for me the error is not occuring any more when I load the module with options forcedeth max_interrupt_work=200
but it seems to be ignored during boot. So I have do the following in /etc/rc.local: rmmod forcedeth && modprobe forcedeth && /etc/init.d/networking restart now iperf runs at full gigabit speed without any errors! ** Changed in: linux-source-2.6.20 (Ubuntu) Status: New => Confirmed -- Random pauses when transferring data at gigabit speeds with forcedeth driver https://bugs.launchpad.net/bugs/130075 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs