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

[Sam James <sam@gentoo.org>]

[-- Attachment #1: Type: text/plain, Size: 997 bytes --]



> On 8 Nov 2022, at 08:52, Jakub Jelinek <jakub@redhat.com> wrote:
> 
> On Tue, Nov 08, 2022 at 07:40:02AM +0000, Sam James wrote:
>>> On 8 Nov 2022, at 07:33, Xi Ruoyao <xry111@xry111.site> wrote:
>>> I'm wondering if running xz -T0 on different machines (with different
>>> core numbers) may produce different compressed data.  The difference can
>>> cause trouble distributing checksums.
>>> 
>> 
>> Your question is a good one - xz -T0 produces different results to xz -T1
>> but:
>> 1. The tarballs for GCC are only created on one machine and aren't
>> created repeatedly then compared with each other wrt mirroring;
> 
> No, that is not the case.
> While the snapshots are created on sourceware locally, GCC releases (and
> release candidates) are typically created on some RM's local machine.

We've misinterpreted each other. I mean the same tarball isn't then
recreated repeatedly and different copies uploaded to mirrors.

Obviously different machines may be used at different points.

[-- Attachment #2: Message signed with OpenPGP --]
[-- Type: application/pgp-signature, Size: 358 bytes --]