Description of problem:
Each ganesha export with FSAL_GLUSTER consumes 3-10% CPU.

I have just found these two notions of this issue on the internet with no solution yet.
http://lists.gluster.org/pipermail/gluster-users.old/2016-November/028939.html
https://github.com/nfs-ganesha/nfs-ganesha/issues/124


Version-Release number of selected component (if applicable):
nfs-ganesha-2.3.3-1.el7.x86_64
nfs-ganesha-gluster-2.3.3-1.el7.x86_64
glusterfs-ganesha-3.8.13-1.el7.x86_64


Steps to Reproduce:
1. Create a gluster volume, disable gnfs
2. Create ganesha configuration
3. Start nfs-ganesha service
4. Observe a thread which is consuming CPU

Additional info:
Sample export config:
EXPORT{
	Export_Id= 19 ;
	Path = "/clientmounts/replicated/test";
	FSAL {
		name = GLUSTER;
		hostname="localhost";
		volume="storage-replicated";
		volpath="/clientmounts/test";
	}
	Access_type = RW;
	Disable_ACL = true;
	Squash="No_root_squash";
	Pseudo="/clientmounts/replicated/test";
	Protocols = "3", "4" ;
	Transports = "UDP","TCP";
	SecType = "sys";
}