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I'd like to create a munin graph that shows website page latencies. I want to use the access logs get published daily to a log server.

We already have a munin instance running, so being able to hook in to that would be nice.

The problem is though, when munin calls the plugin on the log server, it won't have any latency data to report for the present time. When the logs get copied at the end of the day, it will have a day's worth of data.

How can I backfill a day's worth of data in this scenario?

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Backfilling can be achieved using rrdtool. However, wouldn't it be much easier to just graph the latency of a GET in its own plugin? http_loadtime provides you with this. –  Kvisle Nov 6 '11 at 1:41
Thanks, looks like using rrdtool is the way to go indeed. I can't use http_loadtime because the OS on our production hosts doesn't support munin; also there are some other things I'd like to graph that require some aggregate calculation first. –  oksayt Nov 22 '11 at 4:57
What OS doesn't support munin? –  Kvisle Nov 22 '11 at 14:44

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