Messages in this thread | | | Date | Tue, 21 Aug 2001 13:57:14 -0600 | From | Richard Gooch <> | Subject | Re: [FAQ?] More ram=less performance (maximum cacheable RAM) |
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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 http://9-muses.com/freak/reviews/super7.shtml : > 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 : > http://www.pcguide.com/ref/mbsys/cache/char_Cacheability.htm > > Patch and other info about non cacheable ram here : > http://www.keryan.org/brad/slram/
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.
Regards,
Richard.... Permanent: rgooch@atnf.csiro.au Current: rgooch@ras.ucalgary.ca - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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