Hey,
It looks like this needs to be rewritten. There are a lot of factors that
the code doesn't account for (like memory allocation). You should consider
rewriting your benchmark with a benchmarking harness like JMH or Caliper.
On Monday, May 15, 2017 at 11:57:11 AM UTC-7, Dharshana Ratnayake wrote:
>
>
> Hi guys..
>
> Ive very recently discovered the world of gRPC and im super enthusiastic
> about how i can use it.. Just so i can understand the potential benefits. i
> set up the following benchmark test..
>
> track 1: JSON over http1 using a spring boot app running on a google
> compute engine.
>
> public static void main(String[] args){
> HttpClient httpClient = HttpClientBuilder.create().build();
>
> ObjectMapper mapper = new ObjectMapper();
>
> try {
> long startTime = System.currentTimeMillis();
> for(int i=0;i<1000;i++) {
> MessageRequest value = new MessageRequest(new
> CharacterMessage(UUID.randomUUID(), new Vector(10, 20, 30)));
>
> HttpPost request = new HttpPost("http://[google compute engine
> ip]:8080/character");
> StringEntity params = new
> StringEntity(mapper.writeValueAsString(value));
> request.addHeader("content-type", "application/json");
> request.addHeader("Accept", "application/json");
>
> request.setEntity(params);
> HttpResponse response = httpClient.execute(request);
> BufferedReader br = new BufferedReader(new
> InputStreamReader((response.getEntity().getContent())));
>
> String output;
> StringBuilder sb = new StringBuilder();
> while ((output = br.readLine()) != null) {
> sb.append(output);
> }
> MessageResponse mr = mapper.readValue(sb.toString(),
> MessageResponse.class);
> System.out.println("Output from Server .... \n");
> System.out.println(mr.getCharacterMessage().getPossition());
> }
>
> System.out.println("all
> done!!:"+(System.currentTimeMillis()-startTime));
> }catch (Exception ex) {
> ex.printStackTrace();
> }
>
>
> track 2: proto buffer over http2 using grpc server running on google
> compute engine
>
> public static void main(String[] args){
> ManagedChannel channel = ManagedChannelBuilder
> .forAddress("[googgle compute engine ip]", 8080)
> .usePlaintext(true)
> .build();
>
> CharacterServiceGrpc.CharacterServiceBlockingStub stub =
> CharacterServiceGrpc.newBlockingStub(channel);
> long startTime = System.currentTimeMillis();
>
> for(int i=0;i<1000;i++) {
> MessageResponse response = stub.updateCharacter(
> MessageRequest.newBuilder()
> .setCharacterMessage(
> CharacterMessage.newBuilder()
>
> .setId(ByteString.copyFrom(asBytes(UUID.randomUUID())))
> .setPosstion(Vector.newBuilder()
>
> .setX(10).setY(20).setZ(30).build())
> .build())
> .build());
>
> System.out.println("response:" +
> response.getCharacterMessage().getPosstion());
> }
>
> System.out.println("finished message
> transfer:"+(System.currentTimeMillis()-startTime));
> }
>
> public static byte[] asBytes(UUID uuid) {
> ByteBuffer bb = ByteBuffer.wrap(new byte[16]);
> bb.putLong(uuid.getMostSignificantBits());
> bb.putLong(uuid.getLeastSignificantBits());
> return bb.array();
> }
>
>
> So i ran both cases (each does a 1000) request from my place in New
> Zealand to us-west. I was obviously expecting the gRPC to do better.. But
> to my surprise (and disappointment) it didn't.. The JSON/HTTP1 completed in
> 349270 milliseconds but the gRPC scenario took 364541 milliseconds to
> finish..
> Can anyone explain what might be going on here?
> I would have thought because http being binary more easy to parse and
> being more compact that it would do better than REST.. Maybe spring-boot is
> doing something clever? I do know that on a case like this you would use a
> stream and that finishes in 1974 milliseconds.. But i would have through
> that just call to call gRPC would do faster as well.
>
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