Red Hat Bugzilla – Bug 163145
bad dump performance through the loopback device.
Last modified: 2013-04-30 19:33:14 EDT
I am seeing some real performance problems when using dump to dump to the local
The way this can be reproduced. In this example the system name is "it"
on system "it" as root
dump 0f it:/dev/nst0 /disk2
These backup takes almost 28 hours for 4G's of data. During a dump it list the
transfer rate as 38kb. This even happens when I backup to a file instead of
the tape drive.
Seeing that the dump should be using the loopback device for this I expect very
I know the workaround in this example is to use "dump 0f /dev/nst0 /disk2" but
fundamentally something is wrong that should be fixed. This might not be a
dump issue but a networking "lo" issue.
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