diff --git a/testing/external/scripts/testing-setup.zeek b/testing/external/scripts/testing-setup.zeek
index b80e31e1c1..9285a23c6c 100644
--- a/testing/external/scripts/testing-setup.zeek
+++ b/testing/external/scripts/testing-setup.zeek
@@ -16,6 +16,10 @@
 # Exclude process metrics, they are non-deterministic.
 redef Telemetry::log_prefixes -= { "process" };
 
+# Increase default telemetry.log 30x to reduce log size
+# for traces spanning a long time period.
+redef Telemetry::log_interval = 1800sec;
+
 # Prevent the version_info metric from being logged as it's not deterministic.
 hook Telemetry::log_policy(rec: Telemetry::Info, id: Log::ID, filter: Log::Filter)
 	{
@@ -23,6 +27,19 @@ hook Telemetry::log_policy(rec: Telemetry::Info, id: Log::ID, filter: Log::Filte
 		break;
 	}
 
+# Filter out veto metrics and also loaded_script logs and telemetry logs due
+# depending on the configuration (heavily).
+hook Telemetry::log_policy(rec: Telemetry::Info, id: Log::ID, filter: Log::Filter)
+	{
+	if ( rec$prefix != "zeek" )
+		return;
+
+	# Filter all event-handler-invocations entries from telemetry.log
+	# except those having something to do with connections.
+	if ( rec$name == "event-handler-invocations" && /connection_.*/ !in cat(rec$label_values) )
+		break;
+	}
+
 # The IMAP analyzer includes absolute filenames in its error messages,
 # exclude it for now from analyzer.log.
 # https://github.com/zeek/zeek/issues/2659