From: compudj@krystal.dyndns.org (Mathieu Desnoyers)
Subject: [ltt-dev] Trouble tracing my application for PowerPC board
Date: Mon, 14 Feb 2011 23:34:46 -0500 [thread overview]
Message-ID: <BLU0-SMTP2012D4A14C201DFD8C2D4496D30@phx.gbl> (raw)
In-Reply-To: <841342.55407.qm@web113101.mail.gq1.yahoo.com>
* Srivatsan Vijayaraghavan (srivatsanvijayaraghavan at yahoo.com) wrote:
> I used ltib to cross compile and build liburcu and libust on my target board (for powerpc). Everything went smooth with few glitches which were sorted out, but when I tried to trace my application by invoking it from usttrace (usttrace ./testust), I wasn't able to get beyond this message
> ??? /root/.usttracers/...../ust-consumerd.log - No such file or directory
>
> I tried recording the trace manually when ust-consumerd failed in epoll_create().
> So I built the kernel with CONFIG_EPOLL support, but that did not help. I still get the same /root/.usttracers/..../ust-consumerd.log - No such file or directory
>
> ---testust.cpp---
> #include <ust.marker.h>
> int main(..)
> {
> ?? trace_mark(main,myevent,"%d", getpid());
> }
which user ID are your running your application as ?
What's the value of your $HOME ?
It looks like ust is unable to create the directories/files needed to
write the log file. It looks like an access right problem
Mathieu
>
> Thanks,
> Srivatsan V
>
>
>
>
>
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--
Mathieu Desnoyers
Operating System Efficiency R&D Consultant
EfficiOS Inc.
http://www.efficios.com
prev parent reply other threads:[~2011-02-15 4:34 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-02-15 4:19 Srivatsan Vijayaraghavan
2011-02-15 4:19 ` Srivatsan Vijayaraghavan
2011-02-15 4:19 ` Srivatsan Vijayaraghavan
2011-02-15 4:34 ` Mathieu Desnoyers [this message]
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