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Robert wrote:
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Bryan J. Smith wrote:
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cite="mid20051205165808.18727.qmail@web34106.mail.mud.yahoo.com"
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<pre wrap="">Robert <a class="moz-txt-link-rfc2396E"
href="mailto:kerplop@sbcglobal.net"><kerplop@sbcglobal.net></a> wrote:
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<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
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<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.
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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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<br>
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 :-).<br>
<br>
<pre class="moz-signature" cols="72">--
William A. Mahaffey III
---------------------------------------------------------------------
Remember, ignorance is bliss, but
willful ignorance is LIBERALISM !!!!
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