Seems to be caused by write barriers on ext4. barrier=0 on mount makes iotop data show faster IO than ext3 - around 20M/s average.
-- Oracle I/O performance in Lucid appaling https://bugs.launchpad.net/bugs/599330 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
