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SubjectRe: [FAQ?] More ram=less performance (maximum cacheable RAM)
Luca Montecchiani writes:
> I've recently updated my K6-2 from 128 to 256mbytes (2x128 pc133 dimms)
> compiling kernel take now 13 minutes instead of 9 minutes :(
> Ram is so cheap and socket7 is far from the death, time for a FAQ?
> Here some description from :
> The Level2 Cache determines the board's maximum cacheable RAM.
> Boards equipped with 512k can cache up to 128MB of RAM while
> those equipped with 1MB can handle up to 256MB of RAM. If you're using all
> of the RAM cacheable by the the L2 cache, performance is enhanced. Once you
> go above the maximum cacheable RAM, performance is lost. What this means to
> you is the more cache the better. For some users, 64MB or even 128MB of RAM
> is enough, but who knows, somewhere down the road, you might want to upgrade
> to 256MB. It's nice to know your board can handle the extra memory without
> worrying about losing performance.
> More technical information can be found here :
> Patch and other info about non cacheable ram here :

Er, are you sure about this? The problem isn't the size of your cache,
it's the size of your TAG RAM. That's a different beast.


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