c5504 dsp - code composer 3.3 with dsp biod 5

folks,

I'm working with c5504 with PLL 100 MHz , which means 1 system clock tick = 10 nano sec.

I measured the operation time of TSK_sleep(1)  procedure and found out that the task sleep for almost 2 mili sec.

can someone explain how it posible that I set the task into sleep mode for 1 system clock tick and the task is in sleep mode for almost 2 milisec?

BR

Talmor