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  1. Couchbase Server
  2. MB-9620

(or just kill mccouch) multi-tenancy: beam.smp memory usage optimization for non-views cases

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Details

    • Bug
    • Resolution: Fixed
    • Critical
    • 3.0
    • 2.2.0
    • ns_server
    • Security Level: Public
    • Triaged

    Description

      This JIRA ticket is due to this - http://review.couchbase.org/#/c/30388/

      Basically, customers are seeing beam.smp memory growth, in non-views, non-XDCR use cases. Alk's and Aaron's analysis showed many erlang processes (eprocesses) in couchdb code, due to having several eprocesses per vbucket, and this gets worse as customer was using multiple buckets.

      Solution is to leverage erlang hibernation for the top memory hog eprocesses.

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          relates to

          Bug - A problem which impairs or prevents the functions of the product. MB-9637 Rebalance-In 5 nodes on empty 18 buckets is very slow per bucket

          • Critical - Crashes, loss of data, severe memory leak.
          • Closed
          For Gerrit Dashboard: MB-9620
          # Subject Branch Project Status CR V
          30388,4 MB-9620 Hibernate idle per-vbucket gen_servers 2.1.1 couchdb Status: ABANDONED +1 +1
          35933,5 MB-9620: drop mccouch notifications on the floor master ns_server Status: MERGED +2 +1
          36025,2 MB-9620: Revert "MB-6413: open all databases on startup" master couchdb Status: MERGED +2 +1

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              pavelpaulau Pavel Paulau (Inactive)
              steve Steve Yen
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              Dates

                Created:
                Updated:
                Resolved:

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