You are viewing a plain text version of this content. The canonical link for it is here.
Posted to dev@lucene.apache.org by "Andrzej Bialecki (JIRA)" <ji...@apache.org> on 2017/03/07 17:11:38 UTC
[jira] [Resolved] (SOLR-10226) JMX metric avgTimePerRequest broken
[ https://issues.apache.org/jira/browse/SOLR-10226?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Andrzej Bialecki resolved SOLR-10226.
--------------------------------------
Resolution: Fixed
> JMX metric avgTimePerRequest broken
> -----------------------------------
>
> Key: SOLR-10226
> URL: https://issues.apache.org/jira/browse/SOLR-10226
> Project: Solr
> Issue Type: Bug
> Security Level: Public(Default Security Level. Issues are Public)
> Components: metrics
> Affects Versions: 6.4.1
> Reporter: Bojan Smid
> Assignee: Andrzej Bialecki
> Fix For: 6.5, master (7.0)
>
> Attachments: SOLR-10226.patch, SOLR-10226.patch
>
>
> JMX Metric avgTimePerRequest (of org.apache.solr.handler.component.SearchHandler) doesn't appear to behave correctly anymore. It was a cumulative value in pre-6.4 versions. Since totalTime metric was removed (which was a base for monitoring calculations), avgTimePerRequest seems like possible alternative to calculate "time spent in requests since last measurement", but it behaves strangely after 6.4.
> I did a simple test on gettingstarted collection (just unpacked the Solr 6.4.1 version and started it with "bin/solr start -e cloud -noprompt"). The query I used was:
> http://localhost:8983/solr/gettingstarted/select?indent=on&q=*:*&wt=json
> I run it 30 times in a row (with approx 1 sec between executions).
> At the same time I was looking (with jconsole) at bean solr/gettingstarted_shard2_replica2:type=/select,id=org.apache.solr.handler.component.SearchHandler
> Here is how metric was changing over time (first number is "requests" metric, second number is "avgTimePerRequest"):
> 10 6.6033
> 12 5.9557
> 13 0.9015 ---> 13th req would need negative duration if this was cumulative
> 15 6.7315
> 16 7.4873
> 17 0.8458 ---> same case with 17th request
> 23 6.1076
> At the same time bean solr/gettingstarted_shard1_replica2:type=/select,id=org.apache.solr.handler.component.SearchHandler also showed strange values:
> 6 5.13482
> 8 10.5694
> 9 0.504
> 10 0.344
> 12 8.8121
> 18 3.3531
> CC [~ab]
--
This message was sent by Atlassian JIRA
(v6.3.15#6346)
---------------------------------------------------------------------
To unsubscribe, e-mail: dev-unsubscribe@lucene.apache.org
For additional commands, e-mail: dev-help@lucene.apache.org