If there are limits (and I guess C's pointer type would be), they're in places that no one has ever been able to test - i.e. you run out of addressable RAM long before you run out of possible pointer values.
The key structure is HostTraffic, which is a hash table, with linked lists handling collisions. It defaults to 16K and in a few cells you might typically have chains of 10-20 hosts. If you monitor a couple of /8s you probably get more collisions. Perhaps Benny would be willing to post his statistics? He routinely runs the largest installation anyone has publicly posted about, monitoring about 330K hosts. -----Burton -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Cole Sent: Wednesday, November 16, 2005 2:28 AM To: [email protected] Subject: RE: [Ntop-dev] Ntop Limits Yeah. I have read those, my question isnt about how much memory it uses. Its about the limit of the data types or data structures if there is one? Does the data get truncated after a certain point ? Regards /Cole -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Burton Strauss Sent: Wednesday, November 16, 2005 1:18 AM To: [email protected] Subject: RE: [Ntop-dev] Ntop Limits Read docs/FAQ - there are discussions about how ntop uses memory. It's the # of hosts, not the amount of traffic that matters for memory usage. -----Burton -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Cole Sent: Tuesday, November 15, 2005 1:41 PM To: [email protected] Subject: [Ntop-dev] Ntop Limits Hi. Im running Ntop on FreeBSD 4.11. I wanted to know if there is a limit to the amount of data/traffic that ntop can keep hold of. Like, does the amount of traffic or information or data that ntop can hold depend on the data types used or data structures used? If Ntop was running on a network with a few servers that generate between 6-10 terabytes of data/traffic a day, would Ntop start to truncate the information/data somewhere? Or is the only limitation based on the max amount of memory that ntop is allowed to use, or that the box itself has? Regards /Cole _______________________________________________ Ntop-dev mailing list [email protected] http://listgateway.unipi.it/mailman/listinfo/ntop-dev _______________________________________________ Ntop-dev mailing list [email protected] http://listgateway.unipi.it/mailman/listinfo/ntop-dev _______________________________________________ Ntop-dev mailing list [email protected] http://listgateway.unipi.it/mailman/listinfo/ntop-dev _______________________________________________ Ntop-dev mailing list [email protected] http://listgateway.unipi.it/mailman/listinfo/ntop-dev
