[rrd-users] Heavy-Duty RRD Usage
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Mon Sep 17 21:46:15 MEST 2001
I've set up RRDtool and a heavily-modified version of Bronc here to do
some performance and usage graphing. Currently, I'm monitoring about
1200 hosts with many more to come. All was going well until today when
I attempted to make some graphs which showed utilization of an entire
server farm for a project. To do this, I have a massive CDEF that adds
up (for example) web hits from 200 different RRD files and displays them
in a single graph. I'm running this under Apache/mod_perl using RRDs.
While it /does/ work, the memory usage of the Apache processes is
unacceptable--roughly 170M per child. Before I started combining many
RRD files into one graph, memory usage was down around 15M per child.
My question: when RRDs is run under mod_perl, does it clean up its
memory after each call to RRDs::graph? Does anyone have any suggestions
for ways to slim down these processes? I don't mind if they use this
much memory while generating a graph but when they are finished with
that, the memory needs to be freed.
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