Currently in CS and reaching mx10 salary mid-bar soon (not ceiling ah, nowhere near MX9). Does anyone know the performance grade criteria for crossing the mid-bar? Is it at least two C in a row the last 2 years? Or some other benchmark? Any other criteria besides perf grade?

Need this info to decide whether to jump ship or not. My boss is stingy when it comes to such things.... may prevent me from crossing bar. Then my salary stagnant, I've got growing school kids to support.