On Fri, 7 Mar 2008, Rob Logan wrote: > > zfs send -i z/[EMAIL PROTECTED] z/[EMAIL PROTECTED] | bzip2 -c |\ > ssh host.com "bzcat | zfs recv -v -F -d z" > zfs send -i z/[EMAIL PROTECTED] z/[EMAIL PROTECTED] | bzip2 -c |\ > ssh host.com "bzcat | zfs recv -v -F -d z" > zfs send -i z/[EMAIL PROTECTED] z/[EMAIL PROTECTED] | bzip2 -c |\ > ssh host.com "bzcat | zfs recv -v -F -d z"
Since I see 'bzip2' mentioned here (a rather slow compressor), I should mention that based on a recommendation from a friend, I gave a compressor called 'lzop' (http://www.lzop.org/) a try due to its reputation for compression speed. Compressing zfs send was causing it to take much longer. Testing with 'lzop' showed that it was 2.5X faster than gzip on the Opteron CPU and that the compression was just a bit worse than gzip's default compression level. It seems that some assembly language is used for x86 and Opteron. I did not test the relative speed differences on SPARC. The benefit from a compressor depends on the speed of the pipe and the speed of the filesystem. If CPU and/or network is the bottleneck, then LZO compression may be the solution. Bob ====================================== Bob Friesenhahn [EMAIL PROTECTED], http://www.simplesystems.org/users/bfriesen/ GraphicsMagick Maintainer, http://www.GraphicsMagick.org/ _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
