OK so I re-ran rdiff with several different block sizes against my two
image files described earlier to try and find the optimal size with my use
case. Here is a summary:
64 byte block - signature size: 3199208028, delta size: 543335307
256 byte block - signature size: 799802016, delta
OK, I think I found the source of my problem...
One bug I found is due to the very large size of the file I am transferring
(16993256652 image2 -- 17062442700 image1) combined with specifying a
small-ish block size (512). The other bug I am unsure of the cause.
1. Example 1 (works, but
Van Mater matt.vanma...@gmail.com
To: rsync@lists.samba.org
Date: 03/20/2012 12:55 PM
Subject:Batch mode creates huge diffs, bug(s)?
Sent by:rsync-boun...@lists.samba.org
So the short summary of my problem is, the batch file rsync creates is
HUGE for a very small change
Matt Van Mater schrieb:
image1 size in bytes: 17,062,442,700
image2 size in bytes: 16,993,256,652
about 70 MB of change between a boot with a small program install.
That is realistic.
, Riverwoods IL 60015
P: 224.405.2896 ericbamba...@discover.com
From: Matt Van Mater matt.vanma...@gmail.com
To: rsync@lists.samba.org
Date: 03/20/2012 12:55 PM
Subject:Batch mode creates huge diffs, bug(s)?
Sent by:rsync-boun...@lists.samba.org
So the short summary of my
Matt Van Mater schrieb:
Alternate assessment - I ran a similar comparison against the two
image files using rdiff that comes with Ubuntu 10.04.4 LTS (shown up
as librsync 0.9.7) and have a significantly smaller delta file (closer
to what i expect).
Just plain luck. If ubuntu wrote the most
Let me restate my last email regarding rdiff:
All of my image files are from the same Windows XP VM, created using
FOG/partimage. Image1 is the baseline, Image2 is Image1 + the WinSCP
binary downloaded (not even installed).
I am not imaging an Ubuntu machine. I am using the Ubuntu machine as a
Matt Van Mater schrieb:
Let me restate my last email regarding rdiff:
All of my image files are from the same Windows XP VM, created
using FOG/partimage. Image1 is the "baseline", Image2 is Image1 +
the WinSCP binary downloaded (not even installed).
I ran one more test on a separate VM to check and see if rsync would allow
me to specify block size for a smaller file while using batch mode... it
works. To me that indicates that rsync has a problem processing very large
batch files, especially when you specify a particular block size. More
