Create a trace log using `export KDE_FORK_SLAVES=true; krusader -d` and then entering into compressed files. Add `KRDEBUG` lines, add `KRFUNC` lines code to the code of Krusader, and to the code of the iso and krarc kioslaves, compile and execute Krusader, and watch what is written to the trace log.
Create trace logs but using `KRDEBUG_BRIEF=true` previously, compare those trace logs, etc.