Is is correct to judge a developer's performance this way?
lrm242: Quantitative metrics typically fail. For example, the number of bugs would be expected to increase as the developer writes more code, so while one developer might have more bugs assigned to him, that doesn't mean he writes worse code than another developer.The best answer is: you judge the performance of a developer the same way you would judge the performance of any employee. You gather feedback and apply your own personal assessment of that individual's performance given the tasks and objectives you've assigned. There is no magic bullet.