[CentOS] strange speed of mkfs Centos vs. Debian

Wed Nov 13 13:14:47 UTC 2013
Dennis Jacobfeuerborn <dennisml at conversis.de>

On 13.11.2013 11:36, Götz Reinicke - IT Koordinator wrote:
> Hi,
> I'm testing a storage system and different network settings and I'm
> faced with a strange phenomen.
> Doing a mkfs.ext4 on the centos server lasts 11 minutes.
> The same mkfs.ext4 command on the debian installation is done in 20 seconds.
> It is formatting a 14 TB 10Gbit ISCSI Target.
> It is the same server. Centos and debian are installed on different
> internal harddisks.
> Any explanations why debian is so f*** fast? Any hint?

Is it possible that you use a relatively recent debian version compared 
to the older centos 5/6 versions available? If so you might want to look 
into the "lazy_itable_init" option for mkfs.ext4 which is probabaly used 
in the debian case but not the centos case (but will probably be used in