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How can i see the CPU L3 cache miss and hit ratio details in Rtedhat Linux box?

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Which CPU model? Performance counters are not a standard CPU feature, and you do need hardware support for this. –  MSalters Oct 7 '11 at 9:10
CPU Model : Intel(R) Xeon(R) CPU X7560 @ 2.27GHz –  Nikesh PL Oct 7 '11 at 9:35

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up vote 2 down vote accepted

Since it's an Intel CPU, you could try the Intel adaptor that plugs into the KDE utility ksysguard

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