Re: unexpected Apache::VMonitor output

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Todd Finney wrote:
[...]
> Allow me to rephrase the question.  Looking at contemporaneous VMonitor 
> and ExtendedStatus reports (below), I don't know where to being 
> interpreting the differences between the two, or the fact that the 
> spurious processes show up in the former, but not the latter.
> 
> In the VMonitor listing, #11 and #16 are both supervise (daemontools) 
> processes.  Neither one of them appears in the ExtendedStatus listing, 
> though.  If VMonitor is getting its information from the scoreboard, and 
> ExtendedStatus isn't seeing them, where are they coming from?
> 
> VMonitor also isn't reporting any activity on children >13, whereas 
> ExtendedStatus is showing that they're in use.

Any chance you could compare the logic of mod_status and Apache::VMonitor 
and see why there is a difference? In order for me to debug that I need to 
be able to reproduce the problem. But it seems just fine (and it was like 
that for a quite a few years). I'd suspect that what you see is some 
process IDs that used to be use by Apache but now re-used by the OS, and 
the scoreboard gives the stale info. I see that mod_status has all kind of 
  freshness checks. May be Apache::VMonitor should do the same?

> One other question - In the VMonitor source, you have vhost information 
> disabled, and a comment that it's not available in the 1.3 scoreboard.  
> ExtendedStatus is reporting it, though.  Where is it getting it from, 
> and why can't VMonitor get to it.

I've just released Apache::Scoreboard 0.12 which exposes the vhost record 
for mod_perl 1, and the newly released Apache::VMonitor 2.02 uses that 
information.

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