Hi Guys, Can somebody contribute some info ?
Best Regards, Rivalino -----Mensagem original----- De: Rivalino Matias Jr. [mailto:[EMAIL PROTECTED] Enviada em: quinta-feira, 18 de janeiro de 2007 22:35 Para: [email protected] Cc: [email protected] Assunto: ENC: Peak value. Hi List, Trying to answer my preview question regarding the peak values (see message below), Im looking at the ntop source code and focusing on the traffic.c file, specifically at the function updateDeviceThpt( ), I have identified the following code fragment: void updateDeviceThpt(int deviceToUpdate, int quickUpdate) { ... if(el->peakRcvdThpt < el->actualRcvdThpt) el->peakRcvdThpt = el->actualRcvdThpt; .... } I understood that this line is assigning the peak value (received throughput) for a specific host, Is it correct ? If positive, Im a little bit confused because the peak value should be kept the same or higher than the actual value, however, I have observed this value varying up and down during a specific ntop run (w/o ntop restart). Could be this behavior a bug ? I will appreciate any explanation about that. Thank you ! Rivalino -----Mensagem original----- De: Rivalino Matias Jr. [mailto:[EMAIL PROTECTED] Enviada em: sexta-feira, 12 de janeiro de 2007 13:54 Para: [email protected] Assunto: Peak value. Hi list, Im working on a project using ntop to measure the IP traffic from a SCADA system responsible for the supervision of the facilities from an electric energy distribution company. During the analysis of the previous 48 days of measuring, we have a doubt regarding the peak value computation. At the Network Throughput page, we got the Current, Average and Peak values. On the bottom of this page there is a description about the peak value: Peak values are the maximum value for any 10 second interval. We understood that in each 10-second interval of monitoring, the candidate to be the next peak value is computed based on the traffic measured in this interval. If the candidate value resulted is greater than the actual peak value then the candidate value is the new peak value. However, If not then ntop keeps the actual peak value. Is it correct? My question is because in a period of 48 days of monitoring we got the peak value went to down, but we understand that the peak value should be keep constant or increasing and never decreasing, except in case of the ntop restart. A sample of these values follows: Day Peak value 1 10 2 10 3 13 4 05 <= here. 5 08 6 08 In this period the system ran continuously without restart. Could you give some light? Thank you in advance! _______________________________________________ Ntop-dev mailing list [email protected] http://listgateway.unipi.it/mailman/listinfo/ntop-dev
