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Culture, cont.
• Linux perf issues are often debugged using only top(1), *stat,
sar(1), strace(1), and tcpdump(8). These leave many areas
not measured.
top layer

Kernel

strace layer

If only
it were
this
simple...

tcpdump layer

• What about the other tools and metrics that are part of Linux?
perf_events, tracepoints/kprobes/uprobes, schedstats, I/O
accounting, blktrace, etc.

Published in: Technology

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