Mark Wielaard <mark@klomp.org> writes:

> Use parallel compression to create the xz archive.
>
> On my machine (using 4 cores) this reduces the time to create
> binutils-2.42.50.tar.xz from 1 minute 40 seconds to 56 seconds.
>
> xz has supported -T0 since version 5.2.0 (released 2014-12-21).

LGTM and it's the default from >=5.6.0 anyway. For >=5.4.0, you can use
it for parallel *de*compression too.

> ---
>  src-release.sh | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/src-release.sh b/src-release.sh
> index e454893298da..f29362aac207 100755
> --- a/src-release.sh
> +++ b/src-release.sh
> @@ -239,7 +239,7 @@ do_xz()
>      ver=$2
>      echo "==> Xzipping $package-$ver.tar.xz"
>      rm -f $package-$ver.tar.xz
> -    $XZPROG -k -v -9 $package-$ver.tar
> +    $XZPROG -k -v -9 -T0 $package-$ver.tar
>  }
>  
>  # Compress the output with zstd