Kernel Trap: Linux: Is Swap Necessary?
Jun 02, 2004, 03:15 (9 Talkback[s])
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"Following recent discussions about tuning swapiness and
dynamically allocating swap as needed, a new discussion ensued on
the lkml questioning the need for swap altogether when a system has
"Nick Piggin explained that swap can improve performance no
matter how much RAM you have, 'well it is a magical property of
swap space, because extra RAM doesn't allow you to replace unused
memory with often used memory. The theory holds true no matter how
much RAM you have. Swap can improve performance. It can be
trivially demonstrated.' This said, numerous Linux users do report
success running a swapless system..."