20ms is a long time in low-level systems programming, especially where concurrency might be low or limited. You only need to find five 20ms savings opportunitie

20ms is a long time in low-level systems programming, especially where concurrency might be low or limited. You only need to find five 20ms savings opportunities to shave a tenth of a second off of your boot time. Edited to add: A lot of performance loss for large, complex systems is death-by-a-thousand-cuts -- 20ms here and there can make a real, user-perceivable difference.