RENEWAL OF FREQUENT vISITOR VISA AND VISA PROCESSING TIME

[jdpjr]

Good day. My passport was already submitted to the Canadian Embassy in Manila for the renewal of my single entry visitor's visa. My questions are:
1)   What is the reference used in queuing the visa application?
a)   Date of filing; or
b)   Date of entry to Canada.
If the date of entry is the basis of queuing, I am informing you that my visit to Canada is the last leg of my trip to North American. I am flying out of Manila on 2 September for visits to San Francisco, California; Little Rock, Arkansas; Washington DC; Portland, Oregon; and, last, Vancouver, B.C. before returning to Manila via Portland, Oregon. (There is not flying from Washington DC to Vancouver on my scheduled flying date.)
2)   Are there different queues for different types of visa applied for?  For example: first visit to Canada as against visa renewal of frequent visitors to Canada.
3)   What is processing time from the date of filing to the release of the visa?
Thank you.