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From "Yonik Seeley" <>
Subject Re: Autocommit
Date Wed, 12 Dec 2007 23:48:40 GMT
On Dec 12, 2007 6:15 PM, Michael Thessel <> wrote:
> I already posted a while ago a problem that one of the solr threads
> starts using 100% of one of the processor cores on a 4 core
> system.

This sounds like warming / autowarming.
The other possibility is garbage collection.

> This doesn't happen right after the start it slightly
> increaes for about a week until the process runs constantly at
> 100%.

Is it still just one CPU at 100%, or is it ever 2 or more at 100%.
That would tell us if it were due to overlapping autowarming.

What happens to your index over time?  Does maxDoc() keep increasing?

> I couldn't figure out a solution for this. I could live with this
> problem but I think it has an side effect. While the processor load
> increases the time between two autocommits increases as well. Currently
> autocommit is set to 3 minutes. After 4 weeks the commits run only
> every 40 minutes.
> I have the following solr version installed:
> Solr Specification Version: 1.2.0
> Solr Implementation Version: 1.2.0 - Yonik - 2007-06-02 17:35:12
> Lucene Specification Version: 2007-05-20_00-04-53
> Lucene Implementation Version: build 2007-05-20
> Does anyone have a hint what I could look for?

Perhaps post the XML you get from the statistics page so we might know more.
Try looking in the logs to see what part of autowarming is taking so long.


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