Comment 3 for bug 1597792

I have not used gdb to get a trace but the plasmashell behavior described here matches what I see on my MacBookPro 5,5 with 16.04.01 freshly,newly installed today from dvd made with iso downloaded this morning. Here's what top shows:

<quote>
top - 21:24:29 up 44 min, 2 users, load average: 6.72, 6.83, 6.65
Tasks: 206 total, 2 running, 203 sleeping, 0 stopped, 0 zombie
%Cpu(s): 83.7 us, 16.3 sy, 0.0 ni, 0.0 id, 0.0 wa, 0.0 hi, 0.0 si, 0.0 st
GiB Mem : 3.589 total, 0.563 free, 2.296 used, 0.730 buff/cache
GiB Swap: 3.725 total, 3.668 free, 0.056 used. 1.005 avail Mem

  PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
 2769 jstalnak 20 0 3683820 223080 104680 t 97.7 5.9 27:41.12 plasmashell
</quote>

It can take 45-60 seconds to open an app. Load avg has climbed near 8 but usually hovers around 6.5-7.0. This is with konsole, chromium, and System Settings open, 44 minutes after a reboot.