I tested a transfer from sda (ide) to sdb (Usb) of an iso (700mb). The worst for me is the deadline, wich is about 0.5MB/s slower than cfq. Anticipatory is about 0.7MB/s faster. At the end I stay with cfq.
Il 19/10/2009 08:40, Hated On Mostly ha scritto: > If people could post whether or not CFQ is enabled and whether they > still have the slow usb problem that would be great info: > > ------------- > http://www.cyberciti.biz/faq/linux-change-io-scheduler-for-harddisk/ > > Task: View Current Disk scheduler > > Assuming that your disk name /dev/sda, type in a terminal: > > cat /sys/block/sda/queue/scheduler > > -------- > > Copy and paste the output of the above command. > > My system shows: > > noop anticipatory [deadline] cfq > > Which means my system (9.10 Karmic Koala beta with no updates) is using > deadline by default and I am currently not experiencing the problem. I > was experiencing the slow USB transfer speeds in 8.04 Hardy Heron and > 8.10 Intrepid Ibex. > > -- ehci_hcd module causes I/O errors in USB 2.0 devices https://bugs.launchpad.net/bugs/88746 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
