What type of document reports flaws in software that can affect its performance?

A defect report serves as a formal document that outlines issues, known as defects or bugs, which have been identified in the software. The primary function of a defect report is to provide detailed information about the flaws that can negatively impact the software's performance.

The report typically includes essential details such as a description of the problem, steps to reproduce the defect, its severity, and the impact on the system, which allows developers and testers to understand the issues clearly and prioritize them for resolution. By documenting these flaws, the defect report plays a crucial role in the software development lifecycle, ensuring that the identified issues are addressed to improve the overall quality and performance of the software.

Other types of documents, like the test case document, focus on outlining specific test scenarios and conditions required to test the software rather than reporting flaws, while the requirements specification outlines what the software should do. The issue log tracks both defects and other issues that may arise but does not specifically focus solely on performance-affecting flaws like a defect report does.