Eric, The problem is that your problem may be very different from other peoples' problem. First of all, in your test, you are continually dirtying the page cache with "cp /dev/zero /mnt/bigfile". This brings in filesystem effects, and VM effects, and so it's hard to tell what is actually going on. Without a lot of instrumentation, and knowing exactly the state of memory, and when the filesystem might be doing a commit, it's hard to say exactly what might be going on. You also haven't given us the kernel bootup messages (dmesg output after the system boots), as well as the type of device that you are using, the lsusb output, etc., etc., etc. You haven't told us how much memory there is in the system.
And certainly the test which you did "(cp /dev/zero /media/disk/bigfile &); sleep 10 ; time echo foo > /media/disk/test" is not one that we can replicate on Windows, so the assertion that something is wrong is also not something which is immediately obvious given the very limited amount of information you have given. Maybe it's *somewhere* in this bug report, bug this is why it is really not useful to mingle multiple users' problems in one bug report. If you want to open a separate bug report, give lots of details, and be willing to work with people who can suggest specific, repeatable experiments that examine one aspect of the system at a time, then we can try to see if there's something unusual. If you just want to whine about how horrible Ubuntu or Linux is, then keep on doing what you're doing here. It's not going to lead to anything useful though. But if you are really interested in being constructive, we need your help in giving us something useful in terms of enough information so we can find the root cause of a problem, and then try to solve it. -- file transfers on USB disk are very slow https://bugs.launchpad.net/bugs/197762 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
