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https://issues.apache.org/jira/browse/SOLR-1972?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Alan Woodward updated SOLR-1972:
--------------------------------

    Attachment: SOLR-1972_metrics.patch

This patch declares a MetricsRegistry in the RequestHandlerBase constructor, 
and uses that to ensure that the various metrics are held per-handler.

There doesn't seem to be any way of setting the metric names after 
construction, so I don't think we'll be able to write the handler path into the 
metrics, unfortunately.  But you'll be able to tell the various handlers apart 
by accessing the data through the existing SOLR JMX beans.
                
> Need additional query stats in admin interface - median, 95th and 99th 
> percentile
> ---------------------------------------------------------------------------------
>
>                 Key: SOLR-1972
>                 URL: https://issues.apache.org/jira/browse/SOLR-1972
>             Project: Solr
>          Issue Type: Improvement
>          Components: web gui
>    Affects Versions: 1.4
>            Reporter: Shawn Heisey
>            Assignee: Alan Woodward
>            Priority: Minor
>             Fix For: 4.1
>
>         Attachments: elyograg-1972-3.2.patch, elyograg-1972-3.2.patch, 
> elyograg-1972-trunk.patch, elyograg-1972-trunk.patch, 
> SOLR-1972-branch3x-url_pattern.patch, SOLR-1972-branch4x.patch, 
> SOLR-1972-branch4x.patch, SOLR-1972_metrics.patch, SOLR-1972_metrics.patch, 
> SOLR-1972_metrics.patch, SOLR-1972_metrics.patch, SOLR-1972_metrics.patch, 
> SOLR-1972_metrics.patch, SOLR-1972.patch, SOLR-1972.patch, SOLR-1972.patch, 
> SOLR-1972.patch, SOLR-1972-url_pattern.patch
>
>
> I would like to see more detailed query statistics from the admin GUI.  This 
> is what you can get now:
> requests : 809
> errors : 0
> timeouts : 0
> totalTime : 70053
> avgTimePerRequest : 86.59209
> avgRequestsPerSecond : 0.8148785 
> I'd like to see more data on the time per request - median, 95th percentile, 
> 99th percentile, and any other statistical function that makes sense to 
> include.  In my environment, the first bunch of queries after startup tend to 
> take several seconds each.  I find that the average value tends to be useless 
> until it has several thousand queries under its belt and the caches are 
> thoroughly warmed.  The statistical functions I have mentioned would quickly 
> eliminate the influence of those initial slow queries.
> The system will have to store individual data about each query.  I don't know 
> if this is something Solr does already.  It would be nice to have a 
> configurable count of how many of the most recent data points are kept, to 
> control the amount of memory the feature uses.  The default value could be 
> something like 1024 or 4096.

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