https://engineering.redhat.com/docbot/en-US/Red_Hat_Enterprise_MRG/1.0/html/Real_Time_Deployment_Guide/sect-Real_Time_Deployment_Guide-Download-RT_Kernel_Variants.html The page above has a box with kernel capabilities, stating that kernel-rt-debug has latency_tracer enabled. This is an error propagated by our rt wiki old docs. Latency_trace is only enabled in the kernel-rt-trace variant.