I can confirm this is happening to me with 2.6.31-4 on Karmic. Here is a run of dd with and without dsync to a USB stick.
pgra...@desktop:~$ sudo dd if=/dev/zero of=/dev/sde1 bs=1M count=1024 oflag=dsync 1024+0 records in 1024+0 records out 1073741824 bytes (1.1 GB) copied, 71.9165 s, 14.9 MB/s pgra...@desktop:~$ sudo dd if=/dev/zero of=/dev/sde1 bs=1M count=1024 1024+0 records in 1024+0 records out 1073741824 bytes (1.1 GB) copied, 584.309 s, 1.8 MB/s -- dd extremely slow writing to usb key without oflag=dsync https://bugs.launchpad.net/bugs/392288 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
