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Subject: Re: PostgreSQL+DTrace on FreeBSD
From: Mark Johnston <markj@freebsd.org>
To: "Sevan / Venture37" <venture37@gmail.com>
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On Tue, Aug 6, 2013 at 2:20 PM, Sevan / Venture37 <venture37@gmail.com> wrote:
> On 30/07/2013 07:32, Mark Johnston wrote:
>>
>> Sweet! Let me know if you have problems using them - I only did some
>> basic sanity testing.
>
>
> Hi Mark,
> I don't see the probes on r253997 again.

What have you done since you last saw the probes? Reboot? Restart postgres?

If you rebooted, you'll need to change the mode on /dev/dtrace/helper again,
and the mode needs to be correct before postgres starts. You can set the
mode in /etc/devfs.conf I guess, but ensure that the DTrace modules are already
loaded when rc runs (i.e. by adding dtraceall_load="YES" to your loader.conf).