On Sun, 12 May 2013, Baptiste Daroussin wrote: > > >> Log: > > >> Make newsyslog compress logs with xz instead of bzip2 to save space. > > > While it may be useful for contemporary x64 machines, where CPU power is > > > not an > > > issue, I'm afraid it could produce more harm than goodness on old hardware > > > and/or other architectures like arm. > > > > > > > > +1 > > iirc there was a discussion about it a year or 2 ago, where it was stated that > most of the time the gain of using xz for newsyslog was insignificant, pretty > much no space saved, but the loss in cpu time was significant.
I've just prepared quick test to be feeded to ministat, but preliminary results are: on *real* contemporary server hw.model: Intel(R) Xeon(R) CPU X5650 @ 2.67GHz hw.ncpu: 12 amd64 stable/9 ~1.5G maillog on md (and otherwise unloaded machine, LA <.3) is compressed to: method realtm arsize ==================== gzip 45s 183M bzip2 5m32s 115M xz 11m43s 112M all archivers are used without any special switches, just $arch <$log >$log.$suffix I would tend to use xz for distributives (including freebsd-updates or portsnap), where compression process is quite rare, but download size is significant -- but not for logs, backups, or other similar once-packed data... -- Sincerely, D.Marck [DM5020, MCK-RIPE, DM3-RIPN] [ FreeBSD committer: ma...@freebsd.org ] ------------------------------------------------------------------------ *** Dmitry Morozovsky --- D.Marck --- Wild Woozle --- ma...@rinet.ru *** ------------------------------------------------------------------------ _______________________________________________ svn-src-head@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/svn-src-head To unsubscribe, send any mail to "svn-src-head-unsubscr...@freebsd.org"
