On ARM Versatile Express A9 board with Linaro Android image:
https://android-build.linaro.org/builds/~linaro-android/vexpress-linaro-13.06-release/#build=1
"perf" test now backs to work:
root@android:/ # perf stat ls acct cache config d data default.prop dev etc fstab.arm-versatileexpress fstab.arm-versatileexpress-usb fstab.v2p-aarch64 init init.arm-versatileexpress-usb.rc init.arm-versatileexpress.rc init.goldfish.rc init.partitions.arm-versatileexpress-usb.rc init.partitions.arm-versatileexpress.rc init.rc init.trace.rc init.usb.rc init.v2p-aarch64.rc mnt proc root sbin sdcard storage sys system ueventd.arm-versatileexpress-usb.rc ueventd.arm-versatileexpress.rc ueventd.goldfish.rc ueventd.rc ueventd.v2p-aarch64.rc vendor
Performance counter stats for 'ls':
13.578958 task-clock # 0.861 CPUs utilized 0 context-switches # 0.000 M/sec 1 CPU-migrations # 0.000 M/sec 144 page-faults # 0.011 M/sec 5385358 cycles # 0.397 GHz 1333289 stalled-cycles-frontend # 24.76% frontend cycles idle 0 stalled-cycles-backend # 0.00% backend cycles idle 1655805 instructions # 0.31 insns per cycle # 0.81 stalled cycles per insn 139587 branches # 10.280 M/sec 61065 branch-misses # 43.75% of all branches
0.015772000 seconds time elapsed
root@android:/ #
On ARM Versatile Express A9 board with Linaro Android image:
https:/ /android- build.linaro. org/builds/ ~linaro- android/ vexpress- linaro- 13.06-release/ #build= 1
"perf" test now backs to work:
root@android:/ # perf stat ls versatileexpres s versatileexpres s-usb versatileexpres s-usb.rc versatileexpres s.rc .arm-versatilee xpress- usb.rc .arm-versatilee xpress. rc arm-versatileex press-usb. rc arm-versatileex press.rc v2p-aarch64. rc
acct
cache
config
d
data
default.prop
dev
etc
fstab.arm-
fstab.arm-
fstab.v2p-aarch64
init
init.arm-
init.arm-
init.goldfish.rc
init.partitions
init.partitions
init.rc
init.trace.rc
init.usb.rc
init.v2p-aarch64.rc
mnt
proc
root
sbin
sdcard
storage
sys
system
ueventd.
ueventd.
ueventd.goldfish.rc
ueventd.rc
ueventd.
vendor
Performance counter stats for 'ls':
13.578958 task-clock # 0.861 CPUs utilized cycles- frontend # 24.76% frontend cycles idle cycles- backend # 0.00% backend cycles idle
# 0.81 stalled cycles per insn
0 context-switches # 0.000 M/sec
1 CPU-migrations # 0.000 M/sec
144 page-faults # 0.011 M/sec
5385358 cycles # 0.397 GHz
1333289 stalled-
0 stalled-
1655805 instructions # 0.31 insns per cycle
139587 branches # 10.280 M/sec
61065 branch-misses # 43.75% of all branches
0.015772000 seconds time elapsed
root@android:/ #