https://bugzilla.novell.com/show_bug.cgi?id=799348 https://bugzilla.novell.com/show_bug.cgi?id=799348#c0 Summary: Slow USB-speed when copy large files to an usb-drive Classification: openSUSE Product: openSUSE Factory Version: 12.3 Beta 1 Platform: All OS/Version: openSUSE 12.2 Status: NEW Severity: Major Priority: P5 - None Component: KDE4 Workspace AssignedTo: kde-maintainers@suse.de ReportedBy: jackbauer900@gmail.com QAContact: qa-bugs@suse.de Found By: --- Blocker: --- User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:18.0) Gecko/20100101 Firefox/18.0 the issue is in openSuSE 12.2 too, the same as in openSuSE 12.3Beta1. the problem: when copy large files (>1Gb or so) to my usb-drive the transfer speed is round about 600kb/s for an USB2-drive only in writing direction. reading is just fine (10-11MB/s). tested whith various usb-drives, same issue. into the KDE4 the transfer-speed is rising up to >40MB/s and fells down to 600kb/s after a while. an old bug-report shows the same problem in openSUSE 12.2 with KDE3, but the workaround is not valid for KDE4. look here: https://bugzilla.novell.com/show_bug.cgi?id=784987 exactly the same problem here in openSUSE 12.2 to 12.3Beta1 the same usb-drive with other system like linuxmint has 8-9Mb/s write speed on my mashine. Reproducible: Always Steps to Reproduce: 1. changed the usb-drive, doesnt solve the problem 2. upgraded the kernel to 3.8RC from opensuse build-serve, doesnt solve the problem 3. tested with win7 and linuxmint13 problem solved Actual Results: - i mounted the usb-drive by hand over mount /dev/sdc1 .... , same problem - played around with the mount options (sync, flush ....), no succsess Expected Results: - normal a write speed from 5-6Mb/s out of the box tested on an ohter computer with different hardware like mine, same issue -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.