On 24 Nov 2014, at 12:25, Matthew Mosesohn <mmoses...@mirantis.com> wrote: > I did this exercise over many iterations during Docker container > packing and found that as long as the data is under 1gb, it's going to > compress really well with xz. Over 1gb and lrzip looks more attractive > (but only on high memory systems). In reality, we're looking at log > footprints from OpenStack environments on the order of 500mb to 2gb. > > xz is very slow on single-core systems with 1.5gb of memory, but it's > quite a bit faster if you run it on a more powerful system. I've found > level 4 compression to be the best compromise that works well enough > that it's still far better than gzip. If increasing compression time > by 3-5x is too much for you guys, why not just go to bzip? You'll > still improve compression but be able to cut back on time. > > Best Regards, > Matthew Mosesohn
Alpha release of xz supports multithreading via -T (or —threads) parameter. We could also use pbzip2 instead of regular bzip to cut some time on multi-core systems. Regards, Bartłomiej Piotrowski _______________________________________________ OpenStack-dev mailing list OpenStack-dev@lists.openstack.org http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev
