QWidget update get so cpu usage

[ChrisW67]

5000 milliseconds to do 360 steps is over 70 updates per second. Even so, I don't a see a ridiculous CPU load; about 10% of one core between my application and X with default renderer. Increasing the steps to 3 degrees and doing 120 per revolution (24fps movie rate) drops that to < 5.

[danics]

5000 milliseconds to do 360 steps is over 70 updates per second. Even so, I don't a see a ridiculous CPU load; about 10% of one core between my application and X with default renderer. Increasing the steps to 3 degrees and doing 120 per revolution (24fps movie rate) drops that to < 5.

ok i get your point, you want me to fixed timer interval to 50 ms and change my steps for increasing my speed, i did this before but what about smooth animating? it seems like a jump not continusely rounding,
any way my cpu load is 20% in this manner, are you sure you change your radius?