Simon Holm Thøgersen, I can try to do the reports, can you give me some step-by-step instructions and examples how I can do it better? I can try to install new kernel and do some tests, if it will not too hard and long process. At now I try deadline scheduler and see the problem again after copying about 1.5gb to the flash. At start when copying first gb the speed was about 5-6 mb/sec, but after 1.5gb slows down to 0.2-1.5 mb. I have attach part of output "iostat -m 1" command at ~1.6-1.7 gb copied and speed is slow down in deadline scheduler.
P.S. I have found an easy way yo check current scheduler and switch it without reboot at http://www.cyberciti.biz/faq/linux-change-io-scheduler-for-harddisk/: View Current Disk scheduler # cat /sys/block/{DEVICE-NAME}/queue/scheduler # cat /sys/block/sda/queue/scheduler Sample output: noop anticipatory deadline [cfq] Set I/O Scheduler For A Hard Disk To set a specific scheduler, simply type the command as follows: # echo {SCHEDULER-NAME} > /sys/block/{DEVICE-NAME}/queue/scheduler ** Attachment added: "iostat output for deadline scheduler" http://launchpadlibrarian.net/38337580/iostat_deadline_1.txt -- 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 Desktop Bugs, which is a bug assignee. -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
