[rds-devel] rds-tools pull request

[Andy Grover]

Or Gerlitz wrote:
>>      Add a first cut at a RDS SystemTap script

> Do you know if SystemTap is non-intrusive in the sense that it can be used
> for "real-time" performance monitoring, that is collection of data in the
> fast path without notable performance impact?

That certainly seems to be its goal. If we didn't already have
rdsdebug() and rds_stats in place, it might have been good for those
areas. I think stap's probe statistics histograms and queue statistics
could also be very powerful, but I haven't yet had occasion to put them
to use.

Regards -- Andy