adding benchmark for each id implementation (#104)

* adding benchmark for each id implementation

* deleting unneccesary png files

* adding benchmark details in readme.md

* updating readme

* updating readme

* restructuring folder

Author: nsahai8

README.md

@@ -60,3 +60,5 @@ In case your apps are already wired in with some kind of instrumentation library
 ## License
 This project is licensed under the Apache License v2.0 - see the LICENSE.txt file for details.
 
+## Benchmarks
+We have published our benchmarks [here](benchmark/README.md)

benchmark/README.md

@@ -0,0 +1,27 @@
+# Benchmarks
+
+
+One of the deciding factor for performance of haystack client is the Id Generation Process.There are more than one way to implement the Id generator for traces and spans. We have added three implementations : LongId Generator(Default), RandomUUID Generator, TimeBasedUUID Generator. The Id Generators were implemented based on uniqueness and performance.For eg:  Long ID Generator will give you less assurance for uniqueness as compared to UUID implementations, while the performance of Long ID generator will better. You are also free to add your own ID generator implementations.
+We have benchmark the performance of client with each Id Generator Implementations:
+
+### Using Long-ID Implementation
+![Long-ID Implementation](images/longIDjmhvisulaizer.png)
+
+### Using Random-UUID-ID Implementation
+![Long-ID Implementation](images/randomuuid.png)
+
+### Using TimeBased-UUID-ID Implementation
+![Long-ID Implementation](images/timebaseduuid.png)
+
+
+## To Measure Performance of client
+
+To measure the performance of the client, you would need to clone: https://github.com/gsoria/opentracing-java-benchmark/tree/master/opentracing-benchmark-simple-java. Once this is complete, update haystack.version in pom.xml with the current version of your haystack client.
+Run the following commands (inside on this specific project)
+
+```bash
+mvn clean install
+java -jar target/benchmarks.jar
+```
+
+Once you are done. Use [JMH-visualizer(Online version)](http://jmh.morethan.io/) to present the benchmark results.