On Thu, Jan 28, 2021 at 01:40:08PM +0100, Miroslav Suchý wrote: > Dne 28. 01. 21 v 11:54 Daniel P. Berrangé napsal(a): > >Thus mock ends up using the slower storage since it isn't using /home. > > A performance tips: > http://miroslav.suchy.cz/blog/archives/2015/05/28/increase_mock_performance_-_build_packages_in_memory/index.html
For the RISC-V builders I wrote an nbdkit plugin to be mounted on /var/lib/mock which should achieve similar performance while having the benefit of using filesystem space instead of RAM+swap. https://libguestfs.org/nbdkit-tmpdisk-plugin.1.html Note the performance advantage is not immediately obvious - it's because the plugin intentionally discards flush and FUA requests, thus maximizing the amount that can be cached in RAM, but not requiring RAM+swap as a tmpfs does. (It would be nice for someone to integrate this more closely with mock so that the individual /var/lib/mock/<builddir> directories would be loop mounted as tmpdisk on demand and discarded when mock does a clean operation.) Rich. -- Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones Read my programming and virtualization blog: http://rwmj.wordpress.com virt-p2v converts physical machines to virtual machines. Boot with a live CD or over the network (PXE) and turn machines into KVM guests. http://libguestfs.org/virt-v2v _______________________________________________ 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
