diff --git a/lib/gitlab/metrics/influx_db.rb b/lib/gitlab/metrics/influx_db.rb
index bdf7910b7c7..153e236d018 100644
--- a/lib/gitlab/metrics/influx_db.rb
+++ b/lib/gitlab/metrics/influx_db.rb
@@ -38,6 +38,7 @@ module Gitlab
         # This is memoized since this method is called for every instrumented
         # method. Loading data from an external cache on every method call slows
         # things down too much.
+        # in milliseconds
         @method_call_threshold ||= settings[:method_call_threshold]
       end
 
diff --git a/lib/gitlab/metrics/method_call.rb b/lib/gitlab/metrics/method_call.rb
index 6fb8f564237..a030092df37 100644
--- a/lib/gitlab/metrics/method_call.rb
+++ b/lib/gitlab/metrics/method_call.rb
@@ -72,7 +72,7 @@ module Gitlab
       # Returns true if the total runtime of this method exceeds the method call
       # threshold.
       def above_threshold?
-        real_time >= Metrics.method_call_threshold
+        real_time_milliseconds >= Metrics.method_call_threshold
       end
 
       def call_measurement_enabled?
diff --git a/lib/gitlab/metrics/system.rb b/lib/gitlab/metrics/system.rb
index b31cc6236d1..4852017bf38 100644
--- a/lib/gitlab/metrics/system.rb
+++ b/lib/gitlab/metrics/system.rb
@@ -55,7 +55,6 @@ module Gitlab
       #
       # Returns the time as a Float.
       def self.monotonic_time
-
         Process.clock_gettime(Process::CLOCK_MONOTONIC, :float_second)
       end
     end
diff --git a/spec/lib/gitlab/metrics/method_call_spec.rb b/spec/lib/gitlab/metrics/method_call_spec.rb
index 5341addf911..91a70ba01a0 100644
--- a/spec/lib/gitlab/metrics/method_call_spec.rb
+++ b/spec/lib/gitlab/metrics/method_call_spec.rb
@@ -8,7 +8,8 @@ describe Gitlab::Metrics::MethodCall do
     it 'measures the performance of the supplied block' do
       method_call.measure { 'foo' }
 
-      expect(method_call.real_time).to be_a_kind_of(Numeric)
+      expect(method_call.real_time_seconds).to be_a_kind_of(Numeric)
+      expect(method_call.real_time_milliseconds).to be_a_kind_of(Numeric)
       expect(method_call.cpu_time).to be_a_kind_of(Numeric)
       expect(method_call.call_count).to eq(1)
     end
@@ -84,13 +85,13 @@ describe Gitlab::Metrics::MethodCall do
     end
 
     it 'returns false when the total call time is not above the threshold' do
-      expect(method_call).to receive(:real_time).and_return(9)
+      expect(method_call).to receive(:real_time_seconds).and_return(0.009)
 
       expect(method_call.above_threshold?).to eq(false)
     end
 
     it 'returns true when the total call time is above the threshold' do
-      expect(method_call).to receive(:real_time).and_return(9000)
+      expect(method_call).to receive(:real_time_seconds).and_return(9)
 
       expect(method_call.above_threshold?).to eq(true)
     end
@@ -131,7 +132,7 @@ describe Gitlab::Metrics::MethodCall do
   describe '#real_time' do
     context 'without timings' do
       it 'returns 0.0' do
-        expect(method_call.real_time).to eq(0.0)
+        expect(method_call.real_time_seconds).to eq(0.0)
       end
     end
 
@@ -139,7 +140,7 @@ describe Gitlab::Metrics::MethodCall do
       it 'returns the total real time' do
         method_call.measure { 'foo' }
 
-        expect(method_call.real_time >= 0.0).to be(true)
+        expect(method_call.real_time_seconds >= 0.0).to be(true)
       end
     end
   end