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psa.exe partial tree sample

Process Status Analysis – the first steps

I am pleased to announce my first cross-platform and open source project, the Process Status Analysis tool, available on GitHub.

The Process Status Analysis (psa) is a command line tool that offer some Operating System processes analysis features:
– Get all processes loaded in memory information
– Get process only used memory
– Print processes tree
– Top most “expensive” processes
– Redirect output to a file

Getting Table’s indexes experiences – workaround

Trying to get table indexes information in SQL Server 2012 I identified a strange situation within a specific method that I was using so long but it was not acting as expected in one situation.

Usually, I got the right information about indexes but in one situation I encounter a strange behavior. It’s about having a clustered index into a scenario.

I have a table that contains two indexes referenced to some fields: IndexField_1 and IndexField_3 mapped over int, NULL fields. When IndexField_1 is Non-Unique, Non-Clustered and IndexField_3 is Clustered index I get the right information.
But if the index IndexField_1 is Clustered and the IndexField_3 is Non-Unique, Non-Clustered I get no information about IndexField_1 index (eg. szIdxName and szIdxColName are “” and their length is -1 that means SQL_NULL_DATA). Within while loop, with the next iteration I get correct information about the second index IndexField_3.

Adventures with _chkstk

Called by the compiler when you have more than one page of local variables in your function.
_chkstk Routine is a helper routine for the C compiler. For x86 compilers, _chkstk Routine is called when the local variables exceed 4K bytes; for x64 compilers it is 8K.

That’s all that you get from _chkstk()’s msdn web page. Nothing more…

pre vs. post increment operator – benchmark

A recent Visual C++ team’s comment on reminded me a hot topic that exists in C++ programming world: there is a long discussion of using pre versus post increment operators, specially, for iterators. Even me I was witness to a discussion like this. The discussion started from a FAQ written by me on

Base on that VC++ team’s tweet related to’s research I decided to create my own benchmark base on single and multicore architectures. For those that don’t know Viva64 is a company specialized on Static Code Analysis.
Starting from their project I extended the tested for other STL containers: std::vector, std::list, std::map, and std::unordered_map (VC++ 2010 hash table implementation).
For parallel core tests I used Microsoft’s new technology called Parallel Pattern Library.