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Note: for consistency, please take all measurements on rc20 and be sure to compile with DEBUG=no.
June 9, 2014
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atomicIntCmpX 6.21ns Atomic<int>::compareExchange atomicIntInc 5.98ns Atomic<int>::inc atomicIntLoad 0.56ns Atomic<int>::load atomicIntStore 0.56ns Atomic<int>::store atomicIntXchg 5.97ns Atomic<int>::exchange bMutexNoBlock 14.77ns std::mutex lock/unlock (no blocking) bufferBasic 11.42ns buffer create, add one chunk, delete bufferBasicAlloc 14.62ns buffer create, alloc block in chunk, delete bufferBasicCopy 13.24ns buffer create, copy small block, delete bufferCopy 14.76ns copy out 2 small chunks from buffer bufferExtendChunk 5.69ns buffer add onto existing chunk bufferGetStart 3.34ns Buffer::getStart bufferIterator 22.57ns iterate over buffer with 5 chunks condPingPong 4.04us std::condition_variable round-trip cppAtomicExchg 5.87ns Exchange method on a C++ atomic_int cppAtomicLoad 13.50ns Read a C++ atomic_int cyclesToSeconds 6.97ns Convert a rdtsc result to (double) seconds cyclesToNanos 9.75ns Convert a rdtsc result to (uint64_t) nanoseconds dispatchPoll 8.63ns Dispatch::poll (no timers or pollers) div32 4.86ns 32-bit integer division instruction div64 20.30ns 64-bit integer division instruction functionCall 1.95ns Call a function that has not been inlined getThreadId 2.24ns Retrieve thread id via ThreadId::get hashTableLookup 128.86ns Key lookup in a 1GB HashTable hashTableLookupPf 78.07ns Key lookup in a 1GB HashTable with prefetching lfence 2.82ns Lfence instruction lockInDispThrd 4.06ns Acquire/release Dispatch::Lock (in dispatch thread) lockNonDispThrd 214.54ns Acquire/release Dispatch::Lock (non-dispatch thread) memcpy100 8.78ns Copy 100 bytes with memcpy memcpy1000 37.37ns Copy 1000 bytes with memcpy memcpy10000 191.07ns Copy 10000 bytes with memcpy murmur3 10.31ns 128-bit MurmurHash3 (64-bit optimised) on 1 byte of data murmur3 40.47ns 128-bit MurmurHash3 hash (64-bit optimised) on 256 bytes of data objectPoolAlloc 27.86ns Cost of new allocations from an ObjectPool (no destroys) objectPoolRealloc 4.65ns Cost of ObjectPool allocation after destroying an object prefetch 34.72ns Prefetch instruction rdtsc 6.70ns Read the fine-grain cycle counter segmentEntrySort 7.02ms Sort a Segment full of avg. 100-byte Objects by age segmentIterator 1.83ms Iterate a Segment full of avg. 100-byte Objects sfence 1.39ns Sfence instruction spinLock 16.17ns Acquire/release SpinLock startStopTimer 14.76ns Start and stop a Dispatch::Timer spawnThread 9.89us Start and stop a thread throwInt 1.91us Throw an int throwIntNL 2.60us Throw an int in a function call throwException 1.84us Throw an Exception throwExceptionNL 2.58us Throw an Exception in a function call throwSwitch 5.46us Throw an Exception using ClientException::throwException vectorPushPop 3.72ns Push and pop a std::vector |
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