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  1. Couchbase Server
  2. MB-11387

Latency of stale=false queries easily reaches 1 minute and more (moderate workloads)

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Details

    • Bug
    • Resolution: Fixed
    • Blocker
    • 3.0
    • 3.0
    • couchbase-bucket, view-engine
    • Security Level: Public
    • Platform = Physical
      OS = CentOS 6.5
      CPU = Intel Xeon E5-2630 (24 vCPU)
      Memory = 64 GB
      Disk = 2 x SSD

    Description

      1 bucket x 20M x 2KB, non-DGM, 4 ddocs x 1 view, 10K ops/sec (read-heavy), 400 queries/sec

      It's possible to measure latency in simple cases like MB-11386. But in more complicated scenarios latency is extremely high.

      Most likely the issue is caused by timeout / retry logic in UPR client. Though I'm not really aware about current status of view engine.

      Attachments

        1. gdb.log
          32 kB
          Pavel Paulau

        Issue Links

          depends on

          Bug - A problem which impairs or prevents the functions of the product. MB-11486 Erlang memory usage increases to 50GB in 10 minutes after "unexpected_binary", node obviously fails afterwards

          • Test Blocker - QE-related tests can't proceed
          • Closed
          is duplicated by

          Bug - A problem which impairs or prevents the functions of the product. MB-11386 Latency of stale=false queries is 50% higher in 3.0 (light workloads)

          • Blocker - Blocks development and/or testing work, production could not run.
          • Closed
          relates to

          Bug - A problem which impairs or prevents the functions of the product. MB-11325 {UPR}:: Rebalance hanging during View Query + Rebalance tests

          • Test Blocker - QE-related tests can't proceed
          • Closed
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              pavelpaulau Pavel Paulau (Inactive)
              pavelpaulau Pavel Paulau (Inactive)
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              Dates

                Created:
                Updated:
                Resolved:

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