I've tried almost every settings just like you did guys. But I still get memory overloaded after a few weeks of monitoring.

Here's my setup.

I have 3 pings running at the same time on the same machine.
All three have the same settings:
#Sample to include: 5
Trace interval: 1 second
Max. Samples in memory: 86400 (24 hours)
Autosave : every 4 hours
Filename: $host $date $Hour00

After two weeks the computers memory was at 300 Mo while physical memory is 128Mo.
When I end Ping plotter's instances memory drops to 150Mo.
I then restart ping plotter with the latest file saved, and memory raises up to 160Mo.

So I don't think this ping plotter is doing good usage of this memory. There is something wrong I guess.

Thanks.

Pascal Bellerose
It Site Manager
Cascades, Fine Papers Group inc., Fibres Breakey division