[Bug 2038449] Re: Use pixz for compressing images

[Launchpad Bug Tracker]

[Expired for livecd-rootfs (Ubuntu) because there has been no activity
for 60 days.]

** Changed in: livecd-rootfs (Ubuntu)
       Status: Incomplete => Expired

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https://bugs.launchpad.net/bugs/2038449

Title:
  Use pixz for compressing images

Status in livecd-rootfs package in Ubuntu:
  Expired

Bug description:
  We currently use xz for compression.

  live-build/ubuntu-cpc/hooks.d/base/disk1-img-xz.binary:14:    xz -T4 -c binary/boot/disk-uefi.ext4 > livecd.ubuntu-cpc.disk1.img.xz
  live-build/ubuntu-cpc/hooks.d/base/disk1-img-xz.binary:16:    xz -T4 -c binary/boot/disk.ext4 > livecd.ubuntu-cpc.disk1.img.xz

  At least on riscv64 this is a major driver for the build time. We
  should pixz to parallelize the compression.

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