Impact of "Idle" Software on Battery Life - Intel

Analysis• Application appears to be setting a timer interval <strong>of</strong> 1.25ms• Application having frequent periodic activity by calling Sleep API• Multiple threads are looping at Sleep() independently with variousinterval. All combined, this process wakes up the processor veryfrequently• Application doing a lot <strong>of</strong> memory copy between CPU & GPU memoryRecommendations:• Do not try to change timer tick from 15.6 ms default when application is atidle.• Use event driven API calls than Polling.• Instead <strong>of</strong> running multiple thread periodically (Sleep() API ) run onethread at the lowest frequency possible, and if necessary, signal to otherthread.• Do not render to the display when it is <strong>of</strong>f• The system display might be <strong>of</strong>f for power savings. Your applicationshould not perform unnecessary graphics rendering when the displayis <strong>of</strong>f because this wastes system resources and power.28