On Wed, May 13, 2020 at 5:32 AM Bohdan Khomutskyi <bkhom...@redhat.com> wrote: > > Hello, > > It was a long time since the last message in this change proposal. > > Recently I was working to reduce the impact of the increased compression > ratio on the installation image size for Fedora. I have achieved outstanding > results -- working proof of concept. With the following change: > https://github.com/rhinstaller/anaconda/pull/2292 , not only the higher > compression does not impact the installation time. In certain cases, the > installation time is even reduced. This is because of the fact the filesystem > internal structure aware process is used to install the system from the > SquashFS. The new process also allows for taking advantage of the multi-core > architecture of the system during installation -- does the decompression on > multiple processors in parallel. > > The combination of https://github.com/rhinstaller/anaconda/pull/2292 and > https://fedoraproject.org/wiki/Category:Changes/OptimizeSquashFS should > reduce _both_ the image size and the installation time. The installation time > will be reduced in case the system is installed from the SquashFS. This is > the case in Fedora Workstation. > > For optimization of the SquashFS, I will work on requesting the support of > the required functionality in the Pungi compose build software.
Hi, since the feedback was that a higher emphasis be placed on install time being reduced, even if there was some increase in ISO size (not without limit, it's a balancing act), I'm still curious how the change compares when using zstd, all other things being equal. For example Solus recently changed from xz to zstd in squashfs, and claim 3-4x faster install times, with some increase in image size. https://getsol.us/2020/01/25/solus-4-1-released/ -- Chris Murphy _______________________________________________ devel mailing list -- devel@lists.fedoraproject.org To unsubscribe send an email to devel-le...@lists.fedoraproject.org Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/devel@lists.fedoraproject.org
