[ale] Anyone know if this is true?

[Scott Castaline]

On 10/12/2011 09:40 PM, Tavarvess Ware wrote:
>
> Scott I read the ram x 2= swap in my Linux classes as well and have 
> generally followed that, but with memory soaring as it has lately i am 
> starting to rethink that.  A system 48gigs of memory would be 96 in 
> swap..... I wonder if te old format has changed and I haven't heard yet.
>
I only go RAM x 2 = swap for the 1st 2 GB of RAM so 2GB RAM = 4GB swap. 
 From there on it's RAM x 1 = swap so 4GB RAM = 6GB swap. So your 48 GB 
of RAM = 50GB swap, and yup that's one hell of a lot of swap space.
>
> On Oct 12, 2011 9:32 PM, "Scott Castaline" <skotchman at gmail.com 
> <mailto:skotchman at gmail.com>> wrote:
>
>     On 10/12/2011 04:14 PM, planas wrote:
>     > On Wed, 2011-10-12 at 15:13 -0400, Geoffrey Myers wrote:
>     >> 'Just so you all know, when determining how much space to assign to
>     >> swap: Swap isn't just used for paging or virtual memory
>     management; swap
>     >> is also used by power management for suspend-to-disk
>     (hibernation). '
>     >>
>     >> I seriously don't know, so I'm asking.
>     >>
>     >
>     > I have seen that a good swap size is ~1.5x the RAM.
>     > --
>     > Jay Lozier
>     > jslozier at gmail.com <mailto:jslozier at gmail.com>
>     >
>     >
>     >
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>     I remember from somewhere that upto 2GB use 2.0x RAM above 2GB of
>     RAM go
>     with 1:1 ratio so 4Gb RAM = 6GB swap. I don't remember why 2x on the
>     first 2GB and this goes back to when 4GB was a lot on pre-configured
>     retail boxes. So like Geoffrey I can't see having 18GB of swap for a
>     16GB machine.
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