This is the mail archive of the
systemtap@sourceware.org
mailing list for the systemtap project.
Re: [PATCH v4 2/3] Support for perf to probe into SDT markers:
- From: Mark Wielaard <mjw at redhat dot com>
- To: Pekka Enberg <penberg at iki dot fi>
- Cc: Masami Hiramatsu <masami dot hiramatsu dot pt at hitachi dot com>, "Frank Ch. Eigler" <fche at redhat dot com>, Pekka Enberg <penberg at kernel dot org>, Hemant Kumar <hkshaw at linux dot vnet dot ibm dot com>, LKML <linux-kernel at vger dot kernel dot org>, Srikar Dronamraju <srikar at linux dot vnet dot ibm dot com>, Peter Zijlstra <peterz at infradead dot org>, Oleg Nesterov <oleg at redhat dot com>, hegdevasant at linux dot vnet dot ibm dot com, Ingo Molnar <mingo at redhat dot com>, anton at redhat dot com, systemtap at sourceware dot org, Namhyung Kim <namhyung at kernel dot org>, aravinda at linux dot vnet dot ibm dot com, dsahern at gmail dot com, "yrl dot pp-manager dot tt at hitachi dot com" <yrl dot pp-manager dot tt at hitachi dot com>
- Date: Thu, 31 Oct 2013 11:54:46 +0100
- Subject: Re: [PATCH v4 2/3] Support for perf to probe into SDT markers:
- Authentication-results: sourceware.org; auth=none
- References: <20131023044511 dot 1886 dot 82571 dot stgit at hemant-fedora> <20131023050502 dot 1886 dot 15779 dot stgit at hemant-fedora> <CAOJsxLFKm3TxeTmGjbpr1r4sZ8fHcM481-5BM_Cq0J8hhtvBqQ at mail dot gmail dot com> <y0mbo2cs2oa dot fsf at fche dot csb> <5270D9F7 dot 3090105 at hitachi dot com> <5270F2DE dot 6040505 at iki dot fi>
On Wed, 2013-10-30 at 13:51 +0200, Pekka Enberg wrote:
> On 10/30/13 12:05 PM, Masami Hiramatsu wrote:
> > To find all system libraries, we can use ldconfig.
> >
> > $ ldconfig --print-cache
> >
> > shows what dynamic libraries will be loaded. On my own laptop (running
> > ubuntu13.04) shows ~1000 libs.
>
> Good point. That definitely narrows down the scanned set.
It is fast. But that would miss the various libjvm.so variants for
example. Or other programs, like libreoffice, which have SDT probes in
their internal shared libraries that aren't in the default ldconfig
paths.
Cheers,
Mark