EC2 インスタンス上で perf コマンドを使ってみた

yum -y install perf

perf stat -e cpu-clock test.sh

perf stat test.sh

a
^Ctest.sh: Interrupt

 Performance counter stats for 'test.sh':

       1854.979048 task-clock                #    0.925 CPUs utilized
             2,014 context-switches          #    0.001 M/sec
                 0 cpu-migrations            #    0.000 K/sec
               342 page-faults               #    0.184 K/sec
    cycles
    stalled-cycles-frontend
    stalled-cycles-backend
    instructions
    branches
    branch-misses

       2.006052484 seconds time elapsed

perf record test.sh

perf report

PERF(1)                           perf Manual                          PERF(1)

NAME
       perf - Performance analysis tools for Linux

SYNOPSIS
       perf [--version] [--help] COMMAND [ARGS]

DESCRIPTION
       Performance counters for Linux are a new kernel-based subsystem that provide a framework for all things performance analysis. It covers hardware level
       (CPU/PMU, Performance Monitoring Unit) features and software features (software counters, tracepoints) as well.

SEE ALSO
       perf-stat(1), perf-top(1), perf-record(1), perf-report(1), perf-list(1)

perf                              05/08/2014                           PERF(1)

 usage: perf [--version] [--help] COMMAND [ARGS]

 The most commonly used perf commands are:
   annotate        Read perf.data (created by perf record) and display annotated code
   archive         Create archive with object files with build-ids found in perf.data file
   bench           General framework for benchmark suites
   buildid-cache   Manage build-id cache.
   buildid-list    List the buildids in a perf.data file
   diff            Read two perf.data files and display the differential profile
   evlist          List the event names in a perf.data file
   inject          Filter to augment the events stream with additional information
   kmem            Tool to trace/measure kernel memory(slab) properties
   kvm             Tool to trace/measure kvm guest os
   list            List all symbolic event types
   lock            Analyze lock events
   record          Run a command and record its profile into perf.data
   report          Read perf.data (created by perf record) and display the profile
   sched           Tool to trace/measure scheduler properties (latencies)
   script          Read perf.data (created by perf record) and display trace output
   stat            Run a command and gather performance counter statistics
   test            Runs sanity tests.
   timechart       Tool to visualize total system behavior during a workload
   top             System profiling tool.
   trace           strace inspired tool
   probe           Define new dynamic tracepoints

 See 'perf help COMMAND' for more information on a specific command.