High-Load CGo: Calling Nonblocking C/C++ Code Without Surprise
summary
The talk explains pitfalls and techniques for calling non-blocking C/C++ code from Go using cgo, focusing on cases like async OS I/O and CPU-heavy tasks (compression, crypto, math). It covers how cgo interacts with Go's scheduler and threads and presents practical approaches to avoid unexpected blocking when integrating C/C++ libraries into high-load Go services.
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chapters (11)
- 0:00Introduction
- 2:17CGO load problems
- 5:26How CGO works
- 7:59Goroutine carousel effect
- 11:13Goroutine limiting fix
- 13:40Nonblocking calls without assembly
- 17:31Implementing blocking calls
- 20:41Benchmark method comparison
- 22:45Final solution comparison
- 23:51Summary and recommendations
- 24:57Q&A
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