Robert wrote: > 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! > >------------------------------------------------------------------------ > >_______________________________________________ >CentOS mailing list >CentOS at centos.org >http://lists.centos.org/mailman/listinfo/centos > > 19 GiB in 36 minutes, I wouldn't be complaining either :-). I'm using DDS-2 & 3, & they are MUCHO slower .... I do also backup across my network to a sorta-spare HDD on another box, but use the DAT tapes for remote storage. I might need to look into a firewire/USB disk for that at those speeds :-). -- William A. Mahaffey III --------------------------------------------------------------------- Remember, ignorance is bliss, but willful ignorance is LIBERALISM !!!! -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.centos.org/pipermail/centos/attachments/20051205/5ac2375d/attachment-0005.html>