07-12-2013
It's tough to help with so little data.
The problem could be a lot of things. The slow system could just be a slow system. The file system could be almost full, making it slower. It could be on disk(s) that are shared with other very busy file systems.
The more data you provide, the more help you'll get.
What type of Unix? What's the result from running "uname -a"?
What type of file system? How big is the file system? How full is it?
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LEARN ABOUT CENTOS
applydeltarpm
APPLYDELTARPM(8) System Manager's Manual APPLYDELTARPM(8)
NAME
applydeltarpm - reconstruct an rpm from a deltarpm
SYNOPSIS
applydeltarpm [-v] [-p] [-r oldrpm] deltarpm newrpm
applydeltarpm -c|-C deltarpm
applydeltarpm [-c|-C] -s sequence
applydeltarpm -i deltarpm
DESCRIPTION
applydeltarpm applies a binary delta to either an old rpm or to on-disk data to re-create a new rpm. The old rpm can be specified with the
-r option, if no rpm name is provided on-disk data is used. You can use -p to make applydeltarpm print the percentage of completion, or -v
to make it more verbose about its operation.
The second an third form can be used to check if the reconstruction is possible. It may fail if the on-disk data got changed (deltarpms are
created in a way that config file changes do not matter) or the deltarpm does not match the rpm the delta was generated with. The -c option
selects full (i.e. slow) on-disk checking, whereas -C only checks if the filesizes have not changed.
Instead of a full deltarpm a sequence id can be given with the -s sequence option. Such an id contains all the information that is needed
to do reconstruction checking.
Finally information about a deltarpm can be printed with the -i option.
MEMORY CONSIDERATIONS
applydeltarpm was written to work on systems with limited memory. It uses a paging algorithm to keep the size of in-core data low and not
bring the system in an out-of-memory situation.
EXIT STATUS
applydeltarpm returns 0 if the rpm could be recreated or the checking succeeded, it returns 1 and prints an error message to stderr if
something failed.
SEE ALSO
makedeltarpm(8), rpm(8)
AUTHOR
Michael Schroeder <mls@suse.de>
Feb 2005 APPLYDELTARPM(8)