Thank you for your feedback.
I found this on zstd code that also help a lot:
So I will check (not sure yet how ) if zstd packaged in ubuntu Jammy is compiled with threading support.
Thank you again for your help and time.
Didier
Re: Didier Michel
> Sorry, I did not include previous message:
> With focal and Jammy, pg_basebackup returns another error when I try to use
> several workers (ie "--compress=zstd:level=5,workers=2")
>
> pg_basebackup: checkpoint completed
> pg_basebackup: error: could not set compression worker count to 2:
> Unsupported parameter
Try without the workers part? I guess that needs a yet newer zstd
version.
Christoph