I frequently utilise perf-6.17.4-200.fc42.x86_64’s perf record --debuginfod --call-graph dwarf. At the start of its invocation, I see “Failed to read max cpus, using default of 4096”. What does that entail in practice, and does this matter? I ask in order to report it, because I see so few reports of it online. [1]
My Environment
kinfo returns:
Kernel Version: 6.17.4-200.fc42.x86_64 (64-bit) Processors: 12 × AMD Ryzen 5 7600X 6-Core Processor