Hi, I installed a new hardware for my file server/http server box. The previous hardware was using fast ethernet. The new hardware uses gigabit ethernet. I made a clean install of Ubuntu 9.04 server (32 bits version) and configured samba. When trying to transfer large files (in the gigabytes range) to the server (from my main desktop that is running 9.04 desktop X64 and also uses gigabit ethernet), I come across the problem described above. The transfer stalls after a while (it starts with ~21 MB/sec rates, then stops after a few hundred MB).
Here is what I found while poking around: - If I ping (from the server side) my desktop, the network connection comes back after 15 or 20 seconds of "unreachable host". It seems that Not sure if it really helps establish the network connection again. - I noticed that a lot of memory is used while transferring large files (and is apparently not released after the network stalls). My server box has 512MB. Before starting a transfer I have about 130 MB of free RAM if I remember correctly, but after starting a large file transfer this goes down to about 5MB! Even worst I see the same problem of my desktop box. This box has 8GB of RAM. I rarely go above 2GB (including cache), but this goes up to about 95% of memory used (84% towards cache). The cache is not freed after the transfer is stopped. - The problem seems to occur when copying a file from the server to the client. I the other direction (client to server), things seem to work fine (don't take my word on that, I need to confirm this behaviour) Something is going really wrong here! I had no problem with the previous server running at 100Mbps. It seems that Linux has some serious issues with fast transfers of huge files. Very very frustrating. It simply render my server useless for backup purposes! Faustino -- network dies with large amount of high speed traffic https://bugs.launchpad.net/bugs/296162 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
