You have to ask the PNP how long it takes them to nominate you. After you get your nomination, your PR application will go to the visa office responsible for your country. You can see processing times here: http://www.cic.gc.ca/english/information/times/perm/provincial.asp
I applied to SINP under international student category and am wainting for the nomination about 1.5 months. I have a quick question. I am from Japan, and that means the visa office outside of canada after nomination is going to be " Tokyo-Japan" ? and it approximately takes 10 months for processing time to be completed.