Bug 80018: NFSv4 on RHEL 6.2 over six times slower than 5.7

[m.roth at 5-cent.us]

For any redhatters on the list, I'm going to be reopening this bug today.

I am also VERY unhappy with Redhat. I filed the bug months ago, and it was
*never* assigned - no one apparently even looked at it. It's a
show-stopper for us, since it hits us on our home directory servers.

A week or so ago, I updated our test system to 6.3, and *nothing* has
changed. Unpack a large file locally, and it's seconds. Unpack from an
NFS-mounted directory to a local disk takes about 1.5min. NFS mount either
an ext3 or ext4 fs, cd to that directory, and I run a job to unpack a
large file to the NFS-mounted directory, and it's between 6.5 and 7.5
*MINUTES*. We cannot move our home directory servers to 6.x with this
unacknowledged ->BUG<-.

Large file is defined as a 28M .gz file, unpacked to 92M.

This is 100% repeatable.

I tried sending an email to our support weeks ago, and got no response.
Maybe it takes shaming in a public forum to get anyone to acknowledge this
exists....

         mark