On 07/03/2009 05:46 AM, MontyRee wrote:
>
> But, if there is no swap partion at system, what would be happen?
> that makes the system unstable or not?
That depends on what you're running. As people point out, you can
usually get along without one, but doing so is a bad idea in some
configurations. If you run a server that's dedicated to any single
large application (like dedicated tomcat or database server), then you
should have swap at least as large as RAM. Even when you configure the
system so that applications stay within the bounds of RAM, fork() will
fail in your application if it doesn't have room for a complete second
copy of itself in memory. The space won't normally be used, since Linux
uses a copy-on-write technique for fork(), but it still requires the
space before it will allow fork() to succeed.
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