hc-httpclient-users mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Michael Osipov <micha...@apache.org>
Subject Cannot saturate LAN connection with HttpClient
Date Sat, 23 May 2015 20:09:57 GMT

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);
   long stop = System.nanoTime();
   long contentLength = file.length();

   long diff = stop - start;
   System.out.printf("Duration: %d ms%n", 
   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.


To unsubscribe, e-mail: httpclient-users-unsubscribe@hc.apache.org
For additional commands, e-mail: httpclient-users-help@hc.apache.org

View raw message