Hi all,
triggered by the new mod_systemd I drafted a patch to enhance the
monitoring data it provides during the monitor hook run.
Currently it publishes important data, like idle and busy slots and
total request count, but also not so useful info like requests/second
and bytes/second as a long term average (since start). These two figues
tend to become near constant after a longer time of operation.
Since the monitor hook of the module always seems to run in the same
(parent) process, it is easy to remember the previous request and byte
count data and average only over the last monitor hook interval. This
should give more meaningful data. And is a change local to mod_systemd.
In addition we have a third metric available in the scoreboard, namely
the total request duration. From that we can get the average request
duration and the average request concurrency. This part also needs a
change to the sload structure. Maybe we need a minor MMN bump for that.
I scetched a patch under
home.apache.org/~rjung/patches/httpd-trunk-mod_systemd-interval-stats.patch
Any comments, likes or dislikes?
Thanks and regards,
Rainer
