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From Piotr Kosiorowski <>
Subject Re: Nutch - new public server
Date Fri, 08 Apr 2005 16:04:58 GMT

I am sorry I cannot give you precise answer but I was not doing any 
serious benchmarks. I do not have any numbers but some time ago I did 
some experiments and it looked like Opterons were faster. Comparision 
was done on indexing speed rather than searching and as far as I 
remember they have different disk controllers (SATA/SCSI) so it is not 
very meaningful test.
On stability - at the beginning I was really afraid about stability of 
Opteron box - it failed regulary - but after finding out it was a 
hardware problem (memory) - everything works without problems.


Byron Miller wrote:
> I run on Opterons as well for my search nodes and they are much quicker
> (and more stable) than the intel's i ran on.  I have *NEVER* had a stable
> JVM for more than 24 hours on abusy Xeon or anything with Hyperthreading
> enabled.
> The opteron has a fast FSB, large cache and on a recent linux kernel the
> stability is second to none.  Update 2 of the jre 1.5 also improved my
> stability.
> -byron
> -----Original Message-----
> From: Chris Lamprecht <>
> To:
> Date: Thu, 7 Apr 2005 19:35:20 -0500
> Subject: Re: Nutch - new public server
>>Hi Piotr,
>>Do you have any search speed performance comparison data between the
>>64-bit JVM on an Opteron versus an Intel xeon with the 32-bit JVM? 
>>I'd appreciate any info you have.  Thanks,
>>>Search engine runs on Opteron boxes with Linux and JVM 1.5 (64-bit
>>>version). Web search engine is based on nutch code with some

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