BeeOnRope

BeeOnRope has asked 295 questions and find answers to 285 problems.

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Performance Matters

BeeOnRope questions

Does the llvm-bolt instrumentation mode result in less accurate BOLT profiles?
Bring code into the L1 instruction cache without executing it
Emplacement-like construction for std::vector
Randomized testing in Java
Using the perf events from perf list programatically
Define an assert which is effective even if NDEBUG is defined
Efficiently dividing unsigned value by a power of two, rounding up
What's up with gcc's handling of alloca?
Does clflush also remove TLB entries?
Pattern to initialize base class in derived class constructor (or factory)

BeeOnRope answers

How to maintain a persistent background thread?
Does the llvm-bolt instrumentation mode result in less accurate BOLT profiles?
First use of AVX 256-bit vectors slows down 128-bit vector and AVX scalar ops
"perf" - count instructions per method
tryLock() in a loop?
Fastest way to set a single memory cell to zero or a constant in x86 assembly?
How do I calculate memory bandwidth on a given (Linux) system, from the shell?
Intel FMA Instructions Offer Zero Performance Advantage
Is there a standard constant *nix benchmark, and if not, how to make a `bogobench`?
Deadlock caused by creating a new thread during class initialization