What happens after a L2 TLB miss?

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  1. Why is the loop instruction slow? Couldn’t Intel have implemented it efficiently?
  2. Enhanced REP MOVSB for memcpy
  3. How many CPU cycles are needed for each assembly instruction?
  4. Adding a redundant assignment speeds up code when compiled without optimization
  5. Is performance reduced when executing loops whose uop count is not a multiple of processor width?
  6. Why is Skylake so much better than Broadwell-E for single-threaded memory throughput?
  7. Understanding the impact of lfence on a loop with two long dependency chains, for increasing lengths
  8. How are x86 uops scheduled, exactly?
  9. Why does breaking the “output dependency” of LZCNT matter?
  10. What setup does REP do?
  11. Are there any modern CPUs where a cached byte store is actually slower than a word store?
  12. 32-byte aligned routine does not fit the uops cache
  13. Size of store buffers on Intel hardware? What exactly is a store buffer?
  14. Lost Cycles on Intel? An inconsistency between rdtsc and CPU_CLK_UNHALTED.REF_TSC
  15. Assembly – How to score a CPU instruction by latency and throughput
  16. Cycles/cost for L1 Cache hit vs. Register on x86?
  17. Return address prediction stack buffer vs stack-stored return address?
  18. Why is this SSE code 6 times slower without VZEROUPPER on Skylake?
  19. What are the latency and throughput costs of producer-consumer sharing of a memory location between hyper-siblings versus non-hyper siblings?
  20. How can I accurately benchmark unaligned access speed on x86_64?
  21. Is ADD 1 really faster than INC ? x86 [duplicate]
  22. Avoid stalling pipeline by calculating conditional early
  23. Why is a conditional move not vulnerable to Branch Prediction Failure?
  24. x86 registers: MBR/MDR and instruction registers
  25. How has CPU architecture evolution affected virtual function call performance?
  26. Is it useful to use VZEROUPPER if your program+libraries contain no SSE instructions?
  27. What kind of address instruction does the x86 cpu have?
  28. Latency bounds and throughput bounds for processors for operations that must occur in sequence
  29. latency vs throughput in intel intrinsics
  30. Can the simple decoders in recent Intel microarchitectures handle all 1-µop instructions?

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