BeeOnRope

BeeOnRope has asked 328 questions and find answers to 305 problems.

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Performance Matters

BeeOnRope questions

Can consecutive truncating integer divisions be replaced with a multiplication?
Long latency instruction
Are .NET WSE client stubs thread-safe?
Loading and storing long doubles in x86-64
Is it an ODR violation to have inconsistent noexcept in declaration?
What's the equivalent of vbroadcastsd for xmm registers?
x86 non-mov instruction that has a write-only destination and runs on any port on Intel?
Is there a way to determine that SMM interrupt has occured?
Can clang be convinced to optimize this almost-leaf function
Is there any way to redirect the output of native JVM output like -XX:+PrintCompilation

BeeOnRope answers

Using POSIX thread library in x86_64 assembler (yasm) takes more execution time
x86-64 page table Global bit
Long latency instruction
What is the point of MESI on Intel 64 and IA-32
Java BitSet, subset vs intersection
What happens when a core write in its L1 cache while another core is having the same line in its L1 too?
Can value of RDX in main be depended upon when linking assembly app against glibc
C++ function name too long for perf
Design options for references into a thread safe cache when evicting older entries
File I/O performance is too good to be true?