Re: RAM & Swap(was:Hibernation)

["Wichmann, Viggo" <vw@geus.DK>]

Russell wrote:

	So you create a 1M partition for swap then.  Using RAM as swap will
not gain
	you anything.  At best it won't be used and will just be a waste of
memory
	that could otherwise be used for disk cache.  At worst you will have
programs
	being paged to it which means copying data to/from the memory area
which
	wastes CPU time.
	With 64bit memory it will take 512 reads and 512 writes to copy a 4K
page of
	memory.  If the memory is 10ns then it'll be 10*1024 == 10240ns to
copy the
	page.  That's 4096 clock cycles on a modern CPU.

I think you're missing a calculation here: how long time will it take to
copy, say 4k, from memory to disk?
Sounds like a really good idea to try to utilize whatever co-proc you may
have on your graphics-card. Please let us know how the progress is.
Btw, you must have a quite exotic use of your laptop to want raid?!
Most people seem to use their laptop for working on-the-move and have a
desktop for heavy storage/processing at home. But maybe the line between
laptops and desktops are fading away...
Best Regards
Vitux


---
Let's get back from la-la-land here, 'cause this ain't gonna happen