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brendangregg / perf-tools

Performance analysis tools based on Linux perf_events (aka perf) and ftrace
GNU General Public License v2.0
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rightly open tracing_{on,enabled} switches #79

Open yinghaoxie opened 5 years ago

yinghaoxie commented 5 years ago

on centos6 & 7 iolatency is broken case of not open tracing_{on,enabled} switches rightly

brendangregg commented 4 years ago

Thanks, this is similar to #80 and #29; any idea why it is necessary? Who is setting tracing_on to 0? I'd like to understand why it is (and what this might break) before changing it.