[Bug 932033] Re: copying files to USB 2.0 drive is damn slow

2012-05-16 Thread Launchpad Bug Tracker
[Expired for linux (Ubuntu) because there has been no activity for 60 days.] ** Changed in: linux (Ubuntu) Status: Incomplete => Expired -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/932033 Ti

[Bug 932033] Re: copying files to USB 2.0 drive is damn slow

2012-02-22 Thread Ming Lei
** Changed in: linux (Ubuntu) Status: Confirmed => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/932033 Title: copying files to USB 2.0 drive is damn slow To manage notifications

Re: [Bug 932033] Re: copying files to USB 2.0 drive is damn slow

2012-02-19 Thread Ming Lei
In theory, the max usb 2.0 bulk transfer speed is 52MB/sec[1], also for usb mass storage device, there are CBW(31byte), CSW(13byte) and some control info in DATA packet, so the actual usb mass storage performance is smaller than 52MB. Generally usb device can not respond quickly enough to keep pac

[Bug 932033] Re: copying files to USB 2.0 drive is damn slow

2012-02-14 Thread matteo sisti sette
I'm not sure whether this is a regression or not, but I guess I would have noticed before if it was present in previous version. One thing that I do know I had observed in previous versions (and I reported as a separate bugs) was that copying thousands of small files was very slow, and much slow

[Bug 932033] Re: copying files to USB 2.0 drive is damn slow

2012-02-14 Thread Joseph Salisbury
Do you know if this issue happened in a previous version of Ubuntu, or is this a new issue? Would it be possible for you to test the latest upstream kernel? It will allow additional upstream developers to examine the issue. Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the l

[Bug 932033] Re: copying files to USB 2.0 drive is damn slow

2012-02-14 Thread Brad Figg
** Changed in: linux (Ubuntu) Status: New => Confirmed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/932033 Title: copying files to USB 2.0 drive is damn slow To manage notifications about t

[Bug 932033] Re: copying files to USB 2.0 drive is damn slow

2012-02-14 Thread matteo sisti sette
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/932033 Title: copying files to USB 2.0 drive is damn slow To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/