Communication

Figure 1. Communication - Time Parameters

On the Communication tab "timing" parameters for the communication between NGA frontend and backend are specified. These parameters influence the write and read performance and must not be changed if the consequences are not fully understood.

  • For experts only: Check this check box to specify the values below. These settings are only for experts and a wrong configuration may lead to shortage of data to the backend.
  • ZMQ timeout [ms]: Polling interval for ZMQ, a high value will decrease performance (but increase the response time i.e. to stop the NGA), a low value will use more CPU performance. NOTE: ZMQ communication is not encrypted.
  • Backend writing [ms]: Maximum wait time for backend response of a write operation; if an operation takes longer, an error message is shown and this value should be increased.
  • Async task [ms]: Time to wait for finishing DB write operation; if this period elapses, NGA will write the current data buffer to disk (if disk buffering is active).