On 9 Jun 2008, at 14:59, Thomas Maier-Komor wrote: >> time gdd if=/dev/zero bs=1048576 count=10240 of=/data/video/x >> >> real 0m13.503s >> user 0m0.016s >> sys 0m8.981s >> >> > > Are you sure gdd doesn't create a sparse file?
One would presumably expect it to be instantaneous if it was creating a sparse file. It's not a compressed filesystem though is it? /dev/ zero tends to be fairly compressible ;-) I think, as someone else pointed out, running zpool iostat at the same time might be the best way to see what's really happening. Jonathan _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
