[dtrace-discuss] Instrumenting Sendmail with DTrace

[Nik Clayton]

Those of you running Sendmail on Solaris 10 (or later) might be 
interested in some work that I'm doing to add DTrace instrumentation to 
Sendmail.

The work's got to the point where it's starting to produce 
instrumentation data.

The whole thing is being written up at http://jc.ngo.org.uk/blog/.  If 
you just want to dive in and see some figures then the four most recent 
posts are a good place to start.

http://jc.ngo.org.uk/blog/2006/08/04/day-26-of-60-instrumenting-sendmail-queue-file-creation-pt-1/

http://jc.ngo.org.uk/blog/2006/08/05/day-27-of-60-instrumenting-sendmail-queue-file-creation-pt-2/

http://jc.ngo.org.uk/blog/2006/08/05/day-27-of-60-instrumenting-sendmail-queue-file-creation-pt-3/

http://jc.ngo.org.uk/blog/2006/08/06/day-28-of-60-instrumenting-sendmail-queue-file-creation-pt-4/

You can see the code changes that I've made to Sendmail at:

http://jc.ngo.org.uk/svnweb/jc/log/nik/sendmail/branches/8.13.7.2-dtrace/

Test results, DTrace scripts, and other bits and pieces are at:

http://jc.ngo.org.uk/svnweb/jc/browse/nik/dtrace4sendmail/trunk/

Hope that's useful.

N