random "Can't allocate memory" from sshd

[Larry Rosenman]

I've had this issue for a while on 10 and 11....

merrily working along, in an SSH session, or doing zfs send/recv over ssh
and randomly I'll get a "can't allocate memory" from sshd and the session 
gets killed. 

There is PLENTY of memory on the free list (>500meg). 

What can I do to catch what is having an issue, and better yet, fix it?

What diagnostics do I need?


-- 
Larry Rosenman                     http://www.lerctr.org/~ler
Phone: +1 214-642-9640                 E-Mail: ler at lerctr.org
US Mail: 108 Turvey Cove, Hutto, TX 78634-5688