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  1. Couchbase C client library libcouchbase
  2. CCBC-1477

CPU time x2.2 when upgrading to Couchbase server 7.0.0?

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Details

    • Improvement
    • Resolution: Unresolved
    • Critical
    • None
    • 3.2.1
    • library
    • None
    • Ubuntu 20.04 64 bits
    • Impediment
    • 1

    Description

      At the occasion of the upgrade to 7.0.0, we witness an increase of CPU time on the client side of 2.2 times approximately, which is huge. That CPU time includes application + libcouchbase.

      Anything we're doing wrong?

      We're not using 7.0.0 features, and the application mostly saves documents. Nothing fancy.

      The number of writing threads is set to 8 on a 32-core machine.

      We're not using any compression explicitly, and even when using the minimum compression size to a very large number (which should inhibit compression), the CPU cost is still the same.

      Thanks for your help!

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            avsej Sergey Avseyev
            vincent.lextrait Vincent Lextrait
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