[Disksim-users] rotational delay

[MAYANK MAHESHWARI]

Hi,

I'm using disksim to try and find the rotational latency writes incur with different disks and scheduling algorithms. I found that there were two functions which were used for this,  device_get_servtime and device_get_seektime. While the latter is self-explanatory that it finds seek delay, I'm not able to understand how does device_get_servtime find the rotational delay? Also there's another function device_get_acctime which I think has not been completely written in the version i have. Would really appreciate if you could tell me how device_get_servtime finds rotational delay or is it a sum of seeks and rotational latency?

Thanks.

Mayank.