Memory analysis in Go

Generic references and points to consider when doing a memory analysis with go programming language.

• Do pprof memory profiling.

• Go returns memory to OS gradually. Typical time is ~5 minutes. If immediate return is needed, we could use FreeOSMemory. General recommendation is that if this is needed, manage memory alternatively.

• Alternative for frequent allocated and reused objects is sync.Pool usage. This is tricky and have to be careful when doing this. Sample usage can be found in blog.

• Excellant High performance go tips are avilable at this post. This talks about memory and GC too.

• Garbage collection behaviour is well explianed at: Ardan labs Post 1, Post 2 and Post 3. Also there is this keynote explaining the evolution of Go’s garbage collector.