去GC奇怪的行为

We have several services written in Go. After running for several weeks we find that occasionally the heap size keeps increasing. We added some instrumentation to find out that this is due to a reduction is GC frequency.

We are using Go 1.8. I am not sure if this is a bug in Go GC or something that we have written is triggering this behavior. Any pointers, tips would be helpful.

Never guess bad performance reasons before profiling. Here are instruments https://golang.org/doc/diagnostics.html#profiling