On Fri, Jan 15, 2016 at 11:35 PM, Howard Chu <hyc@xxxxxxxxx> wrote: > Thomas ☃ Habets wrote: >> On 15 January 2016 at 17:26, Roland Mainz <roland.mainz@xxxxxxxxxxx> >> wrote: >>>>> >>>>> Don't these extra roundtrips further increase the latency of ssh >>>>> connection setup (e.g. imagine a high-bandwidth&&high-latency satelite >>>>> link) ? ssh is already a *PAIN* in that area, killing it's usefullness >>>>> for applications like "Distributed make" because the time to setup the >>>>> connection can be much longer than the command executed on the remote >>>>> side. >>>> >>>> They would, but only when this non-default option was enabled. >>> >>> OK... are there any good ideas how to mitigate the latency effect ([1]) ? >> >> You could try mosh (https://mosh.mit.edu/). > > LINEMODE works too. https://github.com/hyc/OpenSSH-LINEMODE Isn't that an improvement only for interactive mode ? My point was that something like $ ssh "$LOGNAME@desthost" '/bin/true' # is horrible slow compared to (Kerberised) rsh, and gets even worse on high-latency links (problem is that the large number of roundtrips by the ssh protocol makes the whole thing latency-sensitive to a high degree). ---- Bye, Roland -- __ . . __ (o.\ \/ /.o) roland.mainz@xxxxxxxxxxx \__\/\/__/ MPEG specialist, C&&JAVA&&Sun&&Unix programmer /O /==\ O\ TEL +49 641 3992797 (;O/ \/ \O;) _______________________________________________ openssh-unix-dev mailing list openssh-unix-dev@xxxxxxxxxxx https://lists.mindrot.org/mailman/listinfo/openssh-unix-dev
