Home page logo
/

nanog logo nanog mailing list archives

Re: How do you (not how do I) calculate 95th percentile?
From: Alex Rubenstein <alex () nac net>
Date: Wed, 22 Feb 2006 15:24:09 -0500 (Eastern Standard Time)



(I did this fast, and, who knows; I could be off my an order or two of magnitude)

Most people are using 64 bit counters. This avoids the wrapping problem (assuming you don't have 100GE and poll more then once every 5 years :-)).

2^64 is 18,446,744,073,709,551,616 bytes.

100 GE (100,000,000,000 bits/sec) is 12,500,000,000 bytes/sec.

It would take 1,475,739,525 seconds, or 46.79 years for a counter wrap.


--
Alex Rubenstein, AR97, K2AHR, alex () nac net, latency, Al Reuben
Net Access Corporation, 800-NET-ME-36, http://www.nac.net



  By Date           By Thread  

Current thread:
[ Nmap | Sec Tools | Mailing Lists | Site News | About/Contact | Advertising | Privacy ]
AlienVault