Here is recent question describing this issue: http://askubuntu.com/questions/397249/system-freezes-unresponsive- unusable-when-copying-large-file-to-usb
I tried to reduce cache size up to vm.dirty_background_ratio = 2 vm.dirty_ratio = 5 --- system became much more usable when files being copied, but still laggy (e.g. tabs switching in gnome-terminal hangs, text input freezes on several seconds in Firefox). -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1267648 Title: Copying large amount of files to USB stick makes system laggy or even freeze/hang (temporary) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1267648/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
