Celejar wrote: > On Fri, 14 Sep 2007 21:59:02 -0400 > Andrey Falko <[EMAIL PROTECTED]> wrote: > > >> Hi everyone, >> >> I am having some very strange, likely Debian-related networking >> problems. I was trying to set up some bandwidth tests between a few >> nearly identical machines. I label them s0, s1, s2. All are Debian >> boxes. When I transfer a large file from one box to another, the >> transfer starts out at around 50 megabytes per second, but quickly >> drops to below 10. I was battling with this issue for quite some >> time and decided to do an experiment. >> >> I had to Gentoo livecds lying around, so I booted s1 and s2 into Gentoo. >> Doing transfers between s1 and s2 were perfect; they remained over 50 >> throughout the entire transfer. Transferring to s0 from s1 or s2 >> however, the speed would start at around 50 and drop to below 10 for the >> remainder of the transfer. Transferring from s0 to either s1 or s2, the >> transfer was perfect. >> >> So in sum: Debian boxes can't sustain download speeds, but can sustain >> upload speeds. >> >> I am far from a Debian expert, so I don't know where to start looking to >> understand what the problem is. I don't know what info is needed. >> >> I have Intel e1000 and Nvidia nforce NIC in each machine. I've tried all >> combinations of Intel to Nvidia NICs. I am running kernel-2.6.20.18. >> >> Best regards, >> Andrey Falko >> > > I'm no networking expert either, but perhaps you should try a dedicated > network benchmark tool, such as iperf. > > Celejar > -- > mailmin.sourceforge.net - remote access via secure (OpenPGP) email > ssuds.sourceforge.net - A Simple Sudoku Solver and Generator > > I've tried tomahawk bandwidth test. It performed sub-par. Unfortunately, I can't try too many dedicated bandwidth tests via the livecds. But scp-ing files back and forth should work fast in either direction, right? I'll give iperf a go and post the results tomorrow.
Thank you for the response. -Andrey -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
