Hello
Well it appear that on a plesk server with only os reloaded we see some load.
I search the raid but it was finished to re sync so no load should be there .
After debugging with iotop I see this
505 be/3 root 0.00 B/s 0.00 B/s 0.00 % 99.99 % [jbd2/md1-8]
After a little search it appear that is from ext4 journaling.
Not to disable ext4 journaling is not so easy because you have to umount the partition, or to be monuted in read only .
After a little search I found out that rsyslog was the problem was hitting the limit, and was writing a lot of information into the log. After disabling the rsyslog everything was back to normal . However I am waiting again the problem to see what pid was causing this.
Any way strange problem .
Regards
