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Date: Mon, 22 Jun 2009 22:50:00 -0000
Message-ID: <7230133d0906221549r56981795sd907a5ea3a18693c@mail.gmail.com>
Subject: Re: Howto: Profiling GCJ code?
From: Bryce McKinlay <bmckinlay@gmail.com>
To: =?ISO-8859-1?Q?Patrick_Sch=E4fer?= <ps@ekse.de>
Cc: java@gcc.gnu.org, Ian Rogers <ian.rogers@manchester.ac.uk>
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On Mon, Jun 22, 2009 at 8:25 PM, Patrick Sch=E4fer<ps@ekse.de> wrote:
> thank you for the help!
>
> oprofiler is quite troublesome to build on my mac os x as there a lots of
> libraries missing. currently "bfd" (-lbfd) is missing.
>
> therefor I am still not sure if java.nio is the main reason for the
> performance bottleneck but apache mina is also capable of using APR as a
> transport layer (instead of java.nio). =A0that could improve overall
> performance too.

oprofile requires explicit kernel support to work, and as far as I
know, it only works on Linux.

In OS X you could try Shark, which comes with Apple's developer tools.
I don't know how well it plays with libgcj, but it's probably worth a
shot.

Bryce