Setting elevator=noop solve the problem for me, the write speed to usb stick is stable, about 5-6 mb/sec all the time. But now sometimes I see the HDD performance problems while system write to usb. Maybe try other elevator types? Completely Fair Queuing — elevator=cfq Deadline — elevator=deadline NOOP — elevator=noop Anticipatory — elevator=as
-- 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