errors when running multiple openssh sessions

jcduell at jcduell at
Tue Jun 17 05:16:45 EST 2003

Openssh seems to fail sporadically if you issue lots of simultaneous
ssh commands, at least under certain conditions.  Take the following


    for NUM in 0 1 2 3 4 5 6 7 8 9; do 
        ssh n2003 echo $NUM "$*" &

So, we're running 10 ssh commands at once.  

When I run this program once, all 

I've observed this bug on OpenSSH_3.6.1p1 on Tru64, OpenSSH 3.2.3p1 on
an IBM SP, and on OpenSSH 3.5p1-6 on Redhat Linux 9. So I suspect it's a
general problem.

Jason Duell             Future Technologies Group
<jcduell at>       Computational Research Division
Tel: +1-510-495-2354    Lawrence Berkeley National Laboratory

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