Benoit Tellier created JAMES-3107:
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Summary: Log request when P99 is exceeded
Key: JAMES-3107
URL: https://issues.apache.org/jira/browse/JAMES-3107
Project: James Server
Issue Type: New Feature
Components: Metrics
Reporter: Benoit Tellier
Given our current tooling I struggle to correctly review slow requests from
James.
My current procedure is:
- In grafana identify timestamp of a spike
- Groke logs in kibana until I find something that could correspond
- Pray and hope my analisys stands.
This is both time consumming, hard to do and unreliable.
Identifying slow queries is important as it can point us to critical path to
optimize.
Hence I propose to log an info message when p99 is exceeded for high level
function (JMAP methods, IMAP processors, matcher mailet and overall processing,
mailbox listeners, and remote delivery).
In order to avoid log spamming I propose to only log when a function-specified
threshold is exceeded (defaulting to 100ms)
I belive it will help us coming up with more meaningful performance analysis
and better fixes for the greater goods of our prduction platforms.
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