Also happening here using latest nvidia drivers (331.113), CPU usage of compiz climbs when using the TV out on my GeForce GTS 250. I've been using this setup for years and this high CPU usage making the whole Unity almost unusable is very recent, a few weeks at most.
Running sudo perf top -p $COMPIZ_PID:
Single monitor: (compiz cpu% in top is around 2-3%)
Also happening here using latest nvidia drivers (331.113), CPU usage of compiz climbs when using the TV out on my GeForce GTS 250. I've been using this setup for years and this high CPU usage making the whole Unity almost unusable is very recent, a few weeks at most.
Running sudo perf top -p $COMPIZ_PID:
Single monitor: (compiz cpu% in top is around 2-3%)
21.40% [kernel] [k] _nv013274rm pci_config_ space ssse3_back core-4. 0.so.0. 7.0 [.] _ZN3nux18NThrea dSafeCounter9In creen17paintOut
4.07% [kernel] [k] rm_check_
1.26% libc-2.19.so [.] _int_malloc
0.85% libc-2.19.so [.] _int_free
0.68% libc-2.19.so [.] malloc
0.65% libc-2.19.so [.] __memmove_
0.55% libnux-
0.52% libopengl.so [.] _ZN15PrivateGLS
Second monitor turned on in display settings (compiz jumps to 18%):
13.20% [kernel] [k] _nv013274rm pci_config_ space ssse3_back creen17paintOut core-4. 0.so.0. 7.0 [.] _ZN3nux18NThrea dSafeCounter9De
3.80% [kernel] [k] rm_check_
1.44% libc-2.19.so [.] _int_malloc
1.34% libc-2.19.so [.] _int_free
0.91% libc-2.19.so [.] malloc
0.82% libc-2.19.so [.] __memmove_
0.59% [kernel] [k] _nv008722rm
0.56% libopengl.so [.] _ZN15PrivateGLS
0.55% libc-2.19.so [.] __GI___strcmp_ssse3
0.53% libnux-
Cheers,