x450-MHz E420R, Solaris 2.6. Filer is an F740 (7x36GB drives) with the Intel Gigabit II NIC in slot 8. Checksum offloading gave a 5% increase, if that. Adding seven more drives didn't improve the throughput, as I had hoped. NFSv3 over UDP, 32K read/write block sizes. No tuning done on the Solaris side. Both were plugged into the gigabit uplink ports on a Cisco Catalyst 3548.