Bryan J. Smith wrote: >Robert <kerplop at sbcglobal.net> wrote: > > >> for dir in bin boot etc home initrd lib lost+found misc >>opt root \ >> sbin selinux srv tftpboot \ >> usr var ; do >> find /$dir -depth -print0 | cpio --null -pmd $UD/$DT >> echo `date` Completed: /$dir >>$PF >> done >> >> > >That's not a good benchmark. You're adding the overhead of >inode/tree traversal and all sorts of other factors. You're >easily cutting performance by 2-3x over. > >Since USB 2.0 EHCI is capable of only 60MBps (480Mbps) >theoretical, and Intel openly admits that only 30MBps is >realistic, 8.8MBps is not unreasonable for this command. > >Try a "raw" dd from /dev/zero, that is at least 2x your >memory: > dd if=/dev/zero of=(some file) bs=8M count=1000 > >Or consider a bonnie benchmark. > > I wasn't complaining, Bryan, simply responding. Actually, having moved from a DAT-2 drive to the USB-connected disk, I'm happy as a pig in sh*t to be able to backup the whole thing unattended and have a reasonable expectation that the resulting wad of crud is good! (I'm still gonna burn /boot, /root, /home and /etc to DVD once a month, though.) Have a great day! -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.centos.org/pipermail/centos/attachments/20051205/9db01183/attachment-0005.html>