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LWN.net Weekly Edition for May 16, 2013
A look at the PyPy 2.0 release
PostgreSQL 9.3 beta: Federated databases and more
LWN.net Weekly Edition for May 9, 2013
(Nearly) full tickless operation in 3.10
My old Athlon XP 2000MHz has 5 cycles!
Running calibrator with size 13631488: 5 cycles 2.57 ns
Running calibrator with size 17563648: 5 cycles 2.59 ns matched 1 times
Running calibrator with size 21495808: 5 cycles 2.58 ns matched 2 times
Running calibrator with size 25427968: 5 cycles 2.57 ns matched 3 times
And many thanks to Mel for this wonderful series.
Huge pages part 5: A deeper look at TLBs and costs
Posted Mar 31, 2010 17:31 UTC (Wed) by jzbiciak (✭ supporter ✭, #5246)
On Athlons, at least, there's a hardware table walk and a two-level TLB structure. It wouldn't surprise me to find out that the 5 cycle number you report is the average cost of missing the L1 TLB (frequent, fast) and L2 TLB (less frequent, but slower).
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