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Re: Skipped Probes for userspace constructors, Why?
- From: fche at redhat dot com (Frank Ch. Eigler)
- To: "Hassan Radwan" <HassanR at avi dot com>
- Cc: <systemtap at sourceware dot org>
- Date: Sun, 23 Nov 2008 12:07:01 -0500
- Subject: Re: Skipped Probes for userspace constructors, Why?
- References: <2131D39DDCC1CF4EBBDBA9994701D921B5974F@hicksville.avi.com>
"Hassan Radwan" <HassanR@avi.com> writes:
> [...]
> I have a simple script written to try and understand when the
> constructor is called for the classes in an application. [...]
> probe process("a.out").function("FooConstructor") [...]
> [...]
> $ sudo stap foo.stp -c a.out
> WARNING: Number of errors: 0, skipped probes: 195
If able, build yourself a new copy of systemtap out of the git tree,
and run your test with the "-t" (timing) flag. You should get more
detailed counts about what skipped. I believe there was also a bug
fixed related to the new MAXUPROBES configurable, which may have
enabled a much smaller number of uprobes than intended.
- FChE