Comment 16 for bug 601299

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Rocko (rockorequin) wrote : Re: maverick btrfs slow install

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.