From 56cf0be13f5e8893805241022f7e6b1ed3be7f78 Mon Sep 17 00:00:00 2001
From: Francis Stephens <francisstephens@gmail.com>
Date: Wed, 22 Feb 2017 17:25:59 +0100
Subject: [PATCH] Adding GCCPUFraction metric to goCollector

---
 prometheus/go_collector.go | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/prometheus/go_collector.go b/prometheus/go_collector.go
index 1ae9b8f..f967645 100644
--- a/prometheus/go_collector.go
+++ b/prometheus/go_collector.go
@@ -217,6 +217,14 @@ func NewGoCollector() Collector {
 				),
 				eval:    func(ms *runtime.MemStats) float64 { return float64(ms.LastGC) / 1e9 },
 				valType: GaugeValue,
+			}, {
+				desc: NewDesc(
+					memstatNamespace("gc_cpu_fraction"),
+					"The fraction of this program's available CPU time used by the GC since the program started.",
+					nil, nil,
+				),
+				eval:    func(ms *runtime.MemStats) float64 { return ms.GCCPUFraction },
+				valType: GaugeValue,
 			},
 		},
 	}