"Performance Management is an organizationwide system whereby managers integrate the activities of goal setting, monitoring, and evaluating, proving feedback and coaching, and rewarding employees on a continuous basis." (Kreitner & Kinicki)
While many managers probably consider themselves to be "performance managers", it is often less likely the case in reality. It is hard for all of these tasks to be placed on one person, let alone a person who is in a position of athority, but it is even harder for a person to accomplish all of these things well. What it takes to be a good manager differs from person to person, but in my own personal definition/criteria, I would say that a good manager is a person who genuinely cares and is not willing to sacrifice morals for ratings or money. People like this are hard to come by, and usually when you do come across them, they are not in positions of leadership, management, or any kind of power. By reaching a goal and helping people get there, you earn respect and gain wisdom along the way that could only have been obtained through experience. Trying to dictates and belittle employees makes them unwilling, unmotivated, and unhappy. If people feel like they can trust and depend on the person who they report to, they are much more likely to perform well at work, which in turn will make the company better. So, it is exptremely important to build that rapport with your employees so that you are not a "good manager" according to a definition in a book, but rather an actual good manager.