Comment 5 for bug 1047566

I am also experiencing this bug on 12.04 amd64 with 3.2.0-26-generic and 3.2.0-27-generic. I am running an NFS server and a Samba server. Similar to the original reporter I am serving many small files from an ext4 partition to a number of NFS clients. I believe they are almost exclusively using NFSv3. This server has 6GB of RAM, which idr_layer_cache will consume entirely until the OOM killer is invoked. The only workaround I have found so far is rebooting the server. What other debug information can I provide to help resolve this bug?

Attached is the output of nfsstat.