Re: Can ZFS ARC be run with roundrobin policy?

From: Peter 'PMc' Much <pmc_at_citylink.dinoex.sub.org>
Date: Tue, 19 Nov 2024 00:32:32 UTC 
On 2024-11-03, Graham Perrin <grahamperrin@gmail.com> wrote:
> On 15/07/2024 12:23, Peter wrote:
>
>> Hi,
>>    from what I perceive, the ZFS ARC allocates in firsttouch
>> policy, …
>
>> … not always to my liking. I would prefer roundrobin
>> allocations here. But, I didn't easily find a switch, and, reading
>> into the UMA allocator, it states that it can do roundrobin, but it is
>> not so easily figured how that be made happen in practice.
>>
>> Pointers on where I might look into, are welcome.
>
>
> Does <https://github.com/openzfs/zfs/pull/14437> (closed in 2023) help 
> to shape your thoughts?
>
>> Specify a balanced NUMA policy for kernel buffers on FreeBSD by 
>> markjdb · Pull Request #14437 · openzfs/zfs

Wow, cool finding!
It shows very much the same as what I already did in the meantime,
while wondering why it is not even documented in the uma(9) manpage but
then seems to work nevertheless.