Blog Entry of 2007-Feb-20 in PRTG 6
How RAM memory is allocated when using top lists in PRTG Traffic Grapher
When using Toplists in PRTG Traffic Grapher for Packet Sniffers or NetFlow Collectors you should be aware that it can take a considerable amount of memory.
This knowledgebase article "How RAM memory is allocated when using top lists in PRTG Traffic Grapher" explains some details.