On Wed, 14 May 2025, matthew green wrote:
netbsd-8 uses pax-as-tar. netbsd-9 and newer has bsdtar-as-tar.
Ah, never used 8.x, so I didn't know that...
is this the real difference? how dos "pax -r" work where tar is fast?
Works about the same in -HEAD (using the pkgsrc tarball which expands to ~1.4 GB and which contains _many_ small files): ``` qemu$ uname -a NetBSD qemu.local 10.99.14 NetBSD 10.99.14 (GENERIC) #0: Sat May 10 18:58:53 UTC 2025 mkre...@mkrepro.netbsd.org:/usr/src/sys/arch/amd64/compile/GENERIC amd64 qemu$ cd /tmp qemu$ (pax -h; tar -h; xzcat ~/pkgsrc-HEAD.tar.xz) >/dev/null 2>&1 qemu$ time -p xzcat ~/pkgsrc-HEAD.tar.xz | tar -xf -; rm -rf pkgsrc real 23.43 user 5.87 sys 0.60 qemu$ time -p xzcat ~/pkgsrc-HEAD.tar.xz | pax -r 2>/dev/null; rm -rf pkgsrc real 28.09 user 5.84 sys 0.40 qemu$ ``` /tmp is a 2GB tmpfs (to remove any HW involvement). -RVP
