Date: Mon, 18 Jun 2007 15:37:11 +0200 From: Roman Divacky <rdivacky@freebsd.org> To: Garrett Cooper <youshi10@u.washington.edu> Cc: hackers@freebsd.org Subject: Re: Making sense of ktrace(1) output Message-ID: <20070618133711.GA94692@freebsd.org> In-Reply-To: <46764865.9030203@u.washington.edu> References: <467636C0.6040604@u.washington.edu> <20070618081532.GI1181@turion.vk2pj.dyndns.org> <46764865.9030203@u.washington.edu>
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On Mon, Jun 18, 2007 at 01:55:01AM -0700, Garrett Cooper wrote: > Peter Jeremy wrote: > >On 2007-Jun-18 00:39:44 -0700, Garrett Cooper <youshi10@u.washington.edu> > >wrote: > > > >>However, I was able to get ktrace output. The only problem is that > >>ktrace(1) apparently outputs only in binary, instead of plaintext output. > >>Can I convert it to plaintext somehow and process it? > >> > > > >kdump(1) > > > > > grazi to all that replied -- that did the trick :). > > Now, note to self.. never ever do analysis on something so large as > pkg_add thunderbird. Really, really bad idea :).. > > I'll make up some Perl scripts, produce some histograms, and see if I > can better trace down this bottleneck. well.. instead of using ktrace I'd suggest building profiled pkg_add and see that way where the time is spent. ktrace is great if you dont have the source code... but you do :) roman
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