From 1e63968016509694d5cb7040f156a20b734a8d2c Mon Sep 17 00:00:00 2001
From: Giulio Eulisse <10544+ktf@users.noreply.github.com>
Date: Mon, 5 May 2025 11:55:59 +0200
Subject: [PATCH] DPL: do not calculate context quantities if the GUI is
 disabled

Correct solution would be to do that on demand, quick fix for now.
---
 Framework/Core/src/CommonServices.cxx | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/Framework/Core/src/CommonServices.cxx b/Framework/Core/src/CommonServices.cxx
index 22324cd84b390..ec2bc78c3c860 100644
--- a/Framework/Core/src/CommonServices.cxx
+++ b/Framework/Core/src/CommonServices.cxx
@@ -852,7 +852,10 @@ auto flushMetrics(ServiceRegistryRef registry, DataProcessingStats& stats) -> vo
     }
     monitoring.send(std::move(metric));
   });
-  relayer.sendContextState();
+  // Do not even calculate GUI related quantities if the GUI is disabled.
+  if (registry.get<DriverConfig const>().driverHasGUI) {
+    relayer.sendContextState();
+  }
   monitoring.flushBuffer();
   O2_SIGNPOST_END(monitoring_service, sid, "flush", "done flushing metrics");
 };