This document shows the cache latencies of the various machines we have here at CSL. The results were generated with the lmbench tool ( http://www.bitmover.com/lmbench/ ), and were spot-checked against actual documentation to make sure the results were sane. ============================ L1 Cache sizes and Latencies ============================ machine arch Speed DL1 speed DL1 L2 size (MHz) (ns) cycles size ------- ---- ------- ----- ------ ---------- ------- sampaka12 P4 Xeon 2790 0.703 2 8k 4way 512k cluizel P4 Xeon 2787 0.724 2 8k 4way 512k dolfin P4 2394 0.853 2 8k 4way 512k cluster Core2 E5440 2820 1.066 3 32k 8way 6144k cluster-026 Core2 E5430 2660 1.128 3 32k 8way 6144k domori25 PentiumD 3463 1.155 4 16k 8way 2048k ithaca P4 Xeon 2988 1.343 4 16k 8way 1024k tasse Core2 Q6600 2399 1.250 3 32k 8way 4096k venchi Phenom 9500 2212 1.360 3 64k 2way 512k ps3 Cell 1591 1.545 2.5? 32k ?way 512k old-milka Athlon MP 1729 1.735 3 64k 2way 256k tobler Athlon XP 1663 1.804 3 64k 2way 256k chocovic Core1 T2300 1600 1.812 3 32k 8way 2048k atom-power atom N270 1597 1.899 3 24k 6way 512k lindt ARM v5te 1197 2.599 3 16k 4way 256k valor Niagara1 1000 3.115 3 8k ?way 3072k elrey09 Power3 375 5.335 2 64k 128way 512k spruengli Pentium III 545 5.497 3 16k 4way 512k carnivore USPARC II 359 5.597 2 16k 1way 4096k bmul alpha EV6 496 6.042 3 64k 2way 4096k hershey MIPS R12k 300 6.630 2 32k 2way 2048k nestle Pentium II 400 7.495 3 16k 4way 512k perugina MIPS R5k 178 11.500 2 32k 2way 512k ancient Pentium Pro 198 15.100 3 8k 2way 512k ============================ L2 cache sizes and latencies ============================ Many of the older chips with extremely high latencies have off-chip L2s. machine arch Speed L2 speed L2 (MHz) (ns) cycles size ------- ---- ------- ----- ------ ------ cluster Core2 E5440 2820 5.365 15 6144k cluster-026 Core2 E5430 2660 5.665 15 6144k tasse Core2 Q6600 2399 5.863 14 4096k sampaka12 P4 Xeon 2790 6.568 18 512k cluizel P4 Xeon 2787 6.575 18 512k venchi Phenom 9500 2212 6.950 15 512k dolfin P4 2394 7.720 18 512k domori25 PentiumD 3463 7.982 28 2048k chocovic Core1 T2300 1600 8.436 14 2048k ithaca P4 Xeon 2988 9.431 28 1024k atom-power atom N270 1597 10.200 16 512k old-milka Athlon MP 1729 11.600 20 256k tobler Athlon XP 1663 12.000 20 256k ps3 Cell 1591 12.600 20 512k lindt arm v5te 1197 21.000 25 256k valor Niagara1 1000 22.100 22 3072k carnivore USPARC II 359 27.900 10 4096k bmul alpha EV6 496 30.300 15 4096k elrey09 Power3 375 32.000 12 512k spruengli Pentium III 545 33.000 18 512k ancient Pentium Pro 198 35.400 7 512k hershey MIPS R12k 300 47.300 14 2048k nestle Pentium II 400 55.000 22 512k perugina MIPS R5k 178 256.700 46 512k ---------- Data Gathered by Vince Weaver ( vince _at_ csl.cornell.edu) 11 May 2009