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Two talks in one: Source code profiling with Devel::NYTProf and application performance instrumentation with DashProfiler.
Come and see the amazing new NYTProf v2 profiler in action. Profiling your Perl source code has never been so accurate, so detailed, so insightful, or so pretty!
Statement-level profiling, subroutine level profiling, even block-level profiling (a first for any perl profiler). Subroutine call counting and timing per calling location. More accurate statement timing than any other profiler. Supports mod_perl 1 and 2. Richly annotated and cross-linked html reports. NYTProf v2 has all that and more!
Once you’ve optimized the code in development with NYTProf you can use DashProfiler in production to monitor it.
The performance of an application or service often depends on the performance of a few key external services, such as databases, network filesystems, DNS, web services, etc. How much time is spent waiting for those services? If your application gets slower, which services are contributing most to the slowness?
That’s just one possible application for DashProfiler.
DashProfiler provides a very lightweight and flexible mechanism to measure time spent in the code that’s most important to you, aggregated by context information that’s meaningful to you.
Built on the little-known but very powerful DBI::Profile core, DashProfiler makes it trivially easy to instrument a section of code: just add one function call.
Tim Bunce is best known as the author and maintainer of the Perl DBI module, the standard database interface for Perl since 1994. He has contributed to the development of the Perl language and many of its core modules, and was responsible for the 5.4.x series of maintenance releases.
As the founder and CTO of Data-Plan Services, he provides Perl, database, performance, and scaling consultancy services to an international client base. Prior to that we was Technical Director (CTO) of IG in the UK where he was awarded by British Telecom for his role in the rapid development of their Call Management Information service, a system implemented in Perl.
He is co-author, along with Alligator Descartes, of Programming the Perl DBI, the definitive book on DBI, published by O’Reilly Media.
A popular and effective speaker, he has delivered tutorials and sessions for many years at OSCON and other conferences and workshops.