Systemtap and PHP? (was Re: Proposed F19 Feature: PHP 5.5 - To provide the latest PHP stack)

[David Malcolm]

On Tue, 2013-01-08 at 19:23 +0100, Tomasz Torcz wrote:
> On Tue, Jan 08, 2013 at 01:05:39PM -0500, David Malcolm wrote:
> > On Tue, 2013-01-08 at 10:34 -0500, Jaroslav Reznik wrote:
> > [...]
> > > = Features/Php55 =
> > > https://fedoraproject.org/wiki/Features/Php55
> > 
> > [...snip...]
> > > Dtrace enabled build 
> > 
> > As I understand it, Fedora has systemtap but not dtrace (/usr/bin/dtrace
> > is a shim to systemtap), so does this mean that *systemtap* static
> > probes will be available for use when tracing php?  If so, that sounds
> > great, but it would probably be best to spell that out on the feature
> > page.
> 
>   Systemtap is able to use dtrace probes, se the detailed desc. here:
> https://fedoraproject.org/wiki/Features/SystemtapStaticProbes#Detailed_Description

Yes - we did something similar for Python a while back [1] - but a
casual reader of the PHP 5.5 feature page wouldn't know this, or know
what it means, which is why I mentioned it.

[1]
https://fedoraproject.org/wiki/Features/SystemtapStaticProbes#Python_2