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metadata:
name: andriod-perf
format: "Manual Test Definition 1.0"
description: "Test if perf utility works"
maintainer:
- botao.sun@linaro.org
os:
- android
scope:
- functional
devices:
- panda
- panda-es
- vexpress-a9
- vexpress-tc2
- arndale
environment:
- manual-test
run:
steps:
- "Power on the board to boot into Android main screen"
- "In serial console, run:
# perf stat ls"
expected:
- "The output of command \"perf stat ls\" should look like this:
Performance counter stats for 'ls':
0.659622 task-clock # 0.665 CPUs utilized
24 context-switches # 0.036 M/sec
0 CPU-migrations # 0.000 K/sec
273 page-faults # 0.414 M/sec
1'996'348 cycles # 3.027 GHz [78.98%]
1'274'167 stalled-cycles-frontend # 63.82% frontend cycles idle
1'005'419 stalled-cycles-backend # 50.36% backend cycles idle
1'397'625 instructions # 0.70 insns per cycle
# 0.91 stalled cycles per insn
277'755 branches # 421.082 M/sec
7'689 branch-misses # 2.77% of all branches [28.76%]
0.000992095 seconds time elapsed"
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