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From: Luis Gonzalez <luis.gonzalez@gmail.com>
Date: Fri, 11 Dec 2020 11:59:39 +0100
Message-ID: <CAH4=dZCvGYRoRzewk3Sxjgo-_42+mZphUL30xtvMQmUh2acSzQ@mail.gmail.com>
Subject: Rsync + SSH slow speed
To: cygwin@cygwin.com
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Hi to everybody,
i have several windows server in different location with the  latest
version of cygwin with open ssh and rsync installed openssh 8.4p1-2
rsync  3.2.4dev
i'm trying to rsync from centos with rsync 3.2.3
The problem is that if i use rsync
/usr/bin/rsync -rlptDvh  --partial --del --progress -s --ignore-errors
  -og --timeout=500 --include-from=/scripts/clients/pattern.txt
--rsh='ssh -p 2230  -o CheckHostIP=no  -o Compression=no '
Administrator@host:/cygdrive/ /dst/client/

speed is only above 2.0MBps. CPu is over 5%, hard disk is about 1% and
network speed is about 2%
if i made the same rsync over linux machine on the same location speed
is up to 60MBps(network speed on both sides is 600Mbps)

i've tried to install rsync as a service on windows machine and use
ssh as a tcp fordwarding and then the rsync speed is over 20MBps :-O

Do you know what is the config problem for this slow speed with rsync
directly over ssh?
best regards