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Confused about Memory Usage

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Fri, 09/21/2012 - 09:39
crickeys
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I'm confused about RAM sizing. I have 4 couchbase servers with 2Gigs ram on each of them. I have setup 2 couchbase buckets each with 200MB PER NODE RAM and 1 memcached bucket each with 150MB Per Node RAM. So, I would think that the usage for one server would not exceed (200 + 200 +150) = 550MB. But, it's more than double that. On one server if I checkout TOP, I see memcached using 463MB and beam.smp using 584MB. Why would this be?

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Fri, 09/21/2012 - 17:49
ingenthr
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Yes, this is definitely something we're aware of and plan to spend some time on. At the moment, the memory usage is likely related to the view engine and autocompaction.

By the way, while many people run with less memory, the requirements actually do state 4GB memory minimum per node.

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Sat, 09/22/2012 - 21:17
crickeys
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Yeah, even on a 4GB machine I'm occasionally running out of memory and then the OOM killer engages and kills memcached, which ruins everything and I'm not really sure that couchbase recovers at all from that kind of thing.

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