On Thu, Aug 16, 2012 at 11:09 AM, Andreas Dilger <adilger@xxxxxxxxx> 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 <jmarcet@xxxxxxxxx> -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html