Re: improving nfs client & server performance

Hi Rick, thanks for replying

On Mon, Oct 21, 2024 at 09:17:05AM -0700, Rick Macklem wrote:

>There are lots of possibilities, but here are a couple to try...
>vfs.zfs.dmu_offset_next_sync=0    - this makes SEEK_HOLE/SEEK_DATA
>much faster, but less reliable (as in it might miss finding a hole)

>vfs.nfsd.cachetcp=0 - this disables the DRC cache for TCP connections
>(if this helps, there are settings to try to tune he DRC).
>Disabling the DRC for TCP means that there is a
>slight chance of corruption, due to duplicate
>non-idempotent RPCs being done after a TCP reconnect. Has no
>effect on NFSv4.1/4.2 mounts.

How can I tell what version NFS mount it has?
rpcinfo nfs-server-ip shows versions 4,3,2,1
--