Docker Service Appears Catton, How to Investigate the Reason?

  docker, question

In the process of using docker, it was found that the implementation speed of docker build was rather slow, and the previous service was almost inaccessible. Cpu and mem occupancy rates are not satisfactory.

After being stuck for a period of time, the situation has returned to normal. How can the cause be investigated?

Linux 3.10.0-693.21.1.el7.x86_64 #1 SMP Wed Mar 7 19:03:37 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux

Docker logs are posted, and build images are generally not done together on machines running services.