lucene-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From robert engels <reng...@ix.netcom.com>
Subject Re: potential indexing perormance improvement for compound index - cut IO - have more files though
Date Mon, 18 Dec 2006 20:55:57 GMT
I think the important issues are index size, stability and number of  
concurrent readers.

We achieved the best performance by using a pool of file descriptors  
to a segment so we could avoid the synchronization block, but this  
only worked for large, relatively unchanging segments.


On Dec 18, 2006, at 2:51 PM, Doug Cutting wrote:

> robert engels wrote:
>> Using a shared FileChannel.pread actually performs a  
>> synchronization under Windows.
>
> Sigh.  Still, it'd be no worse than current FSDirectory on Windows.
>
> Doug
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: java-dev-unsubscribe@lucene.apache.org
> For additional commands, e-mail: java-dev-help@lucene.apache.org
>


---------------------------------------------------------------------
To unsubscribe, e-mail: java-dev-unsubscribe@lucene.apache.org
For additional commands, e-mail: java-dev-help@lucene.apache.org


Mime
View raw message