Bart wrote: > The more interesting question is > MB/sec from the dvd drive during the install.
And note that in a lot of cases the MB/sec from the optical drive during the install is quite low, because hsfs issues 2k read requests to the drive, even when reading a multi-megabyte compressed package archive file. AFAIK, file data on the iso9660 installation media doesn't use sector interleaving, so hsfs could do a much better job here and read ahead data in bigger clusters. Test case: watch "iostat -xnzc 5" while reading from an optical media, using different block sizes: dd if=/dev/rdsk/c2t1d0p0 of=/dev/null bs=2k dd if=/dev/rdsk/c2t1d0p0 of=/dev/null bs=32k This SONY DVD RW AW-G170A (and a DVD-RW media) is reading ~3 MB/sec using 2k read requests, and ~8 MB/sec when using 32k reads. This message posted from opensolaris.org
