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. -- You received this question notification because you are a member of graphite-dev, which is an answer contact for Graphite. _______________________________________________ Mailing list: https://launchpad.net/~graphite-dev Post to : [email protected] Unsubscribe : https://launchpad.net/~graphite-dev More help : https://help.launchpad.net/ListHelp
