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they used to say that swap should be arounf twice ram but that's really obsolete. By that reasoning, someone with 1GB of ram should have 2GB of swap where in reality he can probably get away with zero swap space for most purposes.
You can see how much swap you realistically need by launching a bunch of programs you can see yourself running in parallel and monitor how much swap space is being used and then add 100MB or so to that. To be safe, a minimum of 250MB maybe?
Your swap space seems fine - 600mb isn't really a huge amount. I have seen a post around here somewhere which stated that since most of us use 256mb or more memory that swap space is less necessary. I would stick with what you have.
Quatsch posted as I was typing. Strangely prescient of me, n'est ce pas?
ive gotten away with 150mb swap and 256mb ram but since i have a 40gb hdd and ive only used about 4gb in a year i have a 2GB swap just cause i can LOL...but dont make it too small cause you never know when you might need more
Yes. Swap can be resized easily (destroyed & remade, there's nothing important on them). The hard part is expanding the other partitions. Partitions with ext2/ext3 on them can be resized easily using the resize2fs tool. First delete the partition & remake it bigger than before with fdisk. Make sure you don't shrink the partition and make sure it starts in the same place. Then run 'resize2fs <partition>, and the will partition take all the new space.