Bala Kolla created COUCHDB-3304:
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Summary: Rollback default value of config
global_change:max_write_delay to 500
Key: COUCHDB-3304
URL: https://issues.apache.org/jira/browse/COUCHDB-3304
Project: CouchDB
Issue Type: Bug
Components: Database Core
Reporter: Bala Kolla
This config default value has changed from 500 to 25 and it's causing a
noticeable impact on the performance. We executed a performance test benchmark
to simulate the load test of put_insert (create) scenario. The summary of the
results is shown here.
As evident in the performance test results shown below, there is improvement
across the board. Throughput improved by around 10%, p99 is improved by around
20% and similar gains in other latency metrics.
A0 ==> Default config of 25
A1 ==> 500.0
bench_result p90
p99 p999
global_changes-max_write_delay
A0 363874 83485.6 115756
176128
A1 403827 63356.4 84457.6
102221
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