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Date: Mon, 18 Jun 2007 15:37:11 +0200
From: Roman Divacky <rdivacky@freebsd.org>
To: Garrett Cooper <youshi10@u.washington.edu>
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Cc: hackers@freebsd.org
Subject: Re: Making sense of ktrace(1) output
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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