Re: Wow! Is memory ever cheap!

From: Chris Wedgwood (cw@f00f.org)
Date: Sat May 05 2001 - 22:20:43 EDT

  • Next message: Rik van Riel: "Re: [PATCH] CPU hot swap for 2.4.3 + s390 support"

        I'm burning it in right now, I wrote a little program which fills
        it with different test patterns and then reads them back to make
        sure they don't lose any bits. Seems to be working, it's done
        about 30 passes.

    I wrote something similar to test an Alpha with a flakey L2 cache; it
    didn't find anything. However, a script that did kernel compiles in a
    loop soon finds errors.

    I don't know much about memory testing, other than it is hard, really
    hard -- and there is some magic in the way gcc access memory that
    seems to trigger nasties.

    It has been suggested that a good thesis would be to distill whatever
    magic gcc has for testing memory and study that :)
        
        1.5GB for $400. Amazing. No more whining from you guys that
        BitKeeper uses too much memory :-)

    1.5GB without ECC? Seems like a disater waiting to happen? Is ECC
    memory much more expensive?

      --cw
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