RishiRamraj: You can see https://help.ubuntu.com/community/DiskPerformance for general advice on testing performance of a disk and reporting your issue. Your snip from dmesg tells that you plugged in a USB 2.0 device, but that is about what can be said from that information, so further performance tests are certainly required.
Murz and Digital5700: Your issues with noop as a much better scheduler than cfq are very interesting, but I'm not sure what the best way forward is, bug #381300 and #131094 already exists without really going anywhere. If you can make a good report with dstat numbers etc. and with the newest upstream kernel compiled from git there should be a good chance of getting Jens Axboe looking into the issue (he's the upstream kernel developer that maintains the I/O scheduler subsystem). alex123: You should verify that your front panel USB connections are not USB 1.1, see https://help.ubuntu.com/community/DiskPerformance. -- file transfers on USB flash key (pendrive) are slowing down with time 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
