Container unusual high cpu usage


I’m having some problems with unusual high cpu usage with a apache php container. The cpu usage is ver high (300% and more). The info output of mod status shows as far as i can see a normal usage with plenty of available workersm aside from some “keepalive” and “waiting for connection” processes that have a high cpu usage. The screenshot below provides some additional info. The first two are output from mod_status from apache. The second two are output of docker stat and top inside the apache container. Does anybody have an idea why the cpu usage is so high?

Also output of docker info below
Containers: 8
Running: 2
Paused: 0
Stopped: 6
Images: 8
Server Version: 1.13.1
Storage Driver: overlay
Backing Filesystem: xfs
Supports d_type: false
Logging Driver: json-file
Cgroup Driver: cgroupfs
Volume: local
Network: bridge host macvlan null overlay
Swarm: inactive
Runtimes: runc
Default Runtime: runc
Init Binary: docker-init
containerd version: aa8187dbd3b7ad67d8e5e3a15115d3eef43a7ed1
runc version: 9df8b306d01f59d3a8029be411de015b7304dd8f
init version: 949e6fa
Security Options:
Profile: default
Kernel Version: 3.10.0-514.el7.x86_64
Operating System: Red Hat Enterprise Linux Server 7.3 (Maipo)
OSType: linux
Architecture: x86_64
CPUs: 8
Total Memory: 31.26 GiB
Name: nmblive
Docker Root Dir: /var/lib/docker
Debug Mode (client): false
Debug Mode (server): false
Experimental: false
Insecure Registries:
Live Restore Enabled: false