XStream cStream

cStream collects real-time performance and consumption statistics of transactional workloads.

It is thus able to show information relating to what is really happening at the moment, without having to wait for extractions and re-elaborations that will take place the following day. Highlighting anomalous situations allows customers to obtain MIPS savings, to improve the efficiency of the applications and the quality of the software, in order to support the technical teams in troubleshooting.

cStream Mips consumption is limited because of the specificity of the solution. It only reaches a fraction of a percentage point for 24/7 monitoring. Advanced functions can be activated on-demand for a limited time (usually for few minutes a day) as well as deep profiling, detail consumption at program level and called/caller program tree. In this case consumption will be higher and it could reach 4-5% of consumption of monitored transactions alone.

The z/OS component of the solution consists of a series of Exits called by the operating system during the execution of transactions. By doing this, tracked data is sent to a web service on an open server and written to a No Sql database. cStream frontend then provides further processing of the data and its graphic and / or table representation. cStream is able to collect detail data of each transaction instance execution, representing everything that happens both analytically and graphically. For each execution, the sequence of programs run and the relations (link, call, xctl) between them is represented.