I am having a problem with NIS/NFS under fedora core 2. NIS/NFS is slow. I am pretty sure it is NIS that is causing the problem but I am unsure. Logins take 10-20 seconds and automounts of home directories take 3-4 seconds. Under fedora core 1 I do not have this problem nor do I have it in redhat 9 or suse 9.1.

I have tried going to fedora core 2 a couple ways and all of them have this same problem. I have tried a fresh install, and upgrade from redhat 9 via CD, upgrade from core 1 via CD, and an upgrade from core 1 via yum. I have tried about 50 different kernels and have basically gutted everything from it. I have the latest ypserv on the NIS NFS server (redhat 9) and the latest ypbind on the client.

When I turn off ypbind the local logins are much faster. I have nsswitch.conf set up to look at files before NIS.

Anyone have any suggestions or know a good deal about what was added in core 2 dealing with NIS/NFS that might cause the problem?

SOLVED!

Here is the solution in case anyone else has a problem simalar to this.


Fedora core 2 attempts to do NFS mounts over TCP by default. I am using an older NFS server and can't put NFS over TCP. So Fedora core 2 would attempt TCP and wait for it to time out before trying UDP.

To fix this i adjusted my NIS auto.master map by adding udp to the end of the mount which gets passed as a -o option to mount forcing it onto udp.