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L1 L2 latency

boriwalanirmal
Beginner
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Hey every body,

Can i estimate L1 L2 access time with vtune, if not what would be best valu to use.

I am using 2 x Quad core xeon 5300.

Thanx for reading.
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1 Reply
Thomas_W_Intel
Employee
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The cache latencies are listed in the Intel 64 and IA32 Architectures Optimization Reference
Sect. 2.1.5 for Core architecture:
L1 3 cycles
L2 14-15 cycles
Sect. 2.2.4 for Nehalem architecture:
L1 4 cycles
L2 ~10 cycles
L3 35-40+ cycles
Please read the respective sections for a more precise description.

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