Programicaly measure size and way-order of L1 and L2 caches

Posted by osgx on Stack Overflow See other posts from Stack Overflow or by osgx
Published on 2010-04-05T03:18:36Z Indexed on 2010/04/05 3:23 UTC
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Hello

How can I measure programicaly (not query the OS, but measure) the size and order of associativity of L1 and L2 caches (data caches)?

Assumtions about system: It has L1 and L2 cache (may be L3 too, may be cache sharing), It may have a hardware prefetch unit (just like P4+), it has a stable clocksource (tickcounter or good HPET for gettimeofday). There are no assumtions about OS (it can be Linux, Windows, smth non-standart), and we can't use posix queries.

Language is C. And Compiler optimizations may be disabled.

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