Potential Memory Leak about dufs

[sigoden]

@pauldeng

The OS can take a while to release memory or may not release it until it needs too. There is nothing specific here and its likely just what your os is setup to do. Its quite common to see memory increases like this. You can try to use valgrind to see if there are actually any leaks.

The following test can prove whether dufs has a memory leak:

1. Run dufs with docker and limit the memory to 20m

docker run -d --name dufs -p 5000:5000 -m 20m sigoden/dufs

2. Generate loads

 while true; do ab -n 20000 -c 30 http://localhost:5000/; done

If dufs has a memory leak, the docker container will be killed due to OOM. But from my own actual test, this is not the case.

So dufs does not have a memory leak.