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  1. Couchbase Server
  2. MB-10496

Investigate other possible memory allocators that provide the better fragmentation management

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Details

    • Task
    • Resolution: Fixed
    • Critical
    • 4.0.0
    • 2.5.0, 3.0
    • couchbase-bucket
    • Security Level: Public
    • None

    Description

      As tcmalloc incurs a significant memory fragmentation for particular load patterns (e.g., append / prepend operations), we need to investigate the other options that have much less fragmentation overhead for those load patterns.

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          depends on

          Bug - A problem which impairs or prevents the functions of the product. MB-11756 segfault in ep.dylib`Checkpoint::queueDirty when running with jemalloc

          • Trivial - Cosmetic problem like misspelt words or misaligned text.
          • Closed
          is duplicated by

          Improvement - An improvement or enhancement to an existing feature or task. MB-12859 Memory usage by memcached never drop

          • Major - Major loss of function.
          • Closed
          For Gerrit Dashboard: MB-10496
          # Subject Branch Project Status CR V
          40405,1 MB-10496: Enable tcmalloc.aggressive_memory_decommit by default 3.0 memcached Status: ABANDONED 0 0
          40425,1 MB-10496: Add support to en/disable tcmalloc.aggressive_memory_decommit dynamically 3.0 memcached Status: ABANDONED -1 0
          42839,1 MB-10496 [4/6]: Add epoch field to Blob; use as part of defragmenter policy master ep-engine Status: ABANDONED 0 0
          42900,2 MB-10496: Add jemalloc as a cbdeps dependancy for macosx master tlm Status: MERGED +2 +1
          43079,2 MB-10496: Add jemalloc as a cbdeps dependancy for Ubuntu master tlm Status: MERGED +2 +1
          43849,2 MB-10496: Add jemalloc as a cbdeps dependancy for Debian 7 master tlm Status: MERGED +2 +1
          44083,2 MB-10496: Add jemalloc as a cbdeps dependancy for CentOS 6 master tlm Status: MERGED +2 +1
          44097,3 Revert "MB-10496: Add jemalloc as a cbdeps dependancy for CentOS 6" master tlm Status: MERGED +2 +1
          44111,2 MB-10496: Add jemalloc as a cbdeps dependancy for CentOS 6 master tlm Status: MERGED +2 +1

          Activity

            People

              drigby Dave Rigby (Inactive)
              chiyoung Chiyoung Seo (Inactive)
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              Dates

                Created:
                Updated:
                Resolved:

                PagerDuty