AIX

I'm investigating an issue where rsync's to an AIX server will sometimes fail. I suspect the problem might be due to the number of simultaneous SSH connections being made to the host dropping the rsync attempts. I'd like to view the number of open ssh connections. The who command will list logged in users, but I need something more. Ideally, I'd like to get a snapshot at specific times of the day.

SSH is specified in the rsync command rather than using rsh. I thought perhaps the sshd_config or sshd2_config in /etc/ssh2 might control the maximum number of connections to the host. And there is a MaxConnection stanza but sshd2_config has it commented out.

A perl script attempts to ssh several files and often 9 out of 10 get transferred. The problem, I believe, occurs when our large number of hosts attempt to get files from the parent host at the same time. The limit on the number of ssh connections hits a peak and causes an rsync to drop. But I don't know for sure.

Try netstat -atn | grep ':22'