4412 Development Board DVFS Camera Preview Performance test

Kernel: 3.8.13

Arm:ibox 4412

Camera resolution 640x480

160000 (1.6G) at 4 full-core,

echo peformance > Scaling_governor

mem:58220k used, 969844K free, 0K shrd, 268K buff, 2524K cachedcpu:49.7% usr 1.4% sys 0.0% nic 48.7% idle 0.0% io 0.        0% IRQ 0.0% sirqload average:1.01 0.67 0.30 2/59 1427 PID PPID USER STAT VSZ%vsz CPU%cpu COMMAND 1412 1399 0        R 5004 0.4 0 49.7/cam_previewfb0v3 1427 1399 0 R 2392 0.2 1 1.4 top-d1 1399 1 0   S 2392 0.2 0 0.0-/bin/sh 1 0 0 S 2388 0.2 3 0.0 init 372 2 0 SW 0 0.0 0 0.0 [KHUBD] 2 0 SW 0 0.0 1 0.0 [kworker/1:1] 6 2 0 SW 0 0.0 1 0.0 [ KWORKER/U:0] 2 0 RW 0 0.0 2 0.0 [KSOFTIRQD/2] 9 2 0 SW 0 0.0 1 0.0 [rcu_ Preempt] 2 0 SW 0 0.0 1 0.0 [MIGRATION/1] 1356 2 0 SW 0 0.0 0 0.0 [kworker/     0:3] 1324 2 0 SW 0 0.0 0 0.0 [mmcqd/0] 2 0 SW 0 0.0 1 0.0 [KDEVTMPFS] 2       0 0 SW0 0.0 1 0.0 [Kthreadd] 3 2 0 SW 0 0.0 0 0.0 [ksoftirqd/0] 4 2 0 SW 0 0.0 0 0.0 [kworker/0:0] 5 2 0 sw< 0 0.0 0 0.0 [kworker/0:0h] 7 2 0 sw< 0 0   .0 0 0.0 [kworker/u:0h] 8 2 0 SW 0 0.0 0 0.0 [migration/0] 2 0 SW 0 0.0 0 0.0 [RCU_BH]

Maximum frequency set at 1G, quad-core fully open

mem:59380k used, 968684K free, 0K shrd, 272K buff, 2524K cachedcpu:24.6% usr 0.2% sys 0.0% nic 74.8% idle 0.2% io 0.        0% IRQ 0.0% sirqload average:0.82 0.79 0.48 2/61 1471 PID PPID USER STAT VSZ%vsz CPU%cpu COMMAND 1412 1399 0        R 5004 0.4 0 24.6/cam_previewfb0v3 1471 1399 0 R 2392 0.2 3 0.2 top-d1 1399 1 0   s 2392 0.2 1 0.0-/bin/sh 1 0 0 S 2388 0.2 3 0.0 init 2 0 SW 0 0.0 1 0.0 [kworker/1:1] 372 2 0 SW 0 0.0 0 0.0 [KHUBD] 1356 2 0 SW 0 0.0 0 0.0 [ Kworker/0:3] 6 2 0 SW 0 0.0 2 0.0 [kworker/u:0] 2 0 SW 0 0.0 2 0.0 [ksof    TIRQD/2] 9 2 0 SW 0 0.0 3 0.0 [rcu_preempt] 1324 2 0 SW 0 0.0 3 0.0 [mmcqd/0]     2 0 SW 0 0.0 1 0.0 [MIGRATION/1] 2 0 SW 0 0.0 1 0.0 [KDEVTMPFS] 35       2 0 SW0 0.0 2 0.0 [kworker/2:1] PNS 2 0 SW 0 0.0 3 0.0 [kworker/3:1] 1385 2 0 SW 0 0 .0 1 0.0 [jbd2/mmcblk1p3-] 1411 2 0 SW 0 0.0 1 0.0 [flush-179:0] 2 0 0 SW 0 0  .0 1 0.0 [kthreadd] 3 2 0 SW 0 0.0 0 0.0 [ksoftirqd/0] 4 2 0 SW 0 0.0 0 0.0 [kworker/0:0]

Maximum frequency set at 1G, 3 cores Open

mem:59080k used, 968984K free, 0K shrd, 288K buff, 2524K cachedcpu:32.7% usr 0.3% sys 0.0% nic 66.8% idle 0.0% io 0.        0% IRQ 0.0% sirqload average:0.91 0.82 0.52 2/60 1477 PID PPID USER STAT VSZ%vsz CPU%cpu COMMAND 1412 1399 0        R 5004 0.4 0 32.7/cam_previewfb0v3 1477 1399 0 R 2392 0.2 3 0.3 top-d1 1399 1 0   S 2392 0.2 3 0.0-/bin/sh 1 0 0 S 2388 0.2 3 0.0 init 2 0 SW 0 0.0 1 0.0 [kworker/1:1] 372 2 0 SW 0 0.0 0 0.0 [KHUBD] 1356 2 0 SW 0 0.0 0 0.0 [ Kworker/0:3] 6 2 0 SW 0 0.0 2 0.0 [kworker/u:0] 2 0 SW 0 0.0 2 0.0 [ksof    TIRQD/2] 9 2 0 SW 0 0.0 3 0.0 [rcu_preempt] 1324 2 0 SW 0 0.0 3 0.0 [mmcqd/0]     2 0 SW 0 0.0 2 0.0 [kworker/2:1] 2 0 SW 0 0.0 1 0.0 [KDEVTMPFS] 37       2 0 SW0 0.0 3 0.0 [kworker/3:1] 1385 2 0 SW 0 0.0 2 0.0 [jbd2/mmcblk1p3-] 1411 2 0 SW   0 0.0 2 0.0 [flush-179:0] 2 0 0 SW 0 0.0 1 0.0 [Kthreadd] 3 2 0 SW 0 0.0   0 0.0 [ksoftirqd/0] 4 2 0 SW 0 0.0 0 0.0 [kworker/0:0] 5 2 0 sw< 0 0.0 0 0.0 [kworker/0:0h]

Maximum frequency setting 1G, only one core is opened

mem:57916k used, 970148K free, 0K shrd, 300K buff, 2524K cachedcpu:68.3% usr 0.0% sys 0.0% nic 31.6% idle 0.0% io 0.        0% IRQ 0.0% sirqload average:0.76 0.80 0.53 2/58 1481 PID PPID USER STAT VSZ%vsz CPU%cpu COMMAND 1412 1399 0        R 5004 0.4 0 67.2/cam_previewfb0v3 1481 1399 0 R 2392 0.2 0 0.9 top-d1 1399 1 0   S 2392 0.2 0 0.0-/bin/sh 1 0 0 S 2388 0.2 3 0.0 init 2 0 SW 0 0.0 1 0.0 [kworker/1:1] 372 2 0 SW 0 0.0 0 0.0 [KHUBD] 1356 2 0 SW 0 0.0 0 0.0 [ Kworker/0:3] 6 2 0 SW 0 0.0 0 0.0 [kworker/u:0] 2 0 RW 0 0.0 2 0.0 [ksof    TIRQD/2] 9 2 0 SW 0 0.0 0 0.0 [rcu_preempt] 1324 2 0 SW 0 0.0 0 0.0 [mmcqd/0]    2 0 SW 0 0.0 2 0.0 [kworker/2:1] 1385 2 0 SW 0 0.0 0 0.0 [jbd2/mmcblk1p3-] 2 0 SW      0 0.0 1 0.0 [KDEVTMPFS] PNS 2 0 SW 0 0.0 3 0.0 [kworker/3:1] 1411 2 0 SW   0 0.0 0 0.0 [flush-179:0] 2 0 0 SW 0 0.0 1 0.0 [Kthreadd] 3 2 0 SW 0 0.0   0 0.0 [ksoftirqd/0] 4 2 0 SW 0 0.0 0 0.0 [kworker/0:0] 5 2 0 sw< 0 0.0 0 0.0 [kworker/0:0h]

Minimum performance mode, frequency 200MHz, only two cores open (LCD preview screen very lag)

echo PowerSave > Cpu0/cpufreq/scaling_governor
Cpu3:shutdown
Cpu2:shutdown

Mem:58672k used, 969392K free, 0K shrd, 340K buff, 2524K cachedcpu:49.7% usr  1.9% sys  0.0% NIC 48.3% idle &N bsp;0.0% io  0.0% IRQ  0.0% sirqload average:0.99 0.80 0.65 2/59 1495  PID  ppid USER     S TAT   VSZ%vsz CPU%cpu command 1412  1399 0        r     5004  0.4 &nbs P 0 49.7/cam_previewfb0v3 1495  1399 0        r     2392  0.2   1   1.4 top-d1 1399     1 0        s     2392  0.2   1  0.0-/bin /sh    1     0 0        s     2388  0.2   3  0.0 Init&nbs P  34     2 0        SW       0  0.0   1  0.0 [kworker/1:1]   372     2 0        SW       0  0.0   0  0.0 [Khubd]&nbs p;1356   &nbsP 2 0        SW       0  0.0   0  0.0 [kworker/0:3]    6     2 0        SW       0  0.0   3  0.0 [kworker/u:0]    4     2 0        SW       0  0.0   0  0.0 [kworker/0:0]  &N Bsp 9     2 0        SW       0  0.0   1  0.0 [rcu_preempt]   16     2 0        RW       0  0.0   2  0.0 [KSOFTIRQD/2]  1324     2 0        SW       0  0.0   1  0.0 [MMCQD/0]&N Bsp  35     2 0        SW       0  0.0   2  0.0 [kworker/2:1]    37     2 0        SW       0  0.0   3  0.0 [Kwork Er/3:1] 1385     2 0        SW       0  0.0   1  0.0 [jbd2/mmcblk1p3 -] 1411     2 0        SW       0  0.0   1  0.0 [flush-17 9:0]   14     2 0        SW       0  0.0   1  0.0 [k worker/1:0]   26     2 0        SW       0  0.0   1 &nbsp ; 0.0 [kdevtmpfs]    2     0 0        SW       0  0.0   0  0.0 [kthreadd]    3     2 0        SW       0  0.0 &nbsp ; 0  0.0 [ksoftirqd/0]

Minimum performance mode, 200MHz, open only one core (screen lag, almost full load operation)

mem:58020k used, 970044K free, 0K shrd, 352K buff, 2524K cachedcpu:97.1% usr 2.8% sys 0.0% nic 0.0% idle 0.0% io 0.        0% IRQ 0.0% sirqload average:1.00 0.87 0.69 2/58 PID PPID USER STAT VSZ%vsz CPU%cpu COMMAND 1412 1399 0        R 5004 0.4 0 97.0/cam_previewfb0v3 1399 0 R 2392 0.2 0 2.8 top-d1 1399 1 0   S 2392 0.2 0 0.0-/bin/sh 1 0 0 S 2388 0.2 3 0.0 init 2 0 SW 0 0.0 1 0.0 [kworker/1:1] 372 2 0 SW 0 0.0 0 0.0 [KHUBD] 4 2 0 SW 0 0.0 0 0.0 [ KWORKER/0:0] 1356 2 0 SW 0 0.0 0 0.0 [Kworker/0:3] 6 2 0 SW 0 0.0 0 0.0 [kwor KER/U:0] 9 2 0 SW 0 0.0 0 0.0 [rcu_preempt] 2 0 RW 0 0.0 2 0.0 [KSOFTIRQ D/2] 1324 2 0 SW 0 0.0 0 0.0 [mmcqd/0] 2 0 SW 0 0.0 2 0.0 [kworker/2:1] 1     4 2 0 SW  0 0.0 1 0.0 [kworker/1:0] PNS 2 0 SW 0 0.0 3 0.0 [kworker/3:1] 1385 2 0 SW 0  0.0 0 0.0 [jbd2/mmcblk1p3-] 1411 2 0 SW 0 0.0 0 0.0 [flush-179:0] 8 2 0 SW 0   0.0 0 0.0 [migration/0] 2 0 SW 0 0.0 1 0.0 [KDEVTMPFS] 2 0 0 SW 0 0.0 0 0.0 [Kthreadd]

4412 Development Board DVFS Camera Preview Performance test