How to verify, when Jolla is running in low memory condition?

The real benchmark is when the system starts using the swap memory extensively, open your terminal and run free, e.g.

[nemo@jolla ~]$ free
             total       used       free     shared    buffers     cached
Mem:        827612     632892     194720          0       6244     275792
-/+ buffers/cache:     350856     476756
Swap:       520180       4664     515516

I run Lighthouse from the store. When it indicates above 85% memory usage, my phone stops responding or becomes very sluggish. So I guess thats where I hit the spot.

@pmelas

[nemo@Jolla ~]$ free
          total    used    free    shared  buffers  cached
Mem:      830728   729988  100740  0       100      193248
-/+ buffers/cache: 536640  294088
Swap:     520180   200552  319628

@Kari, the last line shows use of the swap area, ~40% use which is a lot, swap memory is slow. Check the applications you are running, use the command top (turn phone landscape so can see full width of the output).