It's important to know what parameters they use to determine who or what needs improvement. There have been times when a manager told me there was a problem and it turned out he had inaccurate information. The manager was looking at the wrong version, branch or had 3rd hand information. Managers have claimed to be unaware of what I was working on even with daily standups, task tracking and working a few desks away. Some managers are terrible.
In my work it's nearly impossible to meet requirements or deadlines, because requirements documents are non existing, and deadlines are pulled out of thin air by non technical management. Fortunately they haven't complained about our performance.
