Hi,
we are experiencing a (slight) performance problem with HttpClient 4.4.1
while downloading big files from a remote server in the corporate intranet.
A simple test client:
HttpClientBuilder builder = HttpClientBuilder.create();
try (CloseableHttpClient client = builder.build()) {
HttpGet get = new HttpGet("...");
long start = System.nanoTime();
HttpResponse response = client.execute(get);
HttpEntity entity = response.getEntity();
File file = File.createTempFile("prefix", null);
OutputStream os = new FileOutputStream(file);
entity.writeTo(os);
long stop = System.nanoTime();
long contentLength = file.length();
long diff = stop - start;
System.out.printf("Duration: %d ms%n",
TimeUnit.NANOSECONDS.toMillis(diff));
System.out.printf("Size: %d%n", contentLength);
float speed = contentLength / (float) diff * (1_000_000_000 / 1_000_000);
System.out.printf("Speed: %.2f MB/s%n", speed);
}
After at least 10 repetions I see that the 182 MB file is download
within 24 000 ms with about 8 MB/s max. I cannot top that.
I have tried this over and over again with curl and see that curl is
able to saturate the entire LAN connection (100 Mbit/s).
My tests are done on Windows 7 64 bit, JDK 7u67 32 bit.
Any idea what the bottleneck might me?
Downloading the same file locally with HttpClient gives me 180 MB/s, so
this should be a problem.
Michael
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