On Fri, Oct 02, 2015 at 11:50:48PM +0200, Patrick Dupre wrote: > Running only firefox, htop indicates: an occupation of 14.6 of the > memory and of 11.5% for gnome-shell (actually 1.4 G/ 3G of RAM). > This slows down the machine without clear explanation. > Actually, it becomes a lot worst as soon as I run xmgrace for example. > I run fc21 Instead of using htop, could you show your results with smem? Run `smem -k` for human-friendly units. To see specifically gnome-shell or firefox: smem -P gnome-shell$ -k smem -P firefox$ -k Look at the USS and PSS values.... USS is, roughly, memory which wouldn't be used if just that process weren't running. PSS divides shared memory among processes using it. FWIW, on my F23 system right now, up for six days, I get this for gnome-shell: PID User Command Swap USS PSS RSS 1947 mattdm /usr/bin/gnome-shell 0 164.1M 177.4M 219.8M -- Matthew Miller <mattdm@xxxxxxxxxxxxxxxxx> Fedora Project Leader -- users mailing list users@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe or change subscription options: https://admin.fedoraproject.org/mailman/listinfo/users Fedora Code of Conduct: http://fedoraproject.org/code-of-conduct Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines Have a question? Ask away: http://ask.fedoraproject.org