I'm trying to troubleshoot slow write speeds on an NFS Share hosted on a Windows2012R2 Standard
Server:
Windows Server 2012 R2 Standard 6.3.9600
Using Services for NFS (v3)
Client:
OSX Mojave
Mount Options:
/mount/path -fstype=nfs,intr,noresvport,nolocks,locallocks,soft,vers=3,rsize=1048576,wsize=1048576,rdirplus,async nfs://svr/share
We use AD for authentication on both the server and the client.
The NFS share uses Kerberos v5 for auth (krb5)
NFS permission is set to ALL MACHINES (read/write)
There doesn't seem to be any errors in the Event Viewer.
Read speeds are decent from the NFS server share. (250Mbps)
Write speeds are significantly slower (50Mbps)
Both are poor compared to the same folder shared via SMB (550Mbps both directions)