Swap size

[Nicholas Wieland]

I was reading tuning(7), and I found that I should size my swap  
double the size of my physical memory.
AFAIK that was true some years ago, when memory was not as cheap as  
now, and following that guideline I should set my swap to 2GB, which  
seems far too much for swap (at least to me ...). I will never need  
this much memory as 1GB RAM and 2GB swap.
Is it still correct ? How can I resize with bsdlabel if I already  
used all my disk space during install ?

TIA,
   ngw

-- 
Nicholas Wieland
nicholas.wieland at gmail.com