What's the ideal length of a standup?

[zoltanersek _outpostlabs_dev_]

I was part of many teams over the length of my career, and I keep finding 2 extremes when it comes to standups: they either last under 10 minutes or they go on for almost an hours. It's no surprise to anyone, that I prefer the first. 

Now, what do you think an ideal standup should take? 
What is your advice for optimizing long standups? Especially, what I can do as a relatively new member of the team. 

We don't have a scrum master or someone 100% focused on agile practices.