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Bryan J. Smith wrote:
<blockquote
cite="mid20051205165808.18727.qmail@web34106.mail.mud.yahoo.com"
type="cite">
<pre wrap="">Robert <a class="moz-txt-link-rfc2396E" href="mailto:kerplop@sbcglobal.net"><kerplop@sbcglobal.net></a> wrote:
</pre>
<blockquote type="cite">
<pre wrap=""> 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
</pre>
</blockquote>
<pre wrap=""><!---->
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.
</pre>
</blockquote>
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.)<br>
Have a great day!<br>
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