I tried to enable ps3vram as a swap device on Fedora11 (on PS3), and it worked.
It improves the performance in heavy swapping situations.
"ps3vram" is a kernel module which makes the RSX VRAM a storage device.
To use ps3vram as a swap device, add these lines to "/etc/rc.local" and reboot.
Code:
mkswap /dev/ps3vram
swapon -p 1 /dev/ps3vram
To check it is working, type "swapon -s" in a terminal.
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Fedora 11 Preview
ps3 petitboot 08.08.15
PlayStation3 firmware 2.70