Cache misses are one of the most well-known performance-losing events.
To provide some background, cache misses are one of the main causes of computer system slowdowns, obstructing computers from consuming cycles in useful computation work. What I mean by performance-losing is that cache misses are the kinds of events that slow down the computer, but I think the losing one is computers, not events. I considered terms like performance-stealing or performance-weakening, but I have no idea whether these terms are commonly used or seem natural. Could anyone recommend the term to describe this?