Re: [PATCH] maintainer-scripts/gcc_release: compress xz in parallel

[Sam James <sam@gentoo.org>]

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> On 8 Nov 2022, at 07:14, Sam James <sam@gentoo.org> wrote:
> 
> 1. This should speed up decompression for folks, as parallel xz
>   creates a different archive which can be decompressed in parallel.
> 
>   Note that this different method is enabled by default in a new
>   xz release coming shortly anyway (>= 5.3.3_alpha1).
> 
>   I build GCC regularly from the weekly snapshots
>   and so the decompression time adds up.
> 
> 2. It should speed up compression on the webserver a bit.
> 
>   Note that -T0 won't be the default in the new xz release,
>   only the parallel compression mode (which enables parallel
>   decompression).
> 
>   -T0 detects the number of cores available.
> 
>   So, if a different number of threads is preferred, it's fine
>   to set e.g. -T2, etc.
> 
> Signed-off-by: Sam James <sam@gentoo.org>
> ---
> maintainer-scripts/gcc_release | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/maintainer-scripts/gcc_release b/maintainer-scripts/gcc_release
> index 2456908d716..962b8efe99a 100755
> --- a/maintainer-scripts/gcc_release
> +++ b/maintainer-scripts/gcc_release
> @@ -609,7 +609,7 @@ FILE_LIST=""
> # Programs we use.
> 
> BZIP2="${BZIP2:-bzip2}"
> -XZ="${XZ:-xz --best}"
> +XZ="${XZ:-xz -T0 --best}"
> CVS="${CVS:-cvs -f -Q -z9}"
> DIFF="${DIFF:-diff -Nrcpad}"
> ENV="${ENV:-env}"
> --
> 2.38.1
> 

ping

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