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  1. Couchbase Server
  2. MB-7210

ops drop during thruput test when compaction kicks in

    Details

    • Type: Bug
    • Status: Resolved
    • Priority: Major
    • Resolution: Incomplete
    • Affects Version/s: 2.0
    • Fix Version/s: 2.0
    • Security Level: Public
    • Labels:
      None

      Description

      thruput test on ec2 (build 2.0-1950), 80 clients no ops bound, 2 server nodes.

      ops = ~120k

      when compaction kicks in, observed a 1-2 seconds ops drop.

      Haven't seen it repeating.

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        Activity

        Hide
        chiyoung Chiyoung Seo added a comment -

        This very short time of drop shouldn't be an issue as long as the client threads don't experience any much higher latency while compaction is running.

        This could be caused by the temporal delay in gathering stats.

        Show
        chiyoung Chiyoung Seo added a comment - This very short time of drop shouldn't be an issue as long as the client threads don't experience any much higher latency while compaction is running. This could be caused by the temporal delay in gathering stats.
        Hide
        steve Steve Yen added a comment -

        Also, this test was server-bound, so theoretically the server as at capacity. Kicking off a compaction should be expected to affect performance.

        Show
        steve Steve Yen added a comment - Also, this test was server-bound, so theoretically the server as at capacity. Kicking off a compaction should be expected to affect performance.
        Hide
        ronnie Ronnie Sun (Inactive) added a comment -

        Also observed the similar behaviors on windows cluster.

        Show
        ronnie Ronnie Sun (Inactive) added a comment - Also observed the similar behaviors on windows cluster.
        Hide
        dipti Dipti Borkar added a comment -

        Does it go down from 120K to zero ops?

        Show
        dipti Dipti Borkar added a comment - Does it go down from 120K to zero ops?

          People

          • Assignee:
            chiyoung Chiyoung Seo
            Reporter:
            ronnie Ronnie Sun (Inactive)
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            Dates

            • Created:
              Updated:
              Resolved:

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