Re: RFC: How ZFS handles arc memory use

Am 2025-10-29 22:06, schrieb Doug Ambrisko:
> It seems around the switch to OpenZFS I would have arc clean task 
> running
> 100% on a core.  I use nullfs on my laptop to map my shared ZFS /data
> partiton into a few vnet instances.  Over night or so I would get into
> this issue.  I found that I had a bunch of vnodes being held by other
> layers.  My solution was to reduce kern.maxvnodes and vfs.zfs.arc.max 
> so
> the ARC cache stayed reasonable without killing other applications.
> 
> That is why a while back I added the vnode count to mount -v so that
> I could see the usage of vnodes for each mount point.  I made a script
> to report on things:

Do you see this also with the nullfs mount option "nocache"?

Bye,
Alexander.

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