Trouble with NFSd under 6.1-Stable, any ideas?

[Stephen Hurd]

Howard Leadmon wrote:
>    Hello All, 
>
>  I have been running FBSD a long while, and actually running since the 5.x
> releases on the server I am having troubles with.   I basically have a small
> network and just use NIS/NFS to link my various FBSD and Solaris machines
> together.
>
>  This has all been running fine up till a few days ago, when all of a sudden
> NFS came to a crawl, and CPU usage so high the box appears to freeze almost.
> When I had 6.1-RC running all seemed well, then came the announcement for the
> official 6.1 release, so I did the cvs updates, made world, kernel, and ran
> mergemaster to get everything up to the 6.1 stable version.
>
>  Now after doing this, something is wrong with NFS.   It works, it will return
> information and open files, just it's very very slow, and while performing a
> request the CPU spike is astounding.  A simple du of my home directory can
> take minutes, and machine all but locks up if the request is done over NFS.
> Here is top snip:
>
>   PID USERNAME   THR PRI NICE   SIZE    RES STATE  C   TIME   WCPU COMMAND
>   497 root         1   4    0  1252K   780K -      2  50:42 188.48% nfsd
>
>
>  This is a nice IBM eServer with dual P4-XEON's and a couple GB or RAM on a
> disk array, and locally is screams, heck NFS used to scream till I updated.  I
> am not really sure what info would be useful in debugging, so won't post tons
> of misc junk in this eMail, but if anyone has any ideas as to how best to
> figure out and resolve this issue it would sure be appreicated...
>   
Are you running rpc.lockd?  I've had very bad luck with it since 
sometime in the 5.x series... especially with it interoperating with 
Solaris.  I submitted a PR on it, but it's apparently broken in about X 
ways.  If possible, I would suggest living without rpc.lockd for now (if 
you're currently living with it that is)

Other than that issue, NFS itself has been working nicely for me.