It seems that there is a problem with the kernel default I/O scheduler, CFQ. The following worked for me.
https://techtitbits.com/2010/04/get-rid-of-freeze-ups-during-disk-io-activity-in-ubuntu/
It seems that there is a problem with the kernel default I/O scheduler, CFQ.
The following worked for me.
https:/ /techtitbits. com/2010/ 04/get- rid-of- freeze- ups-during- disk-io- activity- in-ubuntu/