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  1. Couchbase Server
  2. MB-49170

Replica item count lagging active in Magma insert test

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      Note: Initially opened on performance variation between, that has been addressed, but now tracking the issue where replica item count does not reach active

      In Magma insert only tests, we see high performance variation. 

      http://172.23.123.237/#/timeline/Linux/hidd/S0/all

      In the latest runs with build 7.1.0-1558, the throughput changed from 122K to 226K.

      http://cbmonitor.sc.couchbase.com/reports/html/?snapshot=rhea_710-1558_access_key_prefix_e3f5&&label=high_insert_rate&snapshot=rhea_710-1558_access_key_prefix_3994&label=low_insert_rate

      In the run having higher throughput, replica sync rate can't catch up.

        There are more sync write flushes after a certain point.

        Sarath Lakshman

      Please take a look. Is there a way we can change checkpoint settings? It looks like the runs can go to different modes (or code paths), even with the same build.

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              bo-chun.wang Bo-Chun Wang
              bo-chun.wang Bo-Chun Wang
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