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https://issues.apache.org/jira/browse/SOLR-1364?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12838557#action_12838557
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ian connor commented on SOLR-1364:
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Good idea. Here is some sample out put on a solr stats page.
description: The standard Solr request handler
stats:
handlerStart : 1267037173182
requests : 3099817
errors : 2221
timeouts : 0
totalTime : 52082310
avgTimePerRequest : 16.801737
standardDeviation : 304.06168
avgRequestsPerSecond : 31.80935
10.0.16.181:8895/solr_numRequests : 12869
10.0.16.181:8884/solr_averageQTime : 9.651404
10.0.16.181:8896/solr_queryTime : 314763
10.0.16.181:8896/solr_elapsedTime : 681581
10.0.16.181:8885/solr_elapsedTime : 193555
10.0.16.181:8882/solr_elapsedTime : 329673
10.0.16.181:8898/solr_elapsedTime : 519454
10.0.16.181:8896/solr_queryQTime : 0
10.0.16.181:8897/solr_numRequests : 15344
10.0.16.181:8885/solr_queryTime : 62374
10.0.16.181:8891/solr_elapsedTime : 549124
10.0.16.181:8884/solr_elapsedTime : 367643
10.0.16.181:8898/solr_queryTime : 183239
10.0.16.181:8885/solr_averageQTime : 11.983478
10.0.16.181:8888/solr_averageQTime : 52.41645
10.0.16.181:8892/solr_averageQTime : 25.302937
10.0.16.181:8887/solr_queryQTime : 101
etc.....
>From this sample, we can see 10.0.16.181:8892 average is only 25ms where
>10.0.16.181:8888 is at 52ms (twice as much) so we might consider rebalancing
>the shards to give 10.0.16.181:8888 less work.
Ideally, it would be good to get individual times to also go back on the
request to the client so that these could be tracked and to see if any patterns
emerge (certain queries hurt certain shards or the time might correspond to a
replication event). If someone wants to take these times and put on them on the
request - that would be brilliant (I did not figure that part out yet).
> Distributed search return Solr shard header information (like qtime)
> --------------------------------------------------------------------
>
> Key: SOLR-1364
> URL: https://issues.apache.org/jira/browse/SOLR-1364
> Project: Solr
> Issue Type: Improvement
> Components: search
> Affects Versions: 1.4
> Reporter: Jason Rutherglen
> Priority: Minor
> Fix For: 1.5
>
> Attachments: SOLR-1364.patch
>
> Original Estimate: 72h
> Remaining Estimate: 72h
>
> Distributed queries can expose the Solr shard query information
> such as qtime. The aggregate qtime can be broken up into the
> time required for each stage.
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