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Date:      Fri, 27 Jan 2006 22:15:07 -0500
From:      Andre Guibert de Bruet <andy@siliconlandmark.com>
To:        Mike Jakubik <mikej@rogers.com>
Cc:        arch@freebsd.org, current@freebsd.org
Subject:   Re: [TEST/REVIEW] CPU accounting patches
Message-ID:  <9C3809F0-05C0-41A4-BD82-5CD8BA3B2A81@siliconlandmark.com>
In-Reply-To: <43D9DECF.2060101@rogers.com>
References:  <20060127045553.F36B34503E@ptavv.es.net> <43D9DECF.2060101@rogers.com>

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On Jan 27, 2006, at 3:50 AM, Mike Jakubik wrote:

> Kevin Oberman wrote:
>> Good accounting is very important to some, but the issue of  
>> dealing with reduced clock speed is almost certainly of no issue  
>> when it comes to charging for computer use. I can't imagine any  
>> reason someone would be paying for CPU time on a processor not  
>> running "full out".
>>
>> The only time that this might be an issue is when thermal  
>> management takes over. I'd hope that thermal management would  
>> never kick in on a commercial compute server, but, if it did, the  
>> customer should, at least, only pay for the number of seconds the  
>> job would have run had it been properly cooled. (Actually, he  
>> should probably pay less as his time is also being wasted.)
>
> As a user from the 2.x days, i would much rather have the great  
> increase of context switching performance than super accurate cpu  
> accounting that i will never use. FreeBSD needs to focus on  
> performance now.

These are my exact thoughts on the matter!

Andy

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