Dan Track wrote:
I was recently asked a question about how much RAM should there be
within a server given that the APP uses 8GB of Memory, should I buy
10Gig of memory and have a small harddrive and no swap space? Would
this configuration allow everything in my OS to run from RAM and not
from swap? If this is the case then there's no need to ever create
swap, is there?!?
We just discussed this in the "Ideal swap partition size" thread.
If your application is 8GB, you need at least 16GB of address space in
case the server attempts to call an external program. When it does so,
it will call fork(). While fork() will not copy all of the pages of a
process under Linux, you do generally need to have the space available.
If you're going to run an 8GB database server, with 10GB of RAM, I would
strongly recommend at least 10GB swap space. You won't use it, but the
system won't work reliably if it's missing.
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