Debugging

Core Dump

• Capture of memory of the process and storing in a file for later analysis
• Memory was called core in earlier days

Crash

• Failure in the kernel
• When crash happens
  • error info is saved in a log file
  • memory state is saved in a crash dump

Tracing and Profiling

Purpose	Linux	macOS	Windows
System calls	strace	dtruss	Process Monitor
Dynamic Tracing	eBPF	DTrace	Event Tracing for Windows (ETW)
Performance Tracing	perf	Instruments	Performance Profiler

Monitoring

Purpose	Linux	macOS	Windows
Process monitoring	top, htop	Activity Monitor	Task Manager
CPU / Memory	vmstat	Activity Monitor	Task Manager / Resource Monitor
Disk I/O	iostat	Activity Monitor	Resource Monitor
Network	ss, ip	Activity Monitor	Resource Monitor