my usual X session longs 1-2 monthes, with recent X.org version, it doesn't crash, so i have gnome-terminal running for about 1 month for example. And usually i have about 10-20 tabs opened.

Just checked its memory usage with "ps axwu | grep gnome-terminal" :

mator     9745  0.0 15.0 988864 303036 ?       Rl   Sep11  12:11 gnome-terminal

then i have checked my current gnome-terminal profile -> Scrolling, it was 5Mb of memory for each scrollback buffer, so i decided to reduce scrollback buffer and made it 1Mb, my system was busy for about 10 seconds. Then checked memory usage again:

mator     9745  0.0 20.4 1000256 412580 ?      Rl   Sep11  12:12 gnome-terminal

that was surprise! how come, if i reduce scrollback buffer, i have increasing memory usage. Next try, reducing scrollback to 100k :

mator     9745  0.0 23.2 1000256 468176 ?      Sl   Sep11  12:12 gnome-terminal

That is what i have to report. Can someone comment please? Thanks.