Swap / Was ->Re: INstallation Questions

[Mark Phillips]

So David, what should the swap size be? 2x memory, 3x, 5x?

Thanks!

Mark Phillips
Phillips Marketing, Inc.
mark@phillipsmarketing.biz
480 945-0798
480 945-9197 fax

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-----Original Message-----
From:	David Mandala [SMTP:davidm@them.com]
Sent:	Monday, March 17, 2003 9:40 PM
To:	Plug
Subject:	Re: Swap / Was ->Re: INstallation Questions

I go with the recommendation's of the kernel developers. The 2.4.x
series of kernels can be very aggressive on swap usage. If it starts
swapping it can take the entire 2x swap space quite quickly. 

The older 2.2 and 2.0 kernels were usually quite happy with 1x swap
unless you were on a very small RAM machine and then you might consider
2x or more. 

If the system runs out of memory bad things can happen so it's not worth
running out of RAM and swap. At the price of HD space today you would be
silly to spare the swap space and have the kernel starve for space.

Cheers,

Davidm

On Mon, 2003-03-17 at 20:01, Mike Starke wrote:
> Does the average user need to even consider a swap
> as large as 512Mb? How often (if at all) is it going
> to hit the swap file? Mine never see's the light of day.
> 
> Years ago I had a mail server (PII 300 or something) with about 128Mb
> ram and the same on the swap. The swap never saw the light of day. 300 users
> on the system  too.
> 
> Have I missed something in the swap calculation, or is the ole
> (swap = ~2x ram) a rough calc only on systems with low ram?
> 
> 
> v/r
> -Mike
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David IS Mandala
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