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From: fche@redhat.com (Frank Ch. Eigler)
To: "Hassan Radwan" <HassanR@avi.com>
Cc: <systemtap@sourceware.org>
Subject: Re: Skipped Probes for userspace constructors, Why?
Date: Sun, 23 Nov 2008 17:07:00 -0000	[thread overview]
Message-ID: <y0m3ahi9xsa.fsf@ton.toronto.redhat.com> (raw)
In-Reply-To: <2131D39DDCC1CF4EBBDBA9994701D921B5974F@hicksville.avi.com> (Hassan Radwan's message of "Mon, 10 Nov 2008 14:57:11 -0500")

"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

      reply	other threads:[~2008-11-23 17:07 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-11-10 19:58 Hassan Radwan
2008-11-23 17:07 ` Frank Ch. Eigler [this message]

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