Add the GPU memory metrics to the Grafana dashboard.

[nageru] / metrics.cpp

diff --git a/metrics.cpp b/metrics.cpp
index eae1e25158c0ec7233bdfd7737b5df7321320217..86c3d591872a4a38d53d34a55216b66e4d6d1405 100644 (file)
--- a/metrics.cpp
+++ b/metrics.cpp
@@ -317,7 +317,13 @@ string Summary::serialize(Metrics::Laziness laziness, const string &name, const
                vector<pair<string, string>> quantile_labels = labels;
                quantile_labels.emplace_back("quantile", quantile_ss.str());
 
-               ss << Metrics::serialize_name(name, quantile_labels) << " " << quantile_and_value.second << "\n";
+               double val = quantile_and_value.second;;
+               if (isnan(val)) {
+                       // Prometheus can't handle “-nan”.
+                       ss << Metrics::serialize_name(name, quantile_labels) << " NaN\n";
+               } else {
+                       ss << Metrics::serialize_name(name, quantile_labels) << " " << val << "\n";
+               }
        }
 
        ss << Metrics::serialize_name(name + "_sum", labels) << " " << sum.load() << "\n";