FYI, xz with multithreading support (5.2 release) has been marked as stable yesterday.
Regards, Bartłomiej Piotrowski On Mon, Nov 24, 2014 at 12:32 PM, Bartłomiej Piotrowski < bpiotrow...@mirantis.com> wrote: > 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
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