In the last episode (May 19), Eric Anderson said:
> I have several heavily used NFS servers, currently running FreeBSD
> 4.9-RELEASE. I'm getting jammed up with all my nfsd processes being
> busy, so clients see slow connections to the server. I have the nfsd
> starting with a count of 20, which is the max set in the nfsd.c file.
> Are there any risks I should be aware of before bumping up the max to
> say 40, or even 50?
> What would it take to make this a sysctl adjustable value?
> Should the max be bumped higher by default nowdays?
What's the output of "ps ax | grep nfsd"? How much CPU does the last
nfsd process have?
If your backend storage is a RAID with lots of disks, and your last
nfsd is actually getting some use, then bumping up the nfsds will
probably help. Although if you're hitting a kernel bottleneck (locking
for example), more nfsds won't do any good.
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