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perf - -- &#; perf： perf stat，perf record。 ，
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LinuxPerf - - SegmentFault -- &#; PerfLinux . +，LinuxCPU ,。. PerfLinux perf_events 。. Perf。. Ubuntu .（..--generic）
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perf - ArnoldLu-- &#; perf. ：Ubuntu. + Kernel：..-. ：（performance profiling）。.
Linux perf--- &#; perfLinux .+， tools/perf。. perfLinuxtrace，，event (perf stat)； (perf record)， (perf report|script|annotate)。. perfLinux trace
perf - -- &#; perf. perf top cpu. perf list perf. perf stat profiling. perf record profiling， xx.data. perf report xx.data. ，
perf Examples_samssm-CSDN-- &#; A perf record command was used to trace the block:block_rq_issue probe, which fires when a block device I/O request is issued (disk I/O). Options included -a to trace all CPUs, and -g to capture
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LinuxPerf - - SegmentFault -- &#; PerfLinux . +，LinuxCPU ,。. PerfLinux perf_events 。. Perf。. Ubuntu .（..--generic）
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C++：perf + Flame Graph-- &#; Linux: perf, eBPF, SystemTap, and ktap Solaris, illumos, FreeBSD: DTrace Mac OS X: DTrace and Instruments Windows: Xperf.exe perf(perf perf examplesLinux。 perf
perf script _Linux—perf_weixin -- &#; ： perf script b. ： (performance profiling)。. ，。.
Tutorial - Perf Wiki - Linux kernel-- &#; Introduction. Perf is a profiler tool for Linux .+ based systems that abstracts away CPU hardware differences in Linux performance measurements and presents a simple commandline interface. Perf is based on the perf_events interface exported by recent versions of the Linux kernel. This article demonstrates the perf tool through example runs.
Linux perf top - digdeep - -- &#; ）perf top -e cpu-clock: CPU. ）perf top -e faults : page faults. ）perf top -e block:block_rq_issue : IO，IO，，
perf Examples_samssm-CSDN-- &#; A perf record command was used to trace the block:block_rq_issue probe, which fires when a block device I/O request is issued (disk I/O). Options included -a to trace all CPUs, and -g to capture