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From Mark Miller <markrmil...@gmail.com>
Subject Re: lucene 2.9.0RC4 slower than 2.4.1?
Date Wed, 16 Sep 2009 16:22:59 GMT
bq. I'll do some profiling now again and let you know the results.

Great - it will be interesting to see the results. My guess, based on
the 2.9 new api profiling, is that your queries may not be agreeing with
some of the changes somehow. Along with the profiling, can you fill us
in on the query types you are using as well? (eg qualities)

And grab invocations if its possible.

-- 
- Mark

http://www.lucidimagination.com



Thomas Becker wrote:
> Tests run on tmpfs:
> config: impl=SeparateFile serial=false nThreads=4 iterations=100 bufsize=1024
> poolsize=2 filelen=18920301
> answer=850258539, ms=8090, MB/sec=935.4907787391842
> config: impl=ChannelFile serial=false nThreads=4 iterations=100 bufsize=1024
> poolsize=2 filelen=18920301
> answer=850258903, ms=39444, MB/sec=191.8700030422878
> config: impl=ChannelPread serial=false nThreads=4 iterations=100 bufsize=1024
> poolsize=2 filelen=18920301
> answer=850258903, ms=8504, MB/sec=889.9483066792098
> config: impl=PooledPread serial=false nThreads=4 iterations=100 bufsize=1024
> poolsize=2 filelen=18920301
> answer=850258903, ms=9585, MB/sec=789.5795931142409
>
> I did run some tests now with SimpleFSDirectory and MMapDirectory. Both are
> faster than NIOFS and the response times improved. But it's still slower than 2.4.
>
> I'll do some profiling now again and let you know the results.
>
> Thanks again for all the great support to all who've answered.
>
>
> Mark Miller wrote:
>   
>> Can you run the following test on your RAMDISK?
>>
>> http://people.apache.org/~markrmiller/FileReadTest.java
>>
>> I've taken it from the following issue (in which NIOFSDirectory was
>> developed):
>> https://issues.apache.org/jira/browse/LUCENE-753
>>
>>     
>
>   




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