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From "Mikhail Khludnev (JIRA)" <>
Subject [jira] [Commented] (SOLR-3585) processing updates in multiple threads
Date Thu, 30 Aug 2012 22:36:08 GMT


Mikhail Khludnev commented on SOLR-3585:


two threads speedup limit is reasonable to me - you have two ways chip
Key factor for enabling threads is cpu-idle time i.e. no gain is expected after 100% cpu usage.

Also, local streaming is a rare usage, I believe. Most time it's kind of remote producer-consumer
eg solrj,  where proper level of utilization is challenging. 
> processing updates in multiple threads
> --------------------------------------
>                 Key: SOLR-3585
>                 URL:
>             Project: Solr
>          Issue Type: Improvement
>          Components: update
>    Affects Versions: 4.0-ALPHA
>            Reporter: Mikhail Khludnev
>            Priority: Minor
>         Attachments: multithreadupd.patch, report.tar.gz, SOLR-3585.patch, SOLR-3585.patch
> Hello,
> I'd like to contribute update processor which forks many threads which concurrently process
the stream of commands. It may be beneficial for users who streams many docs through single

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