Posts Tagged ‘rrdtool’

Remove Spikes From RRDtool Graphs

I use RRDtool to make graphs on various things I monitor like server stats, network stats and it does a relatively good job. My one (big) complaint is that when you restart you occasionally see these gigantic spikes that completely mess up the data. I’ve even seen spikes larger than what the system can technically […]

Compiling RRDtool 1.3.x On Mac OS X

I’ve recently been trying to upgrade RRDtool to 1.3.x as I’ve previously been using 1.2.x. New in 1.3 is moving to Cairo graphics, which is pretty cool and provides much better anti-aliased text. MMAP IO should also help since I run it on an old box. It’s a worthwhile upgrade.

Goodbye MRTG

I’ve finally got just about all the network graphs I maintain using RRDtool rather than MRTG. I started doing this since MRTG isn’t good for graphing things with more than 2 sets of numbers. I started doing this because I wanted to track cable modem data. I figured while I’m at it, I should move […]

Cable Modem Power Level Graphing

As I hinted last week, I graph a fair amount of data, since I find it pretty handy at times, not to mention just interesting to see in a pretty graph form. I’ve been doing this for years and it’s served me well. One thing I really wanted to get going was monitoring the cable […]