I'm running debian 10, with env_parallel.  Yes my bash environment is customized.

GNU parallel 20161222

I'm trying to run a command on every file in a large directory.

for a in {1..300};do touch $a'kind of a long filename this is a a long filename this is a long filename wa long filename this is a long filename wlong filename with lots of characters and maybe a pathname'; done

This should generate a argument length of about 50K, but `getconf ARG_MAX` is about 2M

What breaks is :
find -type f|env_parallel  --tty -m -j1 /bin/ls -l

using the option '-N 4' seems to fix the problem, and also using a shorter filenames in the test directory also seems to fix the problem.

the error i get is: 'parallel: Error: No more processes: cannot run a single job. Something is wrong at < one long line at this point> '

Thanks for your help!