Here is what I want to do..
mkfifo infrequentlog frequentlog sort -m infrequentlog frequentlog > mylog funcA > infrequentlog funcB > frequentlog
So that when monitor tail, I can see the dates are sorted from both logs.
tail -f mylog
The problem is that this thing doesn't print until funcA produce something. What I want is that even funcA doesn't produce something for a while, I still get something about funcB