--- In Firebird-Architect@yahoogroups.com, David Johnson
<d_johnson@c...> wrote:

>
> > Ann wrote:
> >

...

> Perhaps I'm being obtuse, but I don't see exactly where quotas would
> help. The ability for a developer to kill a query - absolutely, but
> what quota would you choose to limit?
>

I forgot to answer your question ...

Currently, we limit on CPU (the operating system does measure true CPU
- it obviously isn't a WIntel).

I am not sufficiently familiar with Firebird internals yet to have a
solid suggestion. Tentatively, I would suggest count of passes
through the main loop. Alternatively, chronological time spent in the
main loop, as measured with the high resolution timer (where
available). I have a DLL around here for capturing high resolution
timer on Intel boxes. Its overhead is measured at 0.002 milliseconds
per call on a 2 GHz Dell desktop. I have also seen something like it
compiled as a .so for linux.