...
Note: for consistency, please take all measurements on rc20 and be sure to compile with DEBUG=no.
...
Nov 16, 2016
| No Format |
|---|
|
atomicIntCmpX 6.23ns25ns Atomic<int>::compareExchange
atomicIntInc 5.85ns90ns Atomic<int>::inc
atomicIntInc 5.84ns94ns std::atomic<int>::fetch_add
atomicIntLoad 0.56ns59ns Atomic<int>::load
atomicIntStore 0.56ns57ns Atomic<int>::store
atomicIntXchg 5.84ns90ns Atomic<int>::exchange
bMutexNoBlock 14.46ns57ns std::mutex lock/unlock (no blocking)
bufferAppendCopy1 87.09ns99ns appendCopy 1 byte to a buffer
bufferAppendCopy50 8.96ns93ns appendCopy 50 bytes to a buffer
bufferAppendCopy100 98.09ns47ns appendCopy 100 bytes to a buffer
bufferAppendCopy250 1816.08ns74ns appendCopy 250 bytes to a buffer
bufferAppendCopy500 2220.56ns90ns appendCopy 500 bytes to a buffer
bufferAppendExternal1 8.24ns13ns appendExternal 1 byte to a buffer
bufferAppendExternal50 78.87ns15ns appendExternal 50 bytes to a buffer
bufferAppendExternal100 7.95ns84ns appendExternal 100 bytes to a buffer
bufferAppendExternal250 7.79ns76ns appendExternal 250 bytes to a buffer
bufferAppendExternal500 78.72ns25ns appendExternal 500 bytes to a buffer
bufferBasic 1110.13ns88ns buffer create, add one chunk, delete
bufferBasicAlloc 1112.99ns29ns buffer create, alloc block in chunk, delete
bufferBasicCopy 12.00ns02ns buffer create, copy small block, delete
bufferCopy 14.20ns25ns copy out 2 small chunks from buffer
bufferExtendChunk 4.56ns69ns buffer add onto existing chunk
bufferGetStart 3.34ns41ns Buffer::getStart
bufferConstruct 5.84ns90ns buffer stack allocation
bufferReset 4.72ns79ns Buffer::reset
bufferCopyIterator2 6.67ns46ns buffer iterate over 2 copied chunks, accessing 1 byte each
bufferCopyIterator5 98.18ns71ns buffer iterate over 5 copied chunks, accessing 1 byte each
bufferExternalIterator2 98.06ns96ns buffer iterate over 2 external chunks, accessing 1 byte each
bufferExternalIterator5 23.24ns46ns buffer iterate over 5 external chunks, accessing 1 byte each
condPingPong 23.98us09us std::condition_variable round-trip
cppAtomicExchg 56.83ns64ns Exchange method on a C++ atomic_int
cppAtomicLoad 0.65ns60ns Read a C++ atomic_int
cyclesToSeconds 6.13ns30ns Convert a rdtsc result to (double) seconds
cyclesToNanos 6.35ns32ns Convert a rdtsc result to (uint64_t) nanoseconds
dispatchPoll 9.21ns36ns Dispatch::poll (no timers or pollers)
div32 4.72ns79ns 32-bit integer division instruction
div64 20.15ns22ns 64-bit integer division instruction
functionCall 1.67ns74ns Call a function that has not been inlined
generateRandomNumber 1617.56ns21ns Call to randomNumberGenerator(x)
genRandomString 1.49us Generate a random 100-byte value
getThreadId 1.95ns73ns Retrieve thread id via ThreadId::get
getThreadIdSyscall 41.15ns04ns Retrieve kernel thread id using syscall
hashTableLookup 124123.09ns41ns Key lookup in a 1GB HashTable
hashTableLookupPf 7370.98ns57ns Key lookup in a 1GB HashTable with prefetching
lfence 23.92ns00ns Lfence instruction
lockInDispThrd 23.79ns52ns Acquire/release Dispatch::Lock (in dispatch thread)
lockNonDispThrd 279324.30ns23ns Acquire/release Dispatch::Lock (non-dispatch thread)
mapCreate 2221.63ns15ns Create+delete entry in std::map
mapLookup 1614.02ns87ns Lookup in std::map<uint64_t, uint64_t>
memcpyCached100 14.55ns52ns memcpy 100 bytes with hot/fixed dst and src
memcpyCached1000 21.82ns79ns memcpy 1000 bytes with hot/fixed dst and src
memcpyCached10000 185.16ns40ns memcpy 10000 bytes with hot/fixed dst and src
memcpyCachedDst100 93.82ns36ns memcpy 100 bytes with hot/fixed dst and cold src
memcpyCachedDst1000 122.30ns05ns memcpy 1000 bytes with hot/fixed dst and cold src
memcpyCachedDst10000 355356.23ns61ns memcpy 10000 bytes with hot/fixed dst and cold src
memcpyCold100 372377.20ns18ns memcpy 100 bytes with cold dst and src
memcpyCold1000 655659.00ns35ns memcpy 1000 bytes with cold dst and src
memcpyCold10000 3.18us memcpy 10000 bytes with cold dst and src
murmur3 10.28ns96ns 128-bit MurmurHash3 (64-bit optimised) on 1 byte of data
murmur3 4950.72ns44ns 128-bit MurmurHash3 hash (64-bit optimised) on 256 bytes of data
objectPoolAlloc 29.16ns52ns Cost of new allocations from an ObjectPool (no destroys)
objectPoolRealloc 4.48ns57ns Cost of ObjectPool allocation after destroying an object
pingConditionVar 1.56us61us Round-trip ping with std::condition_variable
prefetch 35.20ns85ns Prefetch instruction
rdtscqueueEstimator 2.23ns 6.67nsRecompute # bytes outstanding in queue
rdtsc Read 6.74ns Read the fine-grain cycle counter
segmentEntrySort 8.14ms38ms Sort a Segment full of avg. 100-byte Objects by age
segmentIterator 12.97ms09ms Iterate a Segment full of avg. 100-byte Objects
sessionRefCount 12.55ns59ns Create/delete SessionRef
serialize 55.34ns41ns cpuid instruction for serialize
sfence 1.39ns41ns Sfence instruction
spinLock 189.90ns60ns Acquire/release SpinLock
startStopTimer 5633.46ns43ns Start and stop a Dispatch::Timer
spawnThread 8.90us89us Start and stop a thread
throwInt 2.02us07us Throw an int
throwIntNL 2.48us55us Throw an int in a function call
throwException 12.97us03us Throw an Exception
throwExceptionNL 2.78us81us Throw an Exception in a function call
throwSwitch 6.05us04us Throw an Exception using ClientException::throwException
timeTrace 157.93ns56ns Record an event using TimeTrace
unorderedMapCreate 7279.63ns05ns Create+delete entry in unordered_map
unorderedMapLookup 1314.07ns62ns Lookup in std::unordered_map<uint64_t, uint64_t>
vectorPushPop 3.80ns90ns Push and pop a std::vector |
June
...
21,
...
2016
| No Format |
|---|
|
atomicIntCmpX 6.21ns Atomic<int>6.23ns Atomic<int>::compareExchange
atomicIntInc 5.98ns85ns Atomic<int>::inc
atomicIntLoad
atomicIntInc 0.56ns5.84ns Atomic<int>std::atomic<int>::load
atomicIntStorefetch_add
atomicIntLoad 0.56ns Atomic<int>::store atomicIntXchg Atomic<int>::load
atomicIntStore 5.97ns Atomic<int>::exchange bMutexNoBlock 0.56ns 14.77ns stdAtomic<int>::mutexstore
lock/unlockatomicIntXchg (no blocking) bufferBasic 11 5.42ns84ns buffer create, add one chunk, delete
bufferBasicAlloc Atomic<int>::exchange
bMutexNoBlock 14.62ns buffer create, alloc block in14.46ns chunk, delete bufferBasicCopy 13.24ns buffer create, copy small block, delete
bufferCopystd::mutex lock/unlock (no blocking)
bufferAppendCopy1 8.09ns 14.76ns appendCopy 1 byte copyto outa 2buffer
smallbufferAppendCopy50 chunks from buffer bufferExtendChunk 58.69ns96ns buffer add onto existing chunk bufferGetStartappendCopy 50 bytes to a buffer
bufferAppendCopy100 3.34ns Buffer::getStart
bufferIterator 9.09ns 22.57ns appendCopy 100 bytes iterateto overa buffer
bufferAppendCopy250 with 5 chunks condPingPong 18.08ns 4.04us appendCopy 250 std::condition_variable round-trip
cppAtomicExchg bytes to a buffer
bufferAppendCopy500 522.87ns56ns Exchange method on a C++ atomic_int
cppAtomicLoad appendCopy 500 bytes to a buffer
bufferAppendExternal1 13.50ns 8.24ns Read a C++ atomic_int cyclesToSeconds appendExternal 1 byte to 6.97nsa buffer
bufferAppendExternal50 Convert a rdtsc result to (double) seconds
cyclesToNanos7.87ns appendExternal 50 bytes to 9.75nsa buffer
bufferAppendExternal100 Convert a rdtsc result7.95ns to (uint64_t) nanoseconds dispatchPoll appendExternal 100 bytes to a buffer
8.63nsbufferAppendExternal250 Dispatch::poll (no timers or pollers)
div32 7.79ns appendExternal 250 bytes to a buffer
bufferAppendExternal500 7.72ns 4.86ns 32-bit integer division instructionappendExternal div64500 bytes to a buffer
bufferBasic 20.30ns 64-bit integer division instruction
functionCall11.13ns buffer create, add one chunk, delete
1.95nsbufferBasicAlloc Call a function that has not been inlined11.99ns getThreadId buffer create, alloc block 2.24nsin chunk, delete
bufferBasicCopy Retrieve thread id via ThreadId::get hashTableLookup 12812.86ns00ns Key lookup in a 1GB HashTablebuffer hashTableLookupPfcreate, copy small block, delete
78.07nsbufferCopy Key lookup in a 1GB HashTable with prefetching lfence 14.20ns copy out 2.82ns small chunks from buffer
LfencebufferExtendChunk instruction lockInDispThrd 4.06ns56ns Acquire/release Dispatch::Lock (in dispatch thread) lockNonDispThrdbuffer add onto existing chunk
bufferGetStart 214.54ns Acquire/release Dispatch::Lock (non-dispatch thread) memcpy100 3.34ns 8.78ns Buffer::getStart
bufferConstruct Copy 100 bytes with memcpy memcpy1000 5.84ns 37.37ns buffer stack Copyallocation
1000bufferReset bytes with memcpy memcpy10000 191.07ns 4.72ns Copy 10000 bytes with memcpy murmur3 Buffer::reset
bufferCopyIterator2 106.31ns67ns 128-bit MurmurHash3 (64-bit optimised) on 1buffer byteiterate ofover data2 murmur3copied chunks, accessing 1 byte each
bufferCopyIterator5 409.47ns18ns 128-bit MurmurHash3 hash (64-bit optimised) onbuffer 256iterate bytesover of5 datacopied objectPoolAllocchunks, accessing 1 byte each
bufferExternalIterator2 27.86ns 9.06ns Cost of new allocations from an ObjectPool (no destroys)buffer objectPoolReallociterate over 2 external chunks, 4.65ns accessing 1 byte each
bufferExternalIterator5 Cost of ObjectPool23.24ns allocation after destroying an object prefetch buffer iterate over 5 external chunks, accessing 1 byte each
condPingPong 34.72ns Prefetch instruction rdtsc 2.98us 6.70ns std::condition_variable round-trip
cppAtomicExchg Read the fine-grain cycle counter segmentEntrySort 75.02ms83ns Sort a Segment full of avg. 100-byte Objects by age
segmentIterator Exchange method on a C++ atomic_int
cppAtomicLoad 1.83ms Iterate a Segment full of avg0.65ns 100-byte Objects sfence Read a C++ atomic_int
cyclesToSeconds 1.39ns Sfence instruction spinLock6.13ns Convert a rdtsc result 16.17ns Acquire/release SpinLock
startStopTimerto (double) seconds
cyclesToNanos 14.76ns 6.35ns Start and stop a Dispatch::Timer spawnThread Convert a rdtsc result to (uint64_t) nanoseconds
dispatchPoll 9.89us Start and stop a thread throwInt 9.21ns 1.91us Throw an int
throwIntNLDispatch::poll (no timers or pollers)
div32 24.60us72ns Throw an int in a32-bit functioninteger calldivision throwExceptioninstruction
div64 1.84us Throw an Exception throwExceptionNL 220.58us15ns Throw an Exception in64-bit ainteger functiondivision callinstruction
throwSwitchfunctionCall 5.46us Throw1.67ns an Exception using ClientException::throwException vectorPushPop Call a function that has not 3.72nsbeen inlined
generateRandomNumber Push and pop a std::vector |
June 18, 2012
| No Format |
|---|
atomicIntCmpX 16.56ns 6.29nsCall to randomNumberGenerator(x)
genRandomString Atomic<int>::compareExchange atomicIntInc 51.93ns 49us Atomic<int>::inc atomicIntLoad Generate a random 100-byte value
0.56nsgetThreadId Atomic<int>::load atomicIntStore 0.59ns Atomic<int>::store
atomicIntXchg1.95ns Retrieve thread id 5.93ns Atomic<int>via ThreadId::exchangeget
bMutexNoBlockgetThreadIdSyscall 1441.92ns15ns std::mutex lock/unlock (no blocking) cppAtomicExchg Retrieve kernel thread id using syscall
hashTableLookup 5.93ns Exchange method on a C++ atomic_int
cppAtomicLoad 124.09ns Key 13.76nslookup in a 1GB Read a C++ atomic_int
cyclesToSecondsHashTable
hashTableLookupPf 773.04ns98ns Convert a rdtsc result to (double)Key secondslookup cyclesToNanosin a 1GB HashTable with prefetching
lfence 9.86ns Convert a rdtsc result to (uint64_t) nanoseconds dispatchPoll 2.92ns 8.17ns Dispatch::poll (no timers or pollers)
functionCall Lfence instruction
lockInDispThrd 12.98ns79ns Call a function that has not been inlined
getThreadId Acquire/release Dispatch::Lock (in dispatch thread)
lockNonDispThrd 1279.98ns30ns Retrieve thread id viaAcquire/release ThreadIdDispatch::get
hashTableLookup Lock (non-dispatch thread)
mapCreate 168.76ns Key lookup in a 1GB HashTable hashTableLookupPf 14322.19ns63ns Key lookup in a 1GB HashTableCreate+delete withentry prefetching
lfence in std::map
mapLookup 2.90ns 16.02ns Lfence instruction lockInDispThrd Lookup in std::map<uint64_t, 4.15nsuint64_t>
memcpyCached100 Acquire/release Dispatch::Lock (in dispatch thread) lockNonDispThrd 14.55ns 4.05ns Acquire/release Dispatch::Lock (non-dispatch thread)
murmur3 memcpy 100 bytes with hot/fixed dst and src
memcpyCached1000 1121.29ns82ns 128-bit MurmurHash3 (64-bit optimised) on 1memcpy byte1000 ofbytes datawith murmur3hot/fixed dst and src
memcpyCached10000 41185.17ns16ns 128-bit MurmurHash3 hash (64-bit optimised) onmemcpy 25610000 bytes ofwith datahot/fixed objectPoolAllocdst and src
memcpyCachedDst100 192.56ns Cost of new93.82ns allocations from an ObjectPool (no destroys) objectPoolRealloc memcpy 100 bytes 4.42ns Cost of ObjectPool allocation after destroying an object
prefetchwith hot/fixed dst and cold src
memcpyCachedDst1000 122.30ns memcpy 1000 bytes with 29.79ns Prefetch instruction
rdtschot/fixed dst and cold src
memcpyCachedDst10000 355.23ns memcpy 10000 bytes with hot/fixed dst 6.80nsand cold src
memcpyCold100 Read the fine-grain cycle counter segmentEntrySort 5372.18ms20ns Sort a Segment full of avg.memcpy 100-byte Objectsbytes bywith agecold segmentIteratordst and src
memcpyCold1000 1.08ms Iterate a Segment full of avg655.00ns 100-byte Objects sfence memcpy 1000 bytes with cold dst and src
memcpyCold10000 1.47ns Sfence instruction spinLock 3.18us memcpy 16.34ns10000 bytes with Acquire/release SpinLock
startStopTimercold dst and src
murmur3 15.03ns Start and stop a Dispatch::Timer throwInt 10.28ns 128-bit MurmurHash3 (64-bit optimised) on 1.97us byte of data
murmur3 Throw an int throwIntNL 2.44us 49.72ns Throw an int in a function call throwException 128-bit MurmurHash3 hash (64-bit optimised) on 256 bytes 1.88usof data
objectPoolAlloc Throw an Exception throwExceptionNL 229.60us16ns Throw an Exception in a functionCost of callnew throwSwitchallocations from an ObjectPool (no destroys)
objectPoolRealloc 5.09us Throw an4.48ns Exception using ClientException::throwException vectorPushPop Cost of ObjectPool allocation after 3.86nsdestroying an object
pingConditionVar Push and pop a std::vector |
July 18, 2011
| No Format |
|---|
atomicIntCmpX 6.26ns 1.56us AtomicInt::compareExchange atomicIntInc 6.05ns Round-trip ping with AtomicIntstd::inccondition_variable
prefetch atomicIntLoad 0.57ns AtomicInt::load atomicIntStore 0.58ns AtomicInt::store atomicIntXchg 635.06ns20ns AtomicInt::exchange bMutexNoBlock 14.66nsPrefetch instruction
rdtsc Boost mutex lock/unlock (no blocking) cppAtomicExchg 5.93ns Exchange method on a C++ atomic_int cppAtomicLoad 136.66ns67ns Read a C++ atomic_int dispatchPoll Read the 7.62ns Dispatch::poll (no timers or pollers)
getThreadIdfine-grain cycle counter
segmentEntrySort 28.27ns14ms Retrieve thread id via ThreadId::get
lfence Sort a Segment full of avg. 100-byte Objects by age
segmentIterator 2.84ns Lfence instruction lockInDispThrd 71.05ns97ms Acquire/release Dispatch::Lock (in dispatch thread) lockNonDispThrdIterate a 252.79nsSegment full Acquire/release Dispatch::Lock (non-dispatch thread)
sfenceof avg. 100-byte Objects
sessionRefCount 1.50ns12.55ns Sfence instruction spinLockCreate/delete SessionRef
serialize 16.46ns Acquire/release SpinLock
|
Misc
Some 2.3GHz Xeon, 2011-08-23
| No Format |
|---|
atomicIntCmpX 1055.63ns34ns AtomicInt::compareExchange atomicIntInc 8.71nscpuid instruction for serialize
AtomicInt::incsfence atomicIntLoad 0.44ns AtomicInt::load atomicIntStore 0.43ns AtomicInt::store atomicIntXchg 71.83ns39ns AtomicInt::exchange bMutexNoBlock 42.26nsSfence instruction
spinLock Boost mutex lock/unlock (no blocking) cppAtomicExchg 7.97ns Exchange method on a C++ atomic_int
cppAtomicLoad 18.90ns 7.69ns Read a C++ atomic_int
cyclesToSeconds 10.42nsAcquire/release SpinLock
startStopTimer Convert a rdtsc result to (double) seconds cyclesToNanos56.46ns 14.49ns Convert a rdtscStart resultand to (uint64_t) nanoseconds
dispatchPollstop a Dispatch::Timer
spawnThread 20.41ns Dispatch::poll (no timers or pollers) functionCall 38.05ns90us Call a function that has notStart beenand inlinedstop getThreadIda thread
throwInt 3.04ns Retrieve thread id via ThreadId::get lfence 42.79ns02us Lfence instruction lockInDispThrd 6.10nsThrow an int
Acquire/release Dispatch::Lock (in dispatch thread)
lockNonDispThrd 283.43ns Acquire/release Dispatch::Lock (non-dispatch thread)
sfencethrowIntNL 2.48us 3.60ns Throw Sfencean instructionint spinLockin a function call
throwException 25.17ns Acquire/release SpinLock throwInt 1.97us 3.32us Throw an intException
throwIntNLthrowExceptionNL 4.54us Throw 2.78us Throw an intException in a function call
throwException
throwSwitch 3.43us6.05us Throw an Exception
throwExceptionNL 4.69us using ClientException::throwException
timeTrace Throw an Exception in a function call throwSwitch 6.45us15.93ns ThrowRecord an Exceptionevent using ClientException::throwException
TimeTrace
unorderedMapCreate 72.63ns Create+delete entry in unordered_map
unorderedMapLookup 13.07ns Lookup in std::unordered_map<uint64_t, uint64_t>
vectorPushPop 3.80ns Push and pop a std::vector |
June 9, 2014
| No Format |
|---|
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 |
June 18, 2012
| No Format |
|---|
atomicIntCmpX 6.29ns Atomic<int>::compareExchange
atomicIntInc 5.93ns Atomic<int>::inc
atomicIntLoad 0.56ns Atomic<int>::load
atomicIntStore 0.59ns Atomic<int>::store
atomicIntXchg 5.93ns Atomic<int>::exchange
bMutexNoBlock 14.92ns std::mutex lock/unlock (no blocking)
cppAtomicExchg 5.93ns Exchange method on a C++ atomic_int
cppAtomicLoad 13.76ns Read a C++ atomic_int
cyclesToSeconds 7.04ns Convert a rdtsc result to (double) seconds
cyclesToNanos 9.86ns Convert a rdtsc result to (uint64_t) nanoseconds
dispatchPoll 8.17ns Dispatch::poll (no timers or pollers)
functionCall 1.98ns Call a function that has not been inlined
getThreadId 1.98ns Retrieve thread id via ThreadId::get
hashTableLookup 168.76ns Key lookup in a 1GB HashTable
hashTableLookupPf 143.19ns Key lookup in a 1GB HashTable with prefetching
lfence 2.90ns Lfence instruction
lockInDispThrd 4.15ns Acquire/release Dispatch::Lock (in dispatch thread)
lockNonDispThrd 4.05ns Acquire/release Dispatch::Lock (non-dispatch thread)
murmur3 11.29ns 128-bit MurmurHash3 (64-bit optimised) on 1 byte of data
murmur3 41.17ns 128-bit MurmurHash3 hash (64-bit optimised) on 256 bytes of data
objectPoolAlloc 192.56ns Cost of new allocations from an ObjectPool (no destroys)
objectPoolRealloc 4.42ns Cost of ObjectPool allocation after destroying an object
prefetch 29.79ns Prefetch instruction
rdtsc 6.80ns Read the fine-grain cycle counter
segmentEntrySort 5.18ms Sort a Segment full of avg. 100-byte Objects by age
segmentIterator 1.08ms Iterate a Segment full of avg. 100-byte Objects
sfence 1.47ns Sfence instruction
spinLock 16.34ns Acquire/release SpinLock
startStopTimer 15.03ns Start and stop a Dispatch::Timer
throwInt 1.97us Throw an int
throwIntNL 2.44us Throw an int in a function call
throwException 1.88us Throw an Exception
throwExceptionNL 2.60us Throw an Exception in a function call
throwSwitch 5.09us Throw an Exception using ClientException::throwException
vectorPushPop 3.86ns Push and pop a std::vector
|
July 18, 2011
| No Format |
|---|
atomicIntCmpX 6.26ns AtomicInt::compareExchange
atomicIntInc 6.05ns AtomicInt::inc
atomicIntLoad 0.57ns AtomicInt::load
atomicIntStore 0.58ns AtomicInt::store
atomicIntXchg 6.06ns AtomicInt::exchange
bMutexNoBlock 14.66ns Boost mutex lock/unlock (no blocking)
cppAtomicExchg 5.93ns Exchange method on a C++ atomic_int
cppAtomicLoad 13.66ns Read a C++ atomic_int
dispatchPoll 7.62ns Dispatch::poll (no timers or pollers)
getThreadId 2.27ns Retrieve thread id via ThreadId::get
lfence 2.84ns Lfence instruction
lockInDispThrd 7.05ns Acquire/release Dispatch::Lock (in dispatch thread)
lockNonDispThrd 252.79ns Acquire/release Dispatch::Lock (non-dispatch thread)
sfence 1.50ns Sfence instruction
spinLock 16.46ns Acquire/release SpinLock
|
Misc
Some 2.3GHz Xeon, 2011-08-23
| No Format |
|---|
atomicIntCmpX 10.63ns AtomicInt::compareExchange
atomicIntInc 8.71ns AtomicInt::inc
atomicIntLoad 0.44ns AtomicInt::load
atomicIntStore 0.43ns AtomicInt::store
atomicIntXchg 7.83ns AtomicInt::exchange
bMutexNoBlock 42.26ns Boost mutex lock/unlock (no blocking)
cppAtomicExchg 7.97ns Exchange method on a C++ atomic_int
cppAtomicLoad 7.69ns Read a C++ atomic_int
cyclesToSeconds 10.42ns Convert a rdtsc result to (double) seconds
cyclesToNanos 14.49ns Convert a rdtsc result to (uint64_t) nanoseconds
dispatchPoll 20.41ns Dispatch::poll (no timers or pollers)
functionCall 3.05ns Call a function that has not been inlined
getThreadId 3.04ns Retrieve thread id via ThreadId::get
lfence 4.79ns Lfence instruction
lockInDispThrd 6.10ns Acquire/release Dispatch::Lock (in dispatch thread)
lockNonDispThrd 283.43ns Acquire/release Dispatch::Lock (non-dispatch thread)
sfence 3.60ns Sfence instruction
spinLock 25.17ns Acquire/release SpinLock
throwInt 3.32us Throw an int
throwIntNL 4.54us Throw an int in a function call
throwException 3.43us Throw an Exception
throwExceptionNL 4.69us Throw an Exception in a function call
throwSwitch 6.45us Throw an Exception using ClientException::throwException
|
bufferAppendCopy50 8.93ns appendCopy 50 bytes to a bufferbufferAppendCopy100 8.47ns appendCopy 100 bytes to a bufferbufferAppendCopy250 16.74ns appendCopy 250 bytes to a bufferbufferAppendCopy500 20.90ns appendCopy 500 bytes to a bufferbufferAppendExternal1 8.13ns appendExternal 1 byte to a bufferbufferAppendExternal50 8.15ns appendExternal 50 bytes to a bufferbufferAppendExternal100 7.84ns appendExternal 100 bytes to a bufferbufferAppendExternal250 7.76ns appendExternal 250 bytes to a bufferbufferAppendExternal500 8.25ns appendExternal 500 bytes to a bufferbufferBasic 10.88ns buffer create, add one chunk, deletebufferBasicAlloc 12.29ns buffer create, alloc block in chunk, deletebufferBasicCopy 12.02ns buffer create, copy small block, deletebufferCopy 14.25ns copy out 2 small chunks from bufferbufferExtendChunk 4.69ns buffer add onto existing chunkbufferGetStart 3.41ns Buffer::getStartbufferConstruct 5.90ns buffer stack allocationbufferReset 4.79ns Buffer::resetbufferCopyIterator2 6.46ns buffer iterate over 2 copied chunks, accessing 1 byte eachbufferCopyIterator5 8.71ns buffer iterate over 5 copied chunks, accessing 1 byte eachbufferExternalIterator2 8.96ns buffer iterate over 2 external chunks, accessing 1 byte eachbufferExternalIterator5 23.46ns buffer iterate over 5 external chunks, accessing 1 byte eachcondPingPong 3.09us std::condition_variable round-tripcppAtomicExchg 6.64ns Exchange method on a C++ atomic_intcppAtomicLoad 0.60ns Read a C++ atomic_intcyclesToSeconds 6.30ns Convert a rdtsc result to (double) secondscyclesToNanos 6.32ns Convert a rdtsc result to (uint64_t) nanosecondsdispatchPoll 9.36ns Dispatch::poll (no timers or pollers)div32 4.79ns 32-bit integer division instructiondiv64 20.22ns 64-bit integer division instructionfunctionCall 1.74ns Call a function that has not been inlinedgenerateRandomNumber 17.21ns Call to randomNumberGenerator(x)genRandomString 1.49us Generate a random 100-byte valuegetThreadId 1.73ns Retrieve thread id via ThreadId::getgetThreadIdSyscall 41.04ns Retrieve kernel thread id using syscallhashTableLookup 123.41ns Key lookup in a 1GB HashTablehashTableLookupPf 70.57ns Key lookup in a 1GB HashTable with prefetchinglfence 3.00ns Lfence instructionlockInDispThrd 3.52ns Acquire/release Dispatch::Lock (in dispatch thread)lockNonDispThrd 324.23ns Acquire/release Dispatch::Lock (non-dispatch thread)mapCreate 21.15ns Create+delete entry in std::mapmapLookup 14.87ns Lookup in std::map<uint64_t, uint64_t>memcpyCached100 14.52ns memcpy 100 bytes with hot/fixed dst and srcmemcpyCached1000 21.79ns memcpy 1000 bytes with hot/fixed dst and srcmemcpyCached10000 185.40ns memcpy 10000 bytes with hot/fixed dst and srcmemcpyCachedDst100 93.36ns memcpy 100 bytes with hot/fixed dst and cold srcmemcpyCachedDst1000 122.05ns memcpy 1000 bytes with hot/fixed dst and cold srcmemcpyCachedDst10000 356.61ns memcpy 10000 bytes with hot/fixed dst and cold srcmemcpyCold100 377.18ns memcpy 100 bytes with cold dst and srcmemcpyCold1000 659.35ns memcpy 1000 bytes with cold dst and srcmemcpyCold10000 3.18us memcpy 10000 bytes with cold dst and srcmurmur3 10.96ns 128-bit MurmurHash3 (64-bit optimised) on 1 byte of datamurmur3 50.44ns 128-bit MurmurHash3 hash (64-bit optimised) on 256 bytes of dataobjectPoolAlloc 29.52ns Cost of new allocations from an ObjectPool (no destroys)objectPoolRealloc 4.57ns Cost of ObjectPool allocation after destroying an objectpingConditionVar 1.61us Round-trip ping with std::condition_variableprefetch 35.85ns Prefetch instructionqueueEstimator 2.23ns Recompute # bytes outstanding in queuerdtsc 6.74ns Read the fine-grain cycle countersegmentEntrySort 8.38ms Sort a Segment full of avg. 100-byte Objects by agesegmentIterator 2.09ms Iterate a Segment full of avg. 100-byte ObjectssessionRefCount 12.59ns Create/delete SessionRefserialize 55.41ns cpuid instruction for serializesfence 1.41ns Sfence instructionspinLock 9.60ns Acquire/release SpinLockstartStopTimer 33.43ns Start and stop a Dispatch::TimerspawnThread 8.89us Start and stop a threadthrowInt 2.07us Throw an intthrowIntNL 2.55us Throw an int in a function callthrowException 2.03us Throw an ExceptionthrowExceptionNL 2.81us Throw an Exception in a function callthrowSwitch 6.04us Throw an Exception using ClientException::throwExceptiontimeTrace 7.56ns Record an event using TimeTraceunorderedMapCreate 79.05ns Create+delete entry in unordered_mapunorderedMapLookup 14.62ns Lookup in std::unordered_map<uint64_t, uint64_t>vectorPushPop 3.90ns Push and pop a std::vector