Date: Sat, 26 Jun 1999 17:11:13 +0100 (BST) From: Doug Rabson <dfr@nlsystems.com> To: Poul-Henning Kamp <phk@critter.freebsd.dk> Cc: Hidetoshi Shimokawa <simokawa@sat.t.u-tokyo.ac.jp>, pb@fasterix.freenix.org, freebsd-current@FreeBSD.ORG Subject: Re: kernel profiling Message-ID: <Pine.BSF.4.05.9906261709440.80685-100000@herring.nlsystems.com> In-Reply-To: <21070.930412938@critter.freebsd.dk>
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On Sat, 26 Jun 1999, Poul-Henning Kamp wrote: > In message <Pine.BSF.4.05.9906261616390.80685-100000@herring.nlsystems.com>, Do > ug Rabson writes: > > >> You can enable kernel profiling by configure kernel with `-p' or '-pp' > >> option. See config(8) and kgmon(8) for detail. > >> > >> I have a patch for FreeBSD/alpha to support kernel profiling. > > > >Another excellent alternative for kernel profiling is iprobe. > > Not to mention compiling with "-g -a" and using kernbb to get Basic > Block profiling. I have not tried that. Iprobe is a nice low-overhead flat profiler which can correlate time spent in both the kernel and user-mode processes. If you don't need call-graph information and are using an alpha, it is an excellent tool. -- Doug Rabson Mail: dfr@nlsystems.com Nonlinear Systems Ltd. Phone: +44 181 442 9037 To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
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