Oh..That's even better. We got a max of 8 mbytes/sec. Never more than that. Interestingly, we get the same throughput between any sun boxes as well...

prem

-----Original Message----- From: Marcus Smiley [mailto:marcus.smiley@ericsson.com] Sent: Wednesday, September 06, 2000 2:41 PM To: toasters@mathworks.com Subject: gigabit ethernet performance

Does anyone have any benchmarks/suggestions for poor performace with gigabit ethernet between Sun enterprise 220R and NetApp 740 with Intel GBII card? I have an open ticket w/Netapp and it's been open forever. These machines are directly attached (private network), and I've tried a mkfile and copying that file back during the day and at night (no load) and it makes no difference.

The performance is ~ 10 MB/s, no matter what.

The Sun is running Solaris 8, with latest GB Ethernet 3.0 drivers and patches. Also, the Sun box's only function is Legato server, so I've even stopped all nsr daemons while the test copy/mkfile is in progress, & it makes no difference.

I've tried NFSv2 vs. NFSv3, with 32k size packets and 8k size packets. I've tried tcp and udp, with the same results.

The /etc/system file on the E220R looks like this, for the ge adapter:

* Increase size of STREAMS syncronized queues to increase network * performance. Release notes for qfe card recommends setting this * to 25 per 64Mbytes of RAM in the system. It also prevents * receive overrun on the GbE interface. msmiley 7/20/00

set sq_max_size=775 set ge:ge_adv_1000autoneg_cap=0 set ge:ge_adv_1000fdx_cap=1 set ge:ge_adv_pauseTX=1

Also, I've set tcp/udp specific stuff per the Netapp tech suppt. folks:

ndd -set /dev/udp udp_recv_hiwat 65535 ndd -set /dev/udp udp_xmit_hiwat 65535 ndd -set /dev/tcp tcp_recv_hiwat 65535 ndd -set /dev/tcp tcp_xmit_hiwat 65535

The netapp is a 740 (5.3.6R1P1) with over 100GB of free space available on the volume I'm copying to/from.

Interestingly enough, I have done a packet trace (pktt) on the GBII card and it looks OK. Also, the throughput from my 100BaseT card to the netapp (thru a catalyst 5500) does ~ 7.5 MB/s.

*Any* input here would be much appreciated.

-Marc

Marcus Smiley | Ericsson Wireless Communications, Inc. Unix Sys Admin | 6210 Spine Rd. Boulder, CO 80301 | Ph (303) 473-6903