This article describes what to do when a device experiences transient high system CPU (softirq) and a recurring level of src-vis CPU usage in user space.
Solution
src-vis daemon/process is used for device identification configured on the interfaces, and it is used to gather information about the devices operating on the network:
- MAC address.
- IP address.
- Operating system.
- Hostname.
- User name.
- How long ago the device was detected and on which FortiGate interface.
The device experiences transient high system CPU (softirq) and a recurring level of src-vis CPU usage in user space.
A CPU profiling taken at a time of high system CPU would show a pattern like:
