On 9/15/2009 9:48 PM, Matt McCutchen wrote:
On Mon, 2009-09-14 at 21:13 -0400, Lee Winter wrote:
The purpose of this note is to inquire about your collective interest
in optimizing rsync for certain uses, particularly atomic,
unidirectional transfers with few or single writer and many, often
very many, readers.
After studying the requirements and the documentation on samba.org I
have reached the tentative conclusion that serious improvements can be
obtained with a few small tweaks and one medium-sized internal change.
Would you care to elaborate to attract more comments?
I dug into the code a little bit based on [email protected] comment about modifying
wget. His changes are sufficiently encapsulated that I believe we could put
them, or very close relative, into rsync. Unfortunately, my hands gave out
earlier today and I need to give them about a day's rest before I touch anything
vaguely resembling code. the places to hack in rsync are in options.c (~733)
and io.c after approximately line 1014.
Options.C. is mostly setting up of the initial bandwidth limit global. I owe.C.
would need the addition of a new function for the time detection and great
change. That would come from the wget changes reasonably intact.
It's probably a small number of hours for someone whose hands work and whose
knowledge of C isn't 15 years rusty.
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