bench: Simplify duration arguments to benchmarks

For throughput benchmarks, run with just 5s durations rather than 1s and 3s.

For startup benchmark, run with just a single 1s duration, since it's very
consistent anyway.

2 files changed, 2 insertions, 2 deletions

diff --git a/benchmark/fs/readfile.js b/benchmark/fs/readfile.js
index 38548ef64..ac3241901 100644
--- a/benchmark/fs/readfile.js
+++ b/benchmark/fs/readfile.js
@@ -8,7 +8,7 @@ var filename = path.resolve(__dirname, '.removeme-benchmark-garbage');
 var fs = require('fs');
 
 var bench = common.createBenchmark(main, {
-  dur: [1, 3],
+  dur: [5],
   len: [1024, 16 * 1024 * 1024],
   concurrent: [1, 10]
 });
diff --git a/benchmark/fs/write-stream-throughput.js b/benchmark/fs/write-stream-throughput.js
index d37299ab3..57ce4c4fe 100644
--- a/benchmark/fs/write-stream-throughput.js
+++ b/benchmark/fs/write-stream-throughput.js
@@ -6,7 +6,7 @@ var filename = path.resolve(__dirname, '.removeme-benchmark-garbage');
 var fs = require('fs');
 
 var bench = common.createBenchmark(main, {
-  dur: [1, 3],
+  dur: [5],
   type: ['buf', 'asc', 'utf'],
   size: [2, 1024, 65535, 1024 * 1024]
 });