From: Jiri Olsa <jolsa@redhat.com>
To: Jean Pihet <jean.pihet@linaro.org>
Cc: David Ahern <dsahern@gmail.com>, linux-kernel@vger.kernel.org
Subject: Re: Fwd: perf: callchain feature on ARM - question about libunwind API
Date: Fri, 30 Aug 2013 13:56:32 +0200 [thread overview]
Message-ID: <20130830115632.GB9218@krava.brq.redhat.com> (raw)
In-Reply-To: <20130830114903.GC1023@krava.brq.redhat.com>
On Fri, Aug 30, 2013 at 01:49:03PM +0200, Jiri Olsa wrote:
> On Thu, Aug 29, 2013 at 07:15:00PM +0200, Jean Pihet wrote:
>
> SNIP
>
> >
> > The problem is that it is slow as hell (couple of minutes to report
> > the callchain from a simple test app ;-|). I will look at the sampling
> > rate and the caching next.
>
> FYI there's elfutils alternative grewing now via libdw providing
> API to do the 'remote unwind' as in libunwind. I'm not completely
> sure, but I think it should support both .eh_frames and .debug_frames.
ok, I checked and it does ;)
prev parent reply other threads:[~2013-08-30 11:56 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <CAFrcx1n5eA4zz+nUhraE_fi_Usc=PCZTC=RCT=S285K4=jqHSg@mail.gmail.com>
2013-08-27 11:58 ` Jean Pihet
2013-08-27 16:12 ` David Ahern
2013-08-29 13:52 ` Jiri Olsa
2013-08-29 17:15 ` Jean Pihet
2013-08-30 11:49 ` Jiri Olsa
2013-08-30 11:56 ` Jiri Olsa [this message]
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