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Date:      Wed, 17 Mar 2010 10:12:56 -0400
From:      Alejandro Imass <ait@p2ee.org>
To:        FreeBSD-questions@freebsd.org
Subject:   Re: Kernel dump crash
Message-ID:  <a14066a01003170712v64347039m8f014666d80d38f8@mail.gmail.com>
In-Reply-To: <a14066a01003170704y19097705ya6ec05cce4815824@mail.gmail.com>
References:  <c0e6d201003160513p50f6f277k88bb6e3241ca5706@mail.gmail.com> <c0e6d201003170103ra227db1m116bb8eb14a65b67@mail.gmail.com> <a14066a01003170704y19097705ya6ec05cce4815824@mail.gmail.com>

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On Wed, Mar 17, 2010 at 10:04 AM, Alejandro Imass <ait@p2ee.org> wrote:
> On Wed, Mar 17, 2010 at 4:03 AM, Glenn Camilleri <glenncam@gmail.com> wro=
te:
>> Hi,
>>
>>
>>
>> I have some processes and programs that are custom made to run on FreeBS=
D. I
>> suspect some poor implementation of tcp in these programs, but don=92t h=
ave
>> the real proof.
> [...]
>>
>> Can you kindly advise ?
>>
>
> Using the core dump is wise but ktrace will probably be easier. Just
> run like this ktrace [program] 2>&1 | less
> You should be able to spot the precise failing system call quite easily
>

Ooops, my Linux background betrayed me, sorry (was thinking of
strace). ktrace will produce a file which you later need to analyze
with kdump. Running is the same but forget the output redirection,
there is a -f switch to specify the outfile.

> Best,
> Alejandro Imass
>
>>
>>
>> BR,
>>
>> Glenn Camilleri
>>
>> --
>> Best Regards,
>> Glenn Camilleri
>>
>>
>>
>> --
>> Best Regards,
>> Glenn Camilleri
>> _______________________________________________
>> freebsd-questions@freebsd.org mailing list
>> http://lists.freebsd.org/mailman/listinfo/freebsd-questions
>> To unsubscribe, send any mail to "freebsd-questions-unsubscribe@freebsd.=
org"
>>
>



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