Re: Writing large build logs to NFS extremely slow?

Is the NFS mounted filesystem NFS?  I've found NFS mounted ZFS has several
pathologies like this when there is no SSD cache and/or log vdevs attached.

On Wed, Oct 6, 2021 at 10:18 PM Felix Palmen <felix@palmen-it.de> wrote:

> Hi all,
>
> I use a -CURRENT bhyve vm for testing port builds with poudriere. As
> this vm is only running when needed, but I want to always have access to
> the build logs, I use NFS to mount /usr/local/poudriere/data/logs from
> the host.
>
> I noticed some few ports take ridiculously long to build while barely
> using any CPU time at all. On a closer look, that's all ports producing
> a lot of compiler (warning) output, e.g. gcc, gnutls, gtk2, …
>
> So I assume appending to a large file via NFS gets slower and slower. Is
> there any mount option I could try to fix this? Right now I only have
> `nolockd`, I also tried `noncontigwr` which didn't change anything.
>
> Thinking about alternatives to NFS, are there any news for client-side
> 9p virtfs? I found <https://github.com/swills/virtfs-9p-kmod> which
> still builds with a few minor adaptions, but trying to mount a 9p share
> freezes the machine.
>
> Would you suggest a different mailing list to ask?
>
> BR, Felix
>
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