The namespace debug gives you access to several non-standard RPC methods, which will allow you to inspect, debug and set certain debugging flags at run time.

​Logging​

• ​debug_backtraceAt​

• ​debug_setVMLogTarget​

• ​debug_verbosity​

• ​debug_vmodule​

​Profiling​

• ​debug_blockProfile​

• ​debug_cpuProfile​

• ​debug_isPProfRunning​

• ​debug_setBlockProfileRate​

• ​debug_startCPUProfile​

• ​debug_stopCPUProfile​

• ​debug_startPProf​

• ​debug_stopPProf​

• ​debug_writeBlockProfile​

• ​debug_writeMemProfile​

​Runtime Tracing​

• ​debug_goTrace​

• ​debug_startGoTrace​

• ​debug_stopGoTrace​

​Runtime Debugging​

• ​debug_freeOSMemory​

• ​debug_gcStats​

• ​debug_memStats​

• ​debug_metrics​

• ​debug_setGCPercent​

• ​debug_stacks​

​VM Tracing​

• ​debug_traceBadBlock​

• ​debug_traceBlock​

• ​debug_traceBlockByHash​

• ​debug_traceBlockByNumber​

• ​debug_traceBlockFromFile​

• ​debug_traceTransaction​

• ​Tracing Options​

• ​JavaScript-based Tracing​

​VM Standard Tracing​

• ​debug_standardTraceBadBlockToFile​

• ​debug_standardTraceBlockToFile​

• ​Standard Tracing Options​

​Blockchain Inspection​

• ​debug_dumpBlock​

• ​debug_getBlockRlp​

• ​debug_getModifiedAccountsByHash​

• ​debug_getModifiedAccountsByNumber​

• ​debug_preimage​

• ​debug_printBlock​

• ​debug_setHead​