Re: Severe netbsd-6 NFS server-side performance issues

[christos%astron.com@localhost (Christos Zoulas)]

In article <201205302351.q4UNpATN022113%lothlorien.nfbcal.org@localhost>,
Brian Buhrow <buhrow%lothlorien.nfbcal.org@localhost> wrote:
>Hello.  I went back and re-read your original message.  It would be
>interesting to know what those nfsd's are doing when they're in d state.
>What does ps -l show?   Is it possible to build a kernel with debugging
>symbols and then get things in a plugged up state, then drop into the ddb
>debugger and get a crash dump?  If you can do that, then gdb can be used on
>the crash file after the fact to determine what each process is doing at
>the time of the crash.  I still think it has something to do with the raid
>controller even if it's not obvious.  Is anyone else using the crazy
>version of firmware you picked up?
>       Also, what happens if you run two or more bonnie processes
>simultaneously?  That ought to stress the raid out and help demonstrate the
>problem.
>-Brian

Maybe some disks turned async? Or is nfsd really trashing the system?
It could be an nfsd regression too.

christos