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[Question #105233]: Size of carbon-cache process only grows, never shrinks

To: graphite-dev@xxxxxxxxxxxxxxxxxxx
From: spliff <question105233@xxxxxxxxxxxxxxxxxxxxx>
Date: Mon, 22 Mar 2010 21:40:10 -0000
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New question #105233 on Graphite:
https://answers.launchpad.net/graphite/+question/105233

We have a graphite system that is quite busy, 42k metrics updated every 30 seconds. We plan on adding about 250k metrics although they will not all be updated at 30 seconds. The system is fast enough to handle it, dual Xeon 5500, Raid5 15k drives etc..

When we start our metric loader process intraday it attempts to load the metrics from the beginning of the day as fast as it can. Carbon-cache grows in size as it is busy creating the whisper files, processing incoming data, etc. When carbon-cache catches  up, the resident memory size of the process stays at about 1 gig, it never shrinks.

Is this the intended behavior of a very busy carbon-cache system? Should we expect the memory footprint to only grow and never shrink?

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