It does bug the hell out of me that in Windows 10 jMeter 4 seems to be working just nicely, regardless on the display -resolution. That’s just plain wrong. I mean, Linux and MacOs are superior and advanced operating systems, or?
Anyhow, when I run jMeter 4 (or the earlier ones, too) in Linux – haven’t touched that in MacOs in ages, but I assume the situation has not changed a bit – the display and the fonts are so tiny that it makes the back of my head hurt from the tension. It is no good.

Apparently, there’s a bug (or 2) in jMeter:
https://bz.apache.org/bugzilla/show_bug.cgi?id=58426
https://bz.apache.org/bugzilla/show_bug.cgi?id=59168

Luckily there is stackoverflow. I managed to find the cure from there and from jMeter manual:
https://jmeter.apache.org/usermanual/hints_and_tips.html#hidpi

How to do it?

1. Open the apache-jmeter-4.0/bin/user.properties
2. Add the following lines in the end of the file

jmeter.hidpi.mode=true
 jmeter.hidpi.scale.factor=2.0
 jmeter.toolbar.icons.size=48x48
 jmeter.tree.icons.size=32x32
 jsyntaxtextarea.font.family=Hack
 jsyntaxtextarea.font.size=28

Voilá. You’re done. All you need to do now is to start jmeter.