public void testPerf() throws IOException {

//        final HttpGet request = new HttpGet("http://petstore-demo-endpoint.execute-api.com/petstore/pets");
//        final HttpGet request = new HttpGet("http://11ro68yamg.execute-api.us-east-1.amazonaws.com/petstore/pets"); //cf->petstore
        final HttpGet request = new HttpGet("https://11ro68yamg.execute-api.us-east-1.amazonaws.com/prod");
        final int numRequests = 10000;

        long totalLatency = 0;
        final int[] histogram = new int[100];
        final List<Integer> latencies = new ArrayList<>();

        for (int i = 0; i < numRequests; i++) {

            final CloseableHttpClient client = HttpClients.createDefault();

            final Stopwatch sw = Stopwatch.createStarted();
            final CloseableHttpResponse resp = client.execute(request);
            sw.stop();

            long millis = sw.elapsed(TimeUnit.MILLISECONDS);
            totalLatency += millis;

            if (millis > 600) {
                LOG.warn(String.format("Request took %dms" + ", request ID: %s", millis, resp.getFirstHeader("X-Amzn-Requestid")));
            }

            histogram[((int) (millis / 100))]++;
            latencies.add((int) millis);
        }

        Collections.sort(latencies);

        final Integer p50 = latencies.get((50 * (numRequests) / 100) - 1);
        final Integer p90 = latencies.get((90 * (numRequests) / 100) - 1);
        final Integer p99 = latencies.get((99 * (numRequests) / 100) - 1);
        final Integer p100 = latencies.get((100 * (numRequests) / 100) - 1);

        LOG.info(String.format("Num requests: %d Avg latency: %fms", numRequests, totalLatency / (double) numRequests));
        LOG.info(String.format("P50: %dms P90: %dms P99: %dms P100: %dms", p50, p90, p99, p100));

        LOG.info(String.format("Distribution: "));
        for (int i = 0; i < histogram.length; i++) {
            LOG.info(i*100 + "ms - " + (i+1)*100 + "ms: " + histogram[i]);
        }
    }