go-benchmark
Golang benchmarks used for optimizing code. The benchmarks were run with Golang 1.20.6 and 64 bit CPU on Linux using make benchmark-perflock.
interface{} vs unsafe.Pointer
ValueUnsafePointer-8 33.33n ± 4%
ValueInterface-8 180.2n ± 5%
Using defer vs not using it
Defer-8 284.2n ± 7%
DeferNo-8 26.45n ± 1%
Iterating a slice
SliceReadRange-8 19.71n ± 3%
SliceReadForward-8 25.89n ± 2%
SliceReadBackwards-8 46.48n ± 3%
SliceReadLastItemFirst-8 32.82n ± 4%
Passing a parameter by value vs pointer
ParameterPassedByPointer-8 8.391n ± 5%
ParameterPassedByValue-8 8.755n ± 3%
Using reflect vs cast
Reflect-8 253.5n ± 5%
Cast-8 181.1n ± 5%
Hashing algorithms that produce a 64 bit hash of an 8 byte input
Hashing64MD5-8 140.5n ± 1%
Hashing64SHA1-8 153.8n ± 2%
Hashing64SHA256-8 202.1n ± 2%
Hashing64SHA3B224-8 667.0n ± 1%
Hashing64SHA3B256-8 663.7n ± 1%
Hashing64RIPEMD160-8 328.6n ± 1%
Hashing64Blake2B-8 357.9n ± 3%
Hashing64Blake2BSimd-8 316.1n ± 3%
Hashing64Murmur3-8 55.27n ± 3%
Hashing64Murmur3Twmb-8 55.00n ± 1%
Hashing64SipHash-8 52.53n ± 1%
Hashing64XXHash-8 36.08n ± 1%
Hashing64XXHashpier-8 37.45n ± 1%
Hashing64HighwayHash-8 89.78n ± 1%
Filling a slice by index or append
SliceFillByIndex-8 15.28n ± 0%
SliceFillByIndexMake-8 15.28n ± 0%
SliceFillMakeAppend-8 34.77n ± 1%
SliceFillAppendNoMake-8 253.5n ± 3%
SliceFillSmallMakeAppend-8 308.5n ± 1%
Writing and reading an int atomic
AtomicInt32-8 924.3n ± 1%
AtomicInt64-8 923.9n ± 0%
AtomicUintptr-8 923.2n ± 0%