On Thu, Aug 16, 2012 at 11:09 AM, Andreas Dilger [off-list ref] wrote:
It is a bit strange that _mounting_ uses 92% CPU. Hmm, there was a bug
reported for 3.5.1, see "Re: Upgraded from 3.4 to 3.5.1 kernel: machine
does not boot", and reverting the patch with git commit hash
"8aeb00ff85ad25453765dd339b408c0087db1527" resolved the problem. This
slowdown was only seen with larger devices.
Thanks a lot Andreas, that commit was the cause. Reverting it:
$ time mount /mnt/raid
0.00s user 0.03s system 5% cpu 0.511 total
--
Javier Marcet [off-list ref]