profiler

I've been trying to use Firebug's profiler to better understand the source of some JavaScript performance issues we are seeing, but I'm a little confused by the output. When I profile some code the profiler reports Profile (464.323 ms, 26,412 calls) . I suspect that the 464.323 ms is the sum of the execution time for those 26,412 calls. However, when I drill down into the detailed results I see individual results with an average execution time greater than 464.323 ms, e.g. the result with the highest average time reports the following details: Calls: **1** Percent: **0%** Own Time: **0.006 ms*

Are there any good, free (or at least reasonably cheap) profilers for at least native C++ that can integrate with Visual Studio 2008 Professional? I looked at DevPartner community edition but they seem to only support Visual Studio 2003 and Visual Studio 2005. Failing that are there any good free/cheap profilers in general that I can get working with VS with relativly little friction? At my workplace we use AQTime . It's not free ($600 or 30-day trial) but it really works wonders. I like it because it can handle both native (we do C++) and managed code. It works in stand-alone mode, integrates

Does anyone have experience profiling a Python/SQLAlchemy app? And what are the best way to find bottlenecks and design flaws? We have a Python application where the database layer is handled by SQLAlchemy. The application uses a batch design, so a lot of database requests is done sequentially and in a limited timespan. It currently takes a bit too long to run, so some optimization is needed. We don't use the ORM functionality, and the database is PostgreSQL. Sometimes just plain SQL logging (enabled via python's logging module or via the echo=True argument on create_engine() ) can give you an

A Hacker's Tale The date is 12/02/10. The days before Christmas are dripping away and I've pretty much hit a major road block as a windows programmer. I've been using AQTime, I've tried sleepy, shiny, and very sleepy, and as we speak, VTune is installing. I've tried to use the VS2008 profiler, and it's been positively punishing as well as often insensible. I've used the random pause technique. I've examined call-trees. I've fired off function traces. But the sad painful fact of the matter is that the app I'm working with is over a million lines of code, with probably another million lines

Which profiler do you use for Fortran code base with MPI in it? gprof doesn't seem to be working correctly. Sun Studio Analyzer only returns the timings for the C/C++ system calls and none of the fortran functions appear. There are a number of performance analysis tools specialized for Parallel/MPI Programs, such as: Score-P , which works with a number of different Analysis tools, e.g. Cube , Vampir HPCToolkit uses sampling only, so you do not have to recompile your application Tau At first they may not be as simple to use simple to use, but they provide much more help to investigate the