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iosnoop For Linux
"How does this work? It's just a shell script!" Linux's ftrace facility turns out to be surprisingly capable... and there are a whole load of neat scripts that use it in perf-tools.
to debugging ftrace linux perf performance tracing ...
on 14 October 2016
Ftrace: The hidden light switch [LWN.net]
Using Linux's function tracer to investigate a kernel performance problem. I was looking at this again recently because I'd like to know when exactly bash is getting called...
to ftrace kernel linux performance tracing ...
on 03 October 2014
by Adam Sampson.