I would like to know if I am throttling traffic based on configured limits. If so, I might want to change these limits to throttle more or less.

These limits are typically designed to protect the system from being overwhelmed in case of a DDOS. However, sometimes the throttles are set low enough that they impact throughput unnecessarily during normal operation.

Priorities

• Fetch-limits
• clients per query
• client-quotas
• TCP quotas
• RRL

? Is this server being throttled by fetch-limits or is this zone being throttled by fetch-limits? Log instances of crossing the thresholds where throttling kicks in, when you cross the threshold again on the way down.

Several specific problems we would like to address are:

• bind9#665 Add "rndc fetchlimits" command to dump currently-active ADB rate-limited servers and zones
• bind9#915 Add ability to determine frozen zones
• bind9#1232 (closed) [ISC-support #15166] expose zone timers (reload, refresh, expire) via stats channel