I've seen this question asked a few times in this forum but I don't seem to ever see a clear answer and/or the original poster never returns after somebody answers their question.

I have been asked how we make RRD show the actual max values/peaks instead of averaging them and have yet to figure out how this is done.

Let me explain the scenario.

I have an application who's data rate I'm trying to monitor.  I have a COMMAND datasource checking this every 60s.  It's command cycletime is 60s in zproperties and the datasource itself.  The consolidation function I've chosen is MAX.  I've added --step=60 to the custom graph commands.

The last step in this process was I changed the default RRA values for this collector to:

RRA:MAX:0.5:1:43200

So if I understand this correctly, I'm saying keep the MAX of 1 cycle, 43200 times..  which is approximately 30 days.

I've blown away the existing RRD file and no matter what I do I never see the real value.

I saw in a mailing list post for RRD someone mentioned what I'm looking for is 1-second precision/stepping.  Is that really what I'm after here?

Has anyone figured out how/if this is possible?

Thanks,

John