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> Automated Patch of 10Gb file?
jimadams
Posted: May 16, 2005 04:59 pm
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Daily. I have a 10Gb binary file and would like to create a delta from a reference version. Can your product:

a) handle files of this size.
b) run from an automated Windows 2003 script to compare and produce the patch file
c) any ideas on time per Gb and processor utilization (3Ghz P4)

Thanks,

Jim
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Admin
Posted: May 17, 2005 09:08 am
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First of all thanks for your questions.

Daily. I have a 10Gb binary file and would like to create a delta from a reference version. Can your product:
a) handle files of this size.

PatchFactory can provide comparing of files with size up to 2^63 Bytes (~8589934592 Gb).

cool.gif run from an automated Windows 2003 script to compare and produce the patch file
Unfortunately batch mode is currently not supported.

c) any ideas on time per Gb and processor utilization (3Ghz P4)
The speed and quality of the comparing depends on the similarity of files to be compared.
Please, have a look at the parameters description of the console program dfbuild.exe (see dfbuild.txt or dfbuild.exe /?) and tuning recommendations prior to perform the comparing of such big files.

Additional recommendations:
1. Try to perform comparing directly using console program dfbuild.exe in order to choose optimal comparing parameters.
2. Perform comparing with options "-1 -mem=10" set.
If the obtained results do not satisfy your requirements - try executing without additional parameters (i.e. with parameters set by default).
3. Add these files to version images as links.

dfbuild program has a set of parameters which provides the control under speed and quality of processing of the comparing algorithm.
Here are brief recommendations for setting these parameters which can be helpful in your case...

Tuning recommendations for 'dfbuild' program.
**************************************************
If you are processing large files (~500Mb and more) first try to
use 'dfbuild' with parameters providing the maximum speed:

dfbuild -1 -mem=1 <old_file> <new_file>

If the result is not acceptable (df-file size is too big) try to
increase the amount of system memory utilized using '-mem'
parameter. And only after exhausting its potentialities try to
change the 'comparing method' parameter.
**************************************************
However the size of the result patch-file and the speed of its building depends not only of the parameters of the comparing algorithm but also on the nature and the similarity ratio of files to be compared.

Thanks a lot for interest in our product and giving us your feedback.


--------------------
Best regards, AgenSoft.Com Support Team
AgenSoft.Com - Complete Software Update Solutions
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ffworld
Posted: February 04, 2015 07:09 pm
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Please, have a look at the parameters description of the console program dfbuild.exe (see dfbuild.txt or dfbuild.exe /?) and tuning recommendations prior to perform the comparing of such big files.








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Posted: March 04, 2015 08:14 pm
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Posted: March 10, 2015 02:25 am
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Posted: March 24, 2015 12:22 am
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Posted: March 24, 2015 01:04 am
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Posted: June 08, 2015 09:57 pm
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Posted: June 09, 2015 04:28 am
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