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From Toke Eskildsen ...@statsbiblioteket.dk>
Subject Re: What contributes to disk IO?
Date Wed, 26 Mar 2014 07:47:35 GMT
On Wed, 2014-03-26 at 01:12 +0100, Software Dev wrote:
> What are the main contributing factors for Solr Cloud generating a lot
> of disk IO?
> 
> A lot of reads? Writes? Insufficient RAM?

Searching is heavy random I/O reads, indexing is bulk reads and writes.

> I would think if there was enough disk cache available for the whole
> index there would be little to no disk IO.

True for searching, but updates (of course) requires real storage
activity. Are you perhaps doing very frequent commits?

- Toke Eskildsen, State and University Library, Denmark



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