The purpose of this post is to remind myself (just in case I got amnesia), the correlation of ping replies with bandwidth usage & packets count in pfSense 1.2 gateway.
One of the features in pfSense is RRD Graph, which graphs important information, such as bandwidth usage, CPU load, memory consumption, network (ping) quality, number of packets, and queues(if you’re utilizing Traffic shaper).
I would like to focus on network quality. These graphs basically just time based graph of ping replies to ISP gateway(s). The slower the ping responses, the higher the number on Y coordinate. 1 cell in X coordinate, correspond to 1 day.
As I stare this graph below, I notice some repetitive occurence/pattern:
Oh, forgot to mention, Week 39 and Week 40 are excluded, since we have
different modem and connection mode. Starting at week 41, I used Bridge
Mode in my ADSL modem, and a change from DHCP mode to PPPoE mode in pfSense’s WAN.
It seem that the correlation is (almost) linear, the higher the bandwidth usage, the data rush definetely hammered the network ping replies
Let see the packet graph:
Yes, we did see the same correlation. The higher the packet count per second, the higher the ping result
CONCLUSION: There is a linear correlation between pfSense Network Quality , Bandwidth Usage and Packet Count.
I hope this result will bring some lights to my customers of how their ISP is doing.
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