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[Ivan Pouzyrevsky <question178969@xxxxxxxxxxxxxxxxxxxxx>]

Question #178969 on Graphite changed:
https://answers.launchpad.net/graphite/+question/178969

Ivan Pouzyrevsky posted a new comment:
Cody Stevens has reminded me that I promised a patch. Here it is:
http://cl.ly/3K0317043S2f1M2w1v0Y .

The patch is quite simple: for a given prefix P it forbids to perform an
update for a metric M with prefix P if the queue size is less than N
points. P and N are parameters. The consequences of such behaviour are
the following: firstly, it increases average I/O request size (hence
increasing the throughput); secondly, it increases memory footprint
since from now on you have to store way more datapoints in memory. In my
current setup I have total memory consumption by carbon-caches about
17.4G with 1.74G per instasnce. Total cache size oscillates between 20M
and 110M points with 2M to 11M points per instance.

I hope that someone find this patch useful or use it for further
improvements in writer's algorithm.

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