Tracing Pthread calls

I'm interested in tracing pthread calls in linux. I have found this tool "http://nptltracetool.sourceforge.net/" but unfortunately it does not work with 64 bit architecture which I have. Does anybody know a tool or method which will do it for me?

There are lots of tools for tracing pthread calls:

• Linux Trace Toolkit
• EZTrace
• VampirTrace

I have written a small tool called mutextrace; this one has a focus on mutex debugging and cannot do much, but should give you a good starting point.

I also accept patches or offers to take over the package and do something sensible with it, as my time is rather limited at the moment (so I spend it on SO).