tree 3bb41b69a7a75f7c8a9adf1a9889f968342ff8ad
parent 2aa17ffe428b9ac8477cedfed293b18f12c2376e
author liwang <liwang@apple.com> 1627464255 +0200
committer Enrico Olivelli <eolivelli@apache.org> 1627464255 +0200

ZOOKEEPER-4289: Reduce the performance impact of Prometheus metrics

Enabling Prometheus provider has significant impact on the performance of both read and write operations. This is to reduce the impact by making the Prometheus summary reporting as an async operation.

Load test results showed that the avg read latency and throughput after the fix is on par with the performance when Prometheus is disabled. For writes, the avg latency was reduced 25% and the avg throughput was increased 20% after the fix.

Author: liwang <liwang@apple.com>

Reviewers: Enrico Olivelli <eolivelli@apache.org>, Andor Molnar <anmolnar@apache.org>

Closes #1698 from li4wang/ZOOKEEPER-4289