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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 theres no way apache is serving 100 million accesses even per decade.

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See also this question on the same topic, with a sample graph and comments that line up with comments here. Also I second Edward Ross's comments about changing time units to deal with this very unclear way of handling fractional data values. –  acarwile Sep 11 '13 at 16:59
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up vote 24 down vote accepted

The 'm' stands for milli, meaning 10^(-3) or 1/1000th of the unit.

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The confusing thing with munin here appears to be using the "m" on accesses per second axis, to indicate a fractional access, which is a slightly strange concept. It might be more intuitive for munin to switch the time period, to say accesses per minute or accesses per hour. –  Edward Ross Oct 31 '11 at 11:25
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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.

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