Date: Fri, 13 Dec 2024 22:35:12 +0100 From: Tomek CEDRO <tomek@cedro.info> To: Ed Maste <emaste@freebsd.org> Cc: FreeBSD Current <freebsd-current@freebsd.org> Subject: Re: Switching release media dist sets to .tzst (tar + zstd)? Message-ID: <CAFYkXjmtyNuf6dTfiswOdOUY%2BZAJfs4xW4s5HXvS%2BRjczFjGGA@mail.gmail.com> In-Reply-To: <CAPyFy2AXee_Y2xei176VAcW6peC0x=waxfPap%2B3uGG2o%2Bynv-A@mail.gmail.com> References: <CAPyFy2AXee_Y2xei176VAcW6peC0x=waxfPap%2B3uGG2o%2Bynv-A@mail.gmail.com>
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On Fri, Dec 13, 2024 at 10:16=E2=80=AFPM Ed Maste <emaste@freebsd.org> wrot= e: > I have been reviewing parts of the release artifact build process, > including ISO and memstick images, and came across the distribution > sets (e.g., base.txz, src.txz) used by the installer to populate new > file systems. I=E2=80=99d like to discuss switching these to .tzst (tar + > zstd) compression. Why? > While I haven=E2=80=99t yet conducted detailed benchmarks comparing zstd = and > xz specifically for this use case, here are some initial > considerations: Benchmarks would be nice know what is the time-space benefit :-) > Pros of zstd: > - Faster compression and decompression speeds. > - Aligns with the compression method used for FreeBSD packages. > > Cons of zstd: > - Somewhat larger compressed file sizes. > - Requires updates to tools that interact with distribution sets. > - May have limited availability on some other operating systems (?). Seems like more cons than pros at first glance and even more in depth? > Feedback Requested: > Is there support for this idea? Are there objections to pursuing this? > Are there other factors I should consider, especially compatibility conce= rns? Not much clear benefit for a large (compatibility) breaking change on many levels, sounds like a NO GO :D --=20 CeDeROM, SQ7MHZ, http://www.tomek.cedro.info
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