We are using jmeter to stress test the service. The jmeter configuration file can be found here. One can use any url list saved into a .csv file as an input to the above configuration scheme.
Download Jmeter, and run it using script in installdir/bin. After that, just import the above configuration file to complete the test setup.
As discussed in Configuration-files-and-path-scheme, performance logs are saved in metadataPerf.log files.
These logs can be input to the ServicePerfLogAnalyzer and will output:
Throughput: no. of requests served per second.
Avg. Latency: avg. time taken for a request.
Success Rate: percentage of requests successfully served (return code 200 OK)
There are several other useful metrics like avg. latency without download waiting time, component-wise time taken, total time taken, total request served which can be of immense help in diagnosing the performance, accuracy, and reliability issues.