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From Yonik Seeley <yo...@lucidimagination.com>
Subject Re: lucene 2.9.0RC4 slower than 2.4.1?
Date Tue, 15 Sep 2009 20:12:46 GMT
Note that when nthreads>1 I sometimes get wrong answers for SimpleFile...
hopefully it's just a bug in the test... I'll look into it a little.

-Yonik
http://www.lucidimagination.com



On Tue, Sep 15, 2009 at 4:00 PM, Mark Miller <markrmiller@gmail.com> wrote:
> I'm jealous of your 4 3.0Ghz to my 2.0Ghz.
>
> I was on dynamic scaling frequency and switched to 2.0Ghz hard.
>
> On ramdisk, my puny 2.0's almost catch you and get a bit over 1800MB/s
> with SeparateFile.
>
> I'm smoked on PooledPread and ChannelPread though. Still sub 500 for
> both, even
> on the ramdisk.
>
> Its an absurd comparison though - everyone knows a jackalope is faster
> than a koala.
>
> - Mark
>
> Yonik Seeley wrote:
>> Here's my results in my quad core phenom, with ondemand CPU freq
>> scaling disabled (clocks locked at 3GHz)
>>
>> Ubuntu 9.04, filesystem=ext4 on 7200RPM IDE drive, testfile=95MB fully cached.
>>
>> Linux odin 2.6.28-15-generic #49-Ubuntu SMP Tue Aug 18 19:25:34 UTC
>> 2009 x86_64 GNU/Linux
>> Java(TM) SE Runtime Environment (build 1.6.0_14-b08)
>> Java HotSpot(TM) 64-Bit Server VM (build 14.0-b16, mixed mode)
>>
>>
>> config: impl=ClassicFile serial=false nThreads=4 iterations=20
>> bufsize=1024 poolsize=2 filelen=95610240
>> answer=1165427971, ms=15610, MB/sec=489.99482383087764
>>
>> config: impl=SeparateFile serial=false nThreads=4 iterations=20
>> bufsize=1024 poolsize=2 filelen=95610240
>> answer=1165427672, ms=4115, MB/sec=1858.7652976913728
>>
>> config: impl=PooledPread serial=false nThreads=4 iterations=20
>> bufsize=1024 poolsize=2 filelen=95610240
>> answer=1165427971, ms=6352, MB/sec=1204.15919395466
>>
>> config: impl=ChannelFile serial=false nThreads=4 iterations=20
>> bufsize=1024 poolsize=2 filelen=95610240
>> answer=1165427971, ms=20347, MB/sec=375.91876935174713
>>
>> config: impl=ChannelPread serial=false nThreads=4 iterations=20
>> bufsize=1024 poolsize=2 filelen=95610240
>> answer=1165427971, ms=5189, MB/sec=1474.0449412218154
>>
>> config: impl=ChannelTransfer serial=false nThreads=4 iterations=20
>> bufsize=1024 poolsize=2 filelen=95610240
>> answer=1165427971, ms=14794, MB/sec=517.021711504664
>>
>> -Yonik
>> http://www.lucidimagination.com
>>
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>>
>
>
> --
> - Mark
>
> http://www.lucidimagination.com
>
>
>
>
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