1. Essentially none unless you enable the rrd plugin. 2. No. Read the paper @ SourceForge re RRDs.
You'll find that each individual RRD is fixed in size, but the number of RRDs ntop creates is totally dependent upon the number of hosts ntop sees and the traffic for those hosts (i.e. if ntop NEVER sees host 1.1.1.1 there are no RRDs for that. If ntop sees 1.1.1.1 but never sees HTTP traffic, then the http RRD is not created. But once ntop sees even one byte for http for 1.1.1.1, that RRD will exist forever). Thus, if disk space is constrained and old data has no value to you, you may want to create a cron-driven purge job to delete old RRDs. -----Burton -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Bahya NASSR EDDINE Sent: Friday, April 01, 2005 7:54 AM To: [email protected] Subject: [Ntop] Ntop: disc utilization Hi all, I am unable to find a concise description of the Ntop disc utilization. I have used Ntop to analyse my network traffic. However, I can't know where does Ntop exactly store data that it generates concerning network activity. I have read the "Effective Traffic Measurment Using ntop" document written by Luca Deri. I understood that Ntop stores hosts information in a large hash table and that it purges hosts' tables when necessary... I will be glad if you could answer the following two questions: 1- How mach disc space does Ntop need to be able to store information that it genarates concerning hosts and network traffic. 2- Is it possible to allow to ntop a fixed amount of disc space and to make it overwrite stored data if it needs more disc space than the allowed? Thank you Best regards Bahya __________________________________________________________________ D�couvrez le nouveau Yahoo! Mail : 250 Mo d'espace de stockage pour vos mails ! Cr�ez votre Yahoo! Mail sur http://fr.mail.yahoo.com/ _______________________________________________ Ntop mailing list [email protected] http://listgateway.unipi.it/mailman/listinfo/ntop _______________________________________________ Ntop mailing list [email protected] http://listgateway.unipi.it/mailman/listinfo/ntop
