Ubuntu – High CPU load while IDLE

central-processing-unitraid1Ubuntu

I have a little issue with CPU load on an ubuntu server 16.04. In IDLE is still: load average: 1.05, 1.06, 1.11. Processes, which are the biggest consumers of resources are md126_raid1 and md126_resync. Of course, on HDD is no activity.

Mountpoint of this drive is:

/dev/md126      2.7T   74M  2.6T   1% /mnt/data0

Raid1 is via raid integrated in Motherboard MSI H170M PRO-VDH, CPU is Intel(R) Pentium(R) CPU G4400 @ 3.30GHz.

Some idea, what can be a case of this issue? or is just something like "tax" for using integrated raid solution on this Motherboard?

Best Answer

The md126 device indicates that you are using Linux software RAID on the server.

The resync process indicates that it is syncing the two drives in the RAID1 setup. Load average over 1 means that the resync process is using one CPU completely for the resync.

You can run cat /proc/mdstat to see the progress of the resync.

Once the resync is finished, CPU load will go back to close to zero.

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