Need additional query stats in admin interface - median, 95th and 99th
percentile
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Key: SOLR-1972
URL: https://issues.apache.org/jira/browse/SOLR-1972
Project: Solr
Issue Type: Improvement
Affects Versions: 1.4
Reporter: Shawn Heisey
Priority: Minor
Fix For: 3.1
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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