Messages in this thread |  | | Date | Mon, 08 Jan 2001 21:26:23 +1100 | From | Andrew Morton <> | Subject | Re: Network Performance? |
| |
Tim Sailer wrote: > > On Sat, Jan 06, 2001 at 10:11:40PM +1100, Andrew Morton wrote: > > this issue was discussed on the netdev mailing list a few weeks > > back. > > > > It's very unfortunate that the web archives of netdev > > stopped working several months ago and there now appears > > to be no web archive of netdev@oss.sgi.com. > > > > Go to http://oss.sgi.com/projects/netdev/archive/ and > > pull down the November and December archives. > > > > The subject was "linux to solaris tcp issues on WAN". > > > > The conclusion was "The problem is also fixed with > > 2.4.0-test12pre3". Dunno about kernel 2.2 though. > > Well, on Friday, we pulled down the 'official' 2.4.0, and had the > same experience... nothing better. Should I get the -test12-pre3 kernel > and try that one specifically?
I doubt if that would help.
I claim no expertise in this area, but perhaps we can get some protocol gurus interested.
To recap:
You're sending and receiving FTP/TCP/IP4 to Solaris and AIX hosts You have a 1000kbyte window size You have an 80 megabit/sec pipe. You're getting 1.8 megabits/sec.
What is the round-trip time on the WAN?
Packet loss?
Does the problem occur in both directions?
Are you _sure_ the window size is being set correctly? How is it being set?
Are you able to generate TCP dumps when the problem is happening?
- - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org Please read the FAQ at http://www.tux.org/lkml/
|  |