From f921fe3e35fb4377453e086540b5c321d289e686 Mon Sep 17 00:00:00 2001
From: Andrea Bocci <andrea.bocci@cern.ch>
Date: Sat, 21 Mar 2020 21:34:45 +0100
Subject: [PATCH] Add a description of the available metrics

---
 HLTrigger/Timer/plugins/FastTimerService.cc | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/HLTrigger/Timer/plugins/FastTimerService.cc b/HLTrigger/Timer/plugins/FastTimerService.cc
index 7d8fb8a88bde4..c4fcb33a9517b 100644
--- a/HLTrigger/Timer/plugins/FastTimerService.cc
+++ b/HLTrigger/Timer/plugins/FastTimerService.cc
@@ -1352,6 +1352,13 @@ json FastTimerService::encodeToJSON(edm::ModuleDescription const& module, Resour
 
 void FastTimerService::writeSummaryJSON(ResourcesPerJob const& data, std::string const& filename) const {
   json j;
+
+  // write a description of the resources
+  j["resources"] = json::array({json{{"time_real", "real time"}},
+                                json{{"time_thread", "cpu time"}},
+                                json{{"mem_alloc", "allocated memory"}},
+                                json{{"mem_free", "deallocated memory"}}});
+
   // write the resources used by the job
   j["total"] = encodeToJSON("Job", callgraph_.processDescription(0).name_, data.events, data.total + data.overhead);