BOSH is an open source tool for release engineering, deployment, lifecycle management, and monitoring of distributed systems. BOSH can provision and deploy software over hundreds of VMs. It also performs failure recovery and software updates with zero-to-minimal downtime.
Apache JMeter™ is open source software, a 100% pure Java application designed to load test functional behavior and measure performance. It was originally designed for testing Web Applications but has since expanded to other test functions. JMeter may be used to test performance both on static and dynamic resources, Web dynamic applications. It can be used to simulate a heavy load on a server, group of servers, network or object to test its strength or to analyze overall performance under different load types.
Tornado for Apache JMeter™, is a BOSH release for Apache JMeter ™. It simplifies the usage of JMeter™ in distributed mode, making it easier to perform distributed load/stress testing on multiple IAAS offerings.
Note: Apache™, Apache JMeter™ and JMeter™ are trademarks of the Apache Software Foundation (ASF).
Note: This software is NOT associated with Apache JMeter™ software or the ASF.
This mode is used when the collection of the results for a JMeter™ plan execution is necessary. It works by spinning
n number of VMs that will act as JMeter™ workers. Those VMs will run JMeter™ in server mode, and patiently wait for an execution plan to be delivered to them.
When all the workers are up, a BOSH errand can be manually triggered where it will send the execution plan to the workers, waits for them to finish execution, collect the results, and download these results to the users local machine.
Detailed Steps :
nnumber of VMs will be created, each running a jmeter™ worker. Each worker will wait and listen for commands to be sent.
This mode is more suitable in the scenario where the simulation of large number of active users is more important than collecting the results logs; for example, detecting the behaviour of an application under continuous heavy traffic.
How it works is by spinning
n number of VMs, each provided the same JMeter™ execution plan. Then each JMeter™ instance will loop indefinitely (the JMeter™ plan should be set to loop indefinitely when created) targeting the requested URL. You can tune the number of working VMs on the fly through BOSH; by utilizing
bosh stop and
bosh start commands, or by changing the number of instances and deploying again.
Detailed Steps :
nnumber of instances
bosh startto tune the number of JMeter™ plans working.
This mode is useful in the scenario where the operator already has monitoring software for the target application and want to see the behaviour of it under huge loads.