[CASSANDRA-8702] LatencyMetrics is reporting total latency in nanoseconds rather than microseconds

• Type: Bug
• Status: Resolved
• Priority: Normal
• Resolution: Fixed
• Fix Version/s: 2.2.0 beta 1
• Component/s: Legacy/Observability
• Severity: Normal
• Assignee: T Jake Luciani
• Reporter: Mike Adamson

Authors

T Jake Luciani

Reviewers

Mike Adamson

• Created: 29/Jan/15 11:22
• Updated: 16/Apr/19 09:31
• Resolved: 29/Jan/15 16:02

Description

I don't know if this is the desired behaviour but all the comments in the code indicate that it should be reporting microseconds.

A single write shows the following:

WriteLatency
------------
Count: 1
Min: 315.853
Max: 379.022

WriteTotalLatency
-----------------
Count: 339667

In LatencyMetrics:

    /** Total latency in micro sec */
    public final Counter totalLatency;

Issue Links

• is related to: CASSANDRA-5657 Upgrade metrics lib and remove deprecated metrics