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Date:      Tue, 3 May 2005 15:15:54 -0600
From:      "Chad Leigh -- Shire.Net LLC" <chad@shire.net>
To:        Kris Kennaway <kris@obsecurity.org>
Cc:        FreeBSD Mailing List <freebsd-questions@freebsd.org>
Subject:   Re: swap space
Message-ID:  <2491CCFD-B6DD-4A29-8023-9E46891DC7A2@shire.net>
In-Reply-To: <20050503210743.GA11371@xor.obsecurity.org>
References:  <000601c5500e$85b4f3c0$0a01a8c0@ops.cenergynetworks.com> <20050503204542.GB10776@xor.obsecurity.org> <D1E87824-3EDF-4E57-AF92-C1BB6ED668F2@shire.net> <20050503210743.GA11371@xor.obsecurity.org>

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On May 3, 2005, at 3:07 PM, Kris Kennaway wrote:

> On Tue, May 03, 2005 at 03:02:11PM -0600, Chad Leigh -- Shire.Net  
> LLC wrote:
>
>>
>> On May 3, 2005, at 2:45 PM, Kris Kennaway wrote:
>>
>>> Since it's a pain to add swap later you want to make
>>> allowances for future expansion (e.g. you'd need 32GB of swap if you
>>> ever plan to add 32GB of RAM).
>>>
>>
>> I understand that people recommend as much swap as you have ram or
>> more.  However, is this required and why?  I have a dual opteron
>> system running i386 5.3-release (with released patches) and it has
>> 4GB RAM and only 2GB of swap, which is hardly ever touched, and when
>> it is, just in small amounts.
>>
>> Why is this a problem?  (If it ever needs the 2gb of swap I am in
>> trouble as the load at that time would be sky high and the machine
>> not really responsive anyway)
>>
>
> I explained in my email..you need it to dump the kernel.
>

Thanks!

Well, on my production system, I am not dumping any kernels.  Once It  
crashes, I reboot it and go back into production.  Anything dumped  
would get wiped out.  Luckily I am pretty conservative and only move  
to new versions of the OS when they have been released a while and so  
my machines have not had panics in years.

Thanks
Chad



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