vlad-tokarev / 1brc-go

Portable (without ASM and unsafe) solution for 1brc challenge in Golang. https://github.com/gunnarmorling/1brc

About

Solution in Go for 1BRC challenge

Optimisations:

• Custom float64 parser (to avoid string allocations)
• Use fixed size [N]byte array for map keys (to avoid string allocations)
• Parallelization: map-reduce approach

Performance

Machine:

• Chip: Apple M1 Max
• Total Number of Cores: 10 (8 performance and 2 efficiency)
• Memory: 32 GB

Results:

• 1 Goroutine: took 1m18.318s
• 10 Goroutines: took 13.077s