lucene-java-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Glen Newton" <>
Subject Re: Scaling
Date Wed, 16 Jul 2008 14:01:36 GMT
A subset of your questions are answered (or at least examined) in my
postings on multi-thread queries on a multiple-core single system:


2008/7/16 Karl Wettin <>:
> Is there some sort of a scaling strategies listing available? I think there
> is a Wiki page missing.
> What are the typical promblems I'll encounter when distributing the search
> over multiple machines?
> Do people split up their index per node or do they use the complete index
> and restrict what part to search in using filters? The latter would be good
> for the scores, right? Then how do I calculate the cost in speed for the
> score with better quality? I mean, splitting the index in two and searching
> on two machines using ParallelMultiSearcher probably means that I'll get
> something like 30% speed improvement and not 100%. Or?
> Is there something to win by using multiple threads each restricted to a
> part each of the same index on a single machine, compared to a single
> thread? Or is it all I/O? That would mean there is something to gain if the
> index was on SSD or in RAM, right?
>      karl
> ---------------------------------------------------------------------
> To unsubscribe, e-mail:
> For additional commands, e-mail:



To unsubscribe, e-mail:
For additional commands, e-mail:

View raw message