Really depends - StandardAnalyzer is probably a slower analyzer. But for
example, with my quad core desktop machine, indexing with 3 or 4
threads, I can do at least a couple hundred wikipedia docs per second
(though I'm not using StandardAnalyzer). I'm indexing 10,000 docs in
about a minute.
Does depend on your analzyers, and the size of the docs, but that looks
pretty slow to me. Giving the JVM enough heap?
On 03/15/2010 11:02 AM, Murdoch, Paul wrote:
Thanks. I'll try lowering the merge factor and see if speed increases.
The indexing is threaded....similar to the utility class in Listing 10.1
from Lucene in Action. Search speed is great once the index is
built....close to real time. So my main problem is getting the indexing
speed fixed. I do use the StandardAnalyzer for most of my fields. What
type of performance level should I be trying to hit for indexing
(docs/sec)...just to give me an idea of what to shoot for?
Paul
-----Original Message-----
From: java-user-return-45433-paul.b.murdoch=saic....@lucene.apache.org
[mailto:java-user-return-45433-paul.b.murdoch=saic....@lucene.apache.org
] On Behalf Of Mark Miller
Sent: Monday, March 15, 2010 10:48 AM
To: java-user@lucene.apache.org
Subject: Re: Batch Indexing - best practice?
On 03/15/2010 10:41 AM, Murdoch, Paul wrote:
Hi,
I'm using Lucene 2.9.2. Currently, when creating my index, I'm
calling
indexWriter.addDocument(doc) for each Document I want to index. The
Documents aren't large and I'm averaging indexing about 500 documents
every 90 seconds. I'd like to try and speed this up....unless 90
seconds for 500 Documents is reasonable. I have the merge factor set
to
1000. Do you have any suggestions for batch indexing? Is there
something like indexWriter.addDocuments(Document[] docs) in the API?
Thanks.
Paul
You should lower that merge factor - thats *really* high.
You shouldn't really need much more than 50 or so ... and for search
speed your going to want fewer segments anyway -
if your just going to end up optimizing at the end, there is no reason
for such a large merge factor - you will pay for most of what
you saved when you optimize.
That is very slow by the way. Should be much faster - especially if you
are using multiple threads.
--
- Mark
http://www.lucidimagination.com
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