I only recompiled the cygwin dll. I can't remember the source of rsync that
I'm using since I tried many different ones... noting that none made a
difference in regards to speed. I also tried the packages here:
http://www.itefix.no/i2/node/11649

But they had the same slow throughput. To recompile I just used the
installer from http://www.cygwin.com/ for 1.7 and went through the options.

I've been trying to reply to the user mailing list and have registered...
but none of my messages show up.

If needed, I can give you a copy of the dll I'm using.

Thanks,

Jacob

-----Original Message-----
From: Les Mikesell [mailto:lesmikesell AT gmail DOT com] 
Sent: Thursday, August 20, 2009 9:07 AM
To: General list for user discussion,questions and support
Subject: Re: [BackupPC-users] BackupPC File::RsyncP issues

Jacob Hydeman wrote:
> I had the same issue with backups running slowly over rsync from windows
> hosts. The problem started after I upgraded cygwin to 1.7 in order to
> support long file names. On each workstation I'd been getting 80%
> utilization of a 100Mbit network card. After cygwin 1.7 I was only getting
> 8%.
> 
> I compiled a newer version of 1.7 and its back up to 80%. Or you can try
1.5
> to see if that's your issue without going through the trouble of compiling
> your own... but no more long file names of course.

Did you just recompile rsync or the cygwin dll or both?  I found this 
old posting that may explain the underlying problem on windows and why 
it particularly affects cygwin when talking to something with a normal 
delayed-ack tcp stack.  But, I don't know if the patches included ever 
made it into the code base.

http://www.mail-archive.com/cygwin-patches AT cygwin DOT com/msg03644.html


-- 
   Les Mikesell
    lesmikesell AT gmail DOT com


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