| Title: | FDDI - The Next Generation |
| Moderator: | NETCAD::STEFANI |
| Created: | Thu Apr 27 1989 |
| Last Modified: | Thu Jun 05 1997 |
| Last Successful Update: | Fri Jun 06 1997 |
| Number of topics: | 2259 |
| Total number of notes: | 8590 |
Can we get help on the best way to configure TCP-IP to get the maximum
throughput for FDDI (and eventually DEC OSF/1 V3.2.
The test configuration is either 2 2100 4/275 or 1 DEC3000/900 and one
2100 4/275. The 2100 have PCI FDDI boards. Computers have with 256 Mbytes
memory each
We have made tests using the examples supplied in DEC-OSF/1
socketserver.c and socketclient.c in :
/usr/usr/examples/network_programming
( with modifications to eliminate all non network code). Our tests give us a
best 75 Mbits/sec. (9.3 Mbytes/sec.) for buffers of 4096 bytes.
This is too low compared to known results posted here on other
machines. This is why we need help to optimize.
Thanks very much for a quick help.
Soumetty.
| T.R | Title | User | Personal Name | Date | Lines |
|---|---|---|---|---|---|
| 1671.1 | NETRIX::thomas | The Code Warrior | Wed May 03 1995 18:26 | 3 | |
You need increase the SO_RCVBUF and SO_SNDBUF for the sockets. You need to be able to fill the ring for your time with the token. The default socket buffer sizes are insufficent to do this. 120KB or more will really help performance. | |||||