06.07.2011, 01:14, "Patrick O'Callaghan" <pocallaghan@xxxxxxxxx>: > On Tue, 2011-07-05 at 17:01 +0800, 某因幡 wrote: > >> Hi, >> I've tried to copy some different files to an USB flash disk and an USB HDD >> and tried different USB hubs. >> After a while the system gets very slow, switching between windows can take >> quite a while. The copying speed is slow, too(only several MB/s to an empty >> USB HDD). >> The machine is not old, just bought it this year. And on the same machine >> the same problem is not seen on Ubuntu 10.04 and Windows 7. >> Any ideas? > > Flash and HDD are two different cases. Flash drives can become slow > because of their internal architecture, fragmentation, wear leveling > etc. (lots of info on this via Google). I use an 8GB pen drive a lot and > every so often find it useful to reformat it completely, which seems to > help. This is a VFAT drive since it has to be compatible with another > (non-Linux) system. > > In the HDD case, you may just have a slow USB port. Check if it's USB-1, > USB-2 or USB-3 (unlikely at the moment). And remember that USB doesn't > do DMA, so writing large amounts of data means soaking up CPU time. I think it only must be slow, the copying process. But, I have an 8GB SD HC card in my phone which connects via a miniUSB cable, and when I copy mp3 files it hangs the whole system. The mouse cursor stops responding. I think a bug report should be created. Not sure about the component, though. -- Best regards, Misha Shnurapet, Fedora Project Contributor Email: shnurapet AT fedoraproject.org, IRC: misha on freenode https://fedoraproject.org/wiki/shnurapet, GPG: 00217306 -- users mailing list users@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe or change subscription options: https://admin.fedoraproject.org/mailman/listinfo/users Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines
