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From "Mark Miller (JIRA)" <>
Subject [jira] [Commented] (SOLR-4074) We should default ramBufferSizeMB to around 100
Date Wed, 14 Nov 2012 18:06:12 GMT


Mark Miller commented on SOLR-4074:

I think a few years ago that may have made sense - but at this point, being anal about 70MB
of RAM considering the performance gain seems a little dated. I bet 8/10 new users get better
performance from Lucene and .1/10 would find they have to lower it. Probably a sim number
as those that already have to lower - I'm not sure there is anything special about 32 if your
already fighting for every megabyte.
> We should default ramBufferSizeMB to around 100
> -----------------------------------------------
>                 Key: SOLR-4074
>                 URL:
>             Project: Solr
>          Issue Type: Improvement
>            Reporter: Mark Miller
>            Assignee: Mark Miller
>            Priority: Minor
>             Fix For: 4.1, 5.0
> You get diminishing returns after 100, but gains up to 100. In this day and age of RAM,
it seems better to default to 100 and have essentially the top indexing speed the buffer can
give us.

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