Linux System Performance/Observability Tools   BPF (bpfcc-tools), BCC Tools, and Complete Observability Toolkit    Assuming you have Linux Server in place and have the required BPF aka BCC related packages installed on the system(s) for Linux distribution.       BPF(eBPF) aka BCC Tools (bpfcc-tools):    BPF , which originally stood for Berkley Packet Filter is the dynamic tracing tools for Linux Systems.  BPF initially used  for the speeding up for the tcpdump expressions and since then it has been know as the extended Berkley packet Filter (eBPF).  Its new uses are Tracing Tools  where it provides programmability for the BPF Compiler Collection (BCC) and bpftrace front ends.  Example:  execsnoop, biosnoop etc is a BCC Tool.  When facing production performance crisis  these such list of tools comes handy to trace and fix the issue. However, it requires certain KERNEL level config options to be enabled such as CONFIG_FTRACE, CONFIG_BPF.  Profiling tools  typically required complie...