Kjournald takes too much io?

Question

linux

Good afternoon.
Such a question:
There is CentOs 6, it has two 500GB hard drives, both on ext3.
iotop shows that kjournald very often starts to eat a lot of IO
Judging by the wiki, the default journaling configuration for ext3 is ordered, that is, there should not be a heavy load.
mount is started with noatime flag
Where else can I dig?
Thank you.

Answer 1

smartmontools?