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Saturday, October 06, 2007

StreamCruncher 2.2 Release Candidate

The 2.2 Release Candidate is now available. This has some important performance related changes over the 2.2 Beta version. Over the past few releases, I've spent a considerable amount of time working on parts of the Kernel to perform end-to-end processing without having to go the Database. This version performs Correlation Query processing and single Stream Query processing entirely in Memory. As a result, there are some things that don't work - like the "Order by" and "Group by" clauses. You might call it laziness, but there's only so much time I can spend on this, what with a day job and all.

Anyway, the performance has shot up to very respectable figures. The CorrelationPerfTest that I spoke about in my previous blog can now process a total of 168,000 Events per second on a single Processor, dual Core 1.8 GHz Centrino with 2 GB Memory. The Test has 3 Correlation Queries. Two of them correlate 3 Streams each and one Query correlates 2 Streams.

It's been a long journey. I'm so glad that SC can do this many Events per second now. I remember being quite worried a year and a half ago, when it could not do more than a few hundred events per second.