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[Jason Dixon <question272229@xxxxxxxxxxxxxxxxxxxxx>]

Question #272229 on Graphite changed:
https://answers.launchpad.net/graphite/+question/272229

Jason Dixon proposed the following answer:
As Denis says, you need to limit MAX_CACHE_SIZE. You're attempting to
write to a SAN which is a big no-no; your IOPS are almost certainly
inadequate, which is causing your cache memory to fill with datapoints
and carbon-cache to crash.

You need to determine how many IOPS your SAN is actually capable of
delivering over the wire, then setting your MAX_UPDATES_PER_SECOND
somewhere below that. If you don't have disk capable of IOPS at the same
rate as the number of datapoints coming into Carbon, then your goal
should be to increase the number of batched datapoints per write
(pointsPerUpdate). By adjusting MAX_UPDATES_PER_SECOND you should be
able to achieve a higher batch rate.

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