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From peter royal <pro...@apache.org>
Subject Re: Performance and FS block size
Date Sun, 12 Feb 2006 00:30:27 GMT
On Feb 10, 2006, at 4:55 PM, Otis Gospodnetic wrote:
> I'm wondering if anyone has tested Lucene indexing/search  
> performance with different file system block sizes?
>
> I just realized one of the servers where I run a lot of Lucene  
> indexing and searching has an FS with blocks of only 1K in size  
> (typically they are 4k or 8k, I believe), so I started wondering  
> what's better for Lucene - smaller or larger blocks?  I have a  
> feeling 1K is too small, although I don't know enough to back up  
> this feeling. :(

If you want to boost performance, changing the readahead size on the  
device will probably help, if not tuned. Use the 'blockdev' command  
on linux to tweak this.
-pete

-- 
proyal@apache.org - http://fotap.org/~osi



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