ram query

Wed, 26 Dec 2012 05:21:36 GMT

I want to ask that,in windows 7 we can use an external device as ram of pc by windows ready boost

is it possible any how to use a portion of internal memory or of memory card as ram????

Re: ram query

Uliwooly — Wed, 26 Dec 2012 05:27:53 GMT

not at all

Re: ram query

Uliwooly — Wed, 26 Dec 2012 05:28:15 GMT

this might explain it

http://forum.xda-developers.com/showthread.php?t=741416

ey folks. I've only recently discovered Readyboost as I'm primarily a Linux guy. I got all hot and bothered about it immediately as well as it is (despite Microsofts constant onslaught of horrific failures) an absolutely brilliant and elegant technology/idea.

HOWEVER!!!

Nearly everyone is confused about what RB actually does, so I thought I'd take a minute to explain.

ReadyBoost is NOT swap. NOT SWAP!, not swap.

Swap is not something to get excited about, it is a last resort for when you're out of RAM and it's excruciatingly slow. In the land of IT, one of the first things we check for when a server is experiencing horrible performance, is "IS THIS MACHINE SWAPPING". Everyone's gotta learn that swap, while it is more useful than "not enough memory" it is nor more useful than utilizing the memory you already have, and it will always result in poor performance.

ReadyBoost is an additional disc cache for small, non-sequential reads/writes. It works with your existing FS cache but is faster in some cases because FLASH has a much lower seek time. Most FLASH chips have a seek time of <1ms while most rotational discs have a seek time of around 8ms. This adds up on a large number of small non-sequential r/w.

ReadyBoost takes any caching operations which fit it's strength profile (small, non-sequential) and offloads them to your FLASH device. This can increase load speed of some files/application dramatically (2-20x faster).

So, when someone asks you if they can use Readyboost because they don't have enough memory, please, take a moment to explain that RB is not swap, but is in fact a supplementary disc cache for small, non-sequential reads and writes.

That said, I haven't had time to dig into the question of whether or not RB would benefit Linux FS's.

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ram query

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