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Date: Sat, 14 Jun 2008 21:29:09 +0200
From: Kris Kennaway <kris@FreeBSD.org>
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To: Wojciech Puchar <wojtek@wojtek.tensor.gdynia.pl>
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Cc: Ryan Coleman <ryan.coleman@cwis.biz>, freebsd-questions@FreeBSD.org
Subject: Re: 64-bit?
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Wojciech Puchar wrote:
>>>
>>> you should run 64-bit version on 64-bit machine for performance
>>
>> This is workload-dependent.  Some workloads run more slowly on a 
>> 64-bit CPU, others faster.
> could you please give an example of slower running FreeBSD/amd64 thing 
> than FreeBSD/i386?
> 
> there are more memory usage sometimes, that's why i use 32-bit squid 
> binary on 64-bit systems

Precisely that.  If your application relies on memory I/O, it may run 
slower because data is typically bigger so takes longer to copy.  Some 
java applications can fall into this category, for example.

Kris