Bala Kolla created COUCHDB-3307:
-----------------------------------
Summary: Limit calls to maybe_add_sys_db_callbacks to once per db
open
Key: COUCHDB-3307
URL: https://issues.apache.org/jira/browse/COUCHDB-3307
Project: CouchDB
Issue Type: Bug
Components: Database Core
Reporter: Bala Kolla
As part of performance regression testing we found out that there is a code
change in
{{couch_server:open/2,
Options = maybe_add_sys_db_callbacks(DbName, Options0)}}
As a result of this change we are basically calling
{{maybe_add_sys_db_callbacks}} for each request instead of once per db open.
We have fixed and executed a GET performance benchmark and found the following
improvements.
* Throughput: Up to ~5% improvement.
* 20% improvement in p90 and p99 latencies
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