diff options
author | 2015-02-11 12:28:34 -0800 | |
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committer | 2015-02-11 12:28:34 -0800 | |
commit | 2fe2ec6736b19df8b278085ac1a19c787be50887 (patch) | |
tree | 9784ba2dffb8d2997103c2e8db6daf33b51fb68e /src/node/examples | |
parent | 909bfaea41ddfd44e6d96a3fff57495b7b7b9a06 (diff) |
Added standard performance metrics
Diffstat (limited to 'src/node/examples')
-rw-r--r-- | src/node/examples/perf_test.js | 21 |
1 files changed, 16 insertions, 5 deletions
diff --git a/src/node/examples/perf_test.js b/src/node/examples/perf_test.js index 7da600c615..c5e2872736 100644 --- a/src/node/examples/perf_test.js +++ b/src/node/examples/perf_test.js @@ -83,6 +83,16 @@ function runTest(iterations, callback) { warmUp(100); } +function percentile(arr, percentile) { + if (percentile > 99) { + percentile = 99; + } + if (percentile < 0) { + percentile = 0; + } + return arr[(arr.length * percentile / 100)|0]; +} + if (require.main === module) { var count; if (process.argv.length >= 3) { @@ -91,13 +101,14 @@ if (require.main === module) { count = 100; } runTest(count, function(results) { + var sorted_intervals = _.sortBy(results.intervals, _.identity); console.log('count:', count); console.log('total time:', results.total, 'us'); - console.log('min latency:', _.min(results.intervals), 'us'); - console.log('max latency:', _.max(results.intervals), 'us'); - console.log('average latency:', _.reduce(results.intervals, function(a, b){ - return a+b; - }) / count, 'us'); + console.log('median:', percentile(sorted_intervals, 50), 'us'); + console.log('90th percentile:', percentile(sorted_intervals, 90), 'us'); + console.log('95th percentile:', percentile(sorted_intervals, 95), 'us'); + console.log('99th percentile:', percentile(sorted_intervals, 99), 'us'); + console.log('QPS:', (count / results.total) * 1000000); }); } |