nfsd startup configuration

[Royal]

We have a number of "N" class servers that are having performance problems with bringing up "TCL/TK" applications. These systems have the basic /dev/vg00 loaded with some minor applicaitons loaded, ie TCL/TK-Wish. They have plently of Memory free, CPU run queue is on average 1.5 per processor and plently of local swap allocated. I noticed that there are about 28 NFS mouunted file systems and that we have "NUM_NFSD" and "NUM_NFSIOD" set to 16. Would it help with I/O to increase these values to 28 or more?

[Steven E. Protter · Accepted solution]

If you commonly use more than 16 connections, startup performance would be improved by starting up morer nfsd daemons.

Note, it will take nfs longer to start at boot or to restart. There could be a performance impact on a busy or overloaded machine.

Having the daemon running will help new connects come off somewhat faster, other things being equal.

Network congestion can make NFS a nightmare, you may wish to check for that.

SEP

[Royal]

Thank you. I'm not sure that this is the problem but it does answer the question about setting the NFS parms to allow for better though put.