So I managed to set up a Debian Woody box with Tomcat + Scarab, Apache + Subversion, winbind authentication, Mailman, and a few other goodies. I thought that everything was fine, until I tried to move the existing Subversion repository over to the new system via SMB. I then found that files larger than 64k would transfer at pitiful rates -- essentially, chunks (64k or smaller) of the files would float over with gaps of many seconds between them. At first I thought the problem was essentially a Samba problem, but I achieved similar (lack of) results with FTP and HTTP. This behavior is limited to the local network; file transfer from the Internet moves at a good clip. Additionally, pulling a file from the Linux box to another computer on the network works just fine.
Now I'm at a loss for what's going on, and Linux system administration isn't at all my specialty. I've looked all over the Internet, and only found one message thread noting similar behavior: gaps in transmission from the Linux box to Win2k, but good receive behavior. The resolution: it went away by itself! Anybody have a clue? The thing is essentially unusable as it is!
Relevant (?) specs: Dell Precision 420 - Dual 800MHz P3, 512MB RAM Integrated 3com 3c920 (3c905C compatible, according to the Dell site) Kernel: 2.6.5.1 (I started out with 2.4.19; switching was an act of desperation).
Any help would be greatly appreciated!
Kim Sparrow Sr. Software Engineer www.LightPointe.com Speed of fiber. Flexibility of wireless.
I suffered from a similar problem on a woody box. After a lot of frustration and testing, I found out that a lot of UDP packets were getting dropped in local network communications during high volume connections. I still don't know exactly what was going on, but I believe that it was at least partly faulty drivers for my nic. Upgrading my kernel to 2.4.x solved my problems. You're already ahead of me there, having upgraded your kernel a few times. I can only suggest grabbing a good high-volume network performance analyzer to see what's going on. I *think* the tool I used was called netperf.
Good luck!
Paul
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