The health check with pub/health_check.php, that is configured in the probe section of the Varnish (version 6) configuration, seems to take a couple of seconds and causes some significant CPU usage. Is this normal or is there anything wrong? I don't know that and I'd like to know what could be expected.
Afaik, the default interval time is set to 5 seconds. Is this a reasonable value or should it be set to another?