I changed to the performance governor last week and wanted to share this surprising (to me) CPU graph:
Both Core 0 and Core 1 showed a similar drop in processor usage. I did nothing but change the CPU governor from ondemand to performance at that time.
Now the thermals:
The temperature increased about 2-3℃.
No complaints or problems to report; just wanted to share this data. I'll be leaving my governor on performance; the Luci web interface feels snappier, could be placebo.