The patch posted by Chris Mason on the btrfs mailing list http://news.gmane.org/gmane.comp.file-systems.btrfs (patch attached) makes a huge difference on my Maverick VM.
My test case was to turn off the host SATA cache for the VM and then install a hefty package (netbeans in this case). atop showed avio maxing out at 2ms during the install compared to the 20-30ms I was seeing with the stock kernel. ** Patch added: "slowbtrfsfix-patch.diff" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/601299/+attachment/1506559/+files/slowbtrfsfix-patch.diff -- maverick btrfs slow install https://bugs.launchpad.net/bugs/601299 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
