John Roesler created KAFKA-7275:
-----------------------------------
Summary: Prototype lock-free metrics
Key: KAFKA-7275
URL: https://issues.apache.org/jira/browse/KAFKA-7275
Project: Kafka
Issue Type: Improvement
Components: metrics, streams
Reporter: John Roesler
Assignee: John Roesler
Currently, we have to be a little conservative in how granularly we measure
things to avoid heavy synchronization costs in the metrics.
It should be possible to refactor the thread-safe implementation to use
volatile and java.util.concurrent.atomic instead and realize a pretty large
performance improvement.
However, before investing too much time in it, we should run some benchmarks to
gauge how much improvement we can expect.
I'd propose to run the benchmarks on trunk with debug turned on, and then to
just remove all synchronization and run again to get an upper-bound performance
improvement.
If the results are promising, we can start prototyping a lock-free
implementation.
--
This message was sent by Atlassian JIRA
(v7.6.3#76005)
