I'm using munin as a tool for monitoring my servers. On some of the graphs, the units are marked with a 'm'. For instance, my apache accesses graph is labeled 100m, 200m, 300m, along the y-axis. What does the 'm' mean? I understand 'M' (caps) is mega as in megabytes, the 'k' is kilo, the 'G' is giga, but what about 'm'? At first I thought it was million, but there's no way apache is serving 100 million accesses even per decade.
The 'm' stands for milli, meaning 10^(-3) or 1/1000th of the unit.
I don't know what exactly you are graphing there but it could be the average processing time per request. So it would be milliseconds.