Unix is justifiably concerned about having adequate swap space. A system crash caused by this can be difficult to recover from. If you do a "/etc/swap -l" and see that you're only using a small portion of your swap space and have a "lot" left, then you can safely ignore the messages (just how much is a "lot" is hard to say, but if you have 25000 blocks and are only using 1000 or 2000, then I'd say you were fine). If you DO need more swap space, then you have a few options:
a. Using 'kconfig', reduce the number and size of buffers.
This isn't really a good idea since it could really degrade
performance as well as possibly causing more panics.
b. Add more swap space.
Fine, if you have it. You could either add another disk
as swap (nice) or repartition your present disk to create
a larger Swap partition (Ack!).
c. Add more memory.
If you have more memory, then this will reduce the need to
augment it with swap space... RAM's cheap too! There is an
old rule of thumb that the size of Swap should be about
2 to 3 times the amount of RAM, which would seem to contradict
the above. The thing is that if with the _present_ workload
you are swapping like crazy, then adding RAM will reduce
tha swapping. If, however, you start increasing the work-
load, then swapping will start again, and you better have
enough of it! This was the original intent of the Rule-Of-
Thumb. At the very least, Swap should always be at least
as big as the amount of RAM you have.
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