FLASH disk as swap

[Kurt Granroth]

On 12/3/09 9:39 AM, der.hans wrote:
> Having swap be 1.5 times the size of ram is good, double the size of ram
> is better.

Those are old-school heuristics from back in the day when 32 MB was a 
lot of RAM.  I stretch to think of a case where 6-8 GB of swap would 
come into play at *all*.  That is, if you have a case where the system 
is using multi-gig amounts of swap, then I can almost guarantee that it 
is utterly unusable.  One could say that it's there as a 
"just-in-case"... but I'm having a hard time buying that.  Unusable is 
unusable.  It would take so incredibly long to recover that any 
production server would have long been rebooted or managed some other way.

I think I did 2x RAM up until I had 512MB and then 1x RAM until I got to 
1GB.  Then I was .5x at 2GB RAM and finally .25x now ;-)