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Please advise exactly what you mean by "withdraw" your passport from CEM. Do you simply mean, how long to get it back after submitting it with your PPR??

If yes, our experience and many others here is that it takes about a month, almost exactly to the day.
 
We applied for my sons student visa back in Manila and now we got our passport request from cic ( I'm the father currently here in Canada with my wife my son is still in the Philippines ) we need to send all passport to Ottawa but my sons passport is in Canada embassy Manila how long to withdraw his passport?
 
Ok, that's what I thought you meant. We'll see if someone here has experience "cancelling" an application AND is still trolling this board.