cassandra-commits mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Sam Tunnicliffe (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (CASSANDRA-8627) Support Total/Recent latency histogram metrics for range slices
Date Fri, 04 Dec 2015 20:30:11 GMT

     [ https://issues.apache.org/jira/browse/CASSANDRA-8627?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Sam Tunnicliffe updated CASSANDRA-8627:
---------------------------------------
    Component/s: Observability

> Support Total/Recent latency histogram metrics for range slices
> ---------------------------------------------------------------
>
>                 Key: CASSANDRA-8627
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-8627
>             Project: Cassandra
>          Issue Type: Improvement
>          Components: Observability
>            Reporter: Chris Lohfink
>            Assignee: Sam Tunnicliffe
>              Labels: metrics
>             Fix For: 2.1.3
>
>         Attachments: 8627.txt
>
>
> The Metrics histogram is pretty bad at non-normal data like latencies and (empirically
tested and theoretically) is untrustworthy at 99th percentile. For applications that care
about the percentiles having the more statistically accurate version is beneficial.  Adding
the deprecated methods like other latency histograms for CASSANDRA-7338 temporarily would
help.
> This is just for 2.1 branch. CASSANDRA-5657 solves everything in 3.0.



--
This message was sent by Atlassian JIRA
(v6.3.4#6332)

Mime
View raw message