一、基本介绍（8核 A55）

        全志科技T527采用多核异构设计，集成了CPU、GPU、NPU、DSP、MCU等各种计算单元，为各种复杂场景的多任务处理、专用数据处理以及算法应用提供了高效且灵活的解决方案。

其中：

· T527集成了8核1.8GHz ARM CortexTM-A55内核，能够高效处理系统调度和并发业务，确保产品更好的性能表现和交互体验；

· G57 GPU则为游戏体验、多屏显示及多屏互动提供了图形应用支撑；

· 独立的NPU，算力高达2Tops，为端侧语音及自然语言处理，图像处理及画质增强等AI应用提供了性能支持；

· 专用DSP能够广泛应用于图像、音频及数字信号处理的专用领域，为影音娱乐、工业生产提供了专属算力；

· RISC-V内核运行RTOS系统，为工业及机器人系统上的实时处理、高速响应以及工业级的稳定运行提供了重要保障。

二、DTS信息

cpus {#address-cells = <2>;#size-cells = <0>;cpu0: cpu@0 {device_type = "cpu";compatible = "arm,cortex-a55";reg = <0x0 0x0>;enable-method = "psci";cpu-idle-states = <&CPU_SLEEP_0 &CLUSTER_SLEEP_0>;capacity-dmips-mhz = <922>;clocks = <&cpupll_ccu CLK_PLL_CPU1>;operating-points-v2 = <&cluster0_opp_table>;#cooling-cells = <2>;dynamic-power-coefficient = <286>;};cpu1: cpu@100 {device_type = "cpu";compatible = "arm,cortex-a55";reg = <0x0 0x100>;enable-method = "psci";cpu-idle-states = <&CPU_SLEEP_0 &CLUSTER_SLEEP_0>;capacity-dmips-mhz = <922>;clocks = <&cpupll_ccu CLK_PLL_CPU1>;operating-points-v2 = <&cluster0_opp_table>;#cooling-cells = <2>;};cpu2: cpu@200 {device_type = "cpu";compatible = "arm,cortex-a55";reg = <0x0 0x200>;enable-method = "psci";cpu-idle-states = <&CPU_SLEEP_0 &CLUSTER_SLEEP_0>;capacity-dmips-mhz = <922>;clocks = <&cpupll_ccu CLK_PLL_CPU1>;operating-points-v2 = <&cluster0_opp_table>;#cooling-cells = <2>;};cpu3: cpu@300 {device_type = "cpu";compatible = "arm,cortex-a55";reg = <0x0 0x300>;enable-method = "psci";cpu-idle-states = <&CPU_SLEEP_0 &CLUSTER_SLEEP_0>;capacity-dmips-mhz = <922>;clocks = <&cpupll_ccu CLK_PLL_CPU1>;operating-points-v2 = <&cluster0_opp_table>;#cooling-cells = <2>;};cpu4: cpu@400 {device_type = "cpu";compatible = "arm,cortex-a55";reg = <0x0 0x400>;enable-method = "psci";cpu-idle-states = <&CPU_SLEEP_0 &CLUSTER_SLEEP_0>;capacity-dmips-mhz = <1024>;clocks = <&cpupll_ccu CLK_PLL_CPU3>;operating-points-v2 = <&cluster1_opp_table>;#cooling-cells = <2>;dynamic-power-coefficient = <354>;};cpu5: cpu@500 {device_type = "cpu";compatible = "arm,cortex-a55";reg = <0x0 0x500>;enable-method = "psci";cpu-idle-states = <&CPU_SLEEP_0 &CLUSTER_SLEEP_0>;capacity-dmips-mhz = <1024>;clocks = <&cpupll_ccu CLK_PLL_CPU3>;operating-points-v2 = <&cluster1_opp_table>;#cooling-cells = <2>;};cpu6: cpu@600 {device_type = "cpu";compatible = "arm,cortex-a55";reg = <0x0 0x600>;enable-method = "psci";cpu-idle-states = <&CPU_SLEEP_0 &CLUSTER_SLEEP_0>;capacity-dmips-mhz = <1024>;clocks = <&cpupll_ccu CLK_PLL_CPU3>;operating-points-v2 = <&cluster1_opp_table>;#cooling-cells = <2>;};cpu7: cpu@700 {device_type = "cpu";compatible = "arm,cortex-a55";reg = <0x0 0x700>;enable-method = "psci";cpu-idle-states = <&CPU_SLEEP_0 &CLUSTER_SLEEP_0>;capacity-dmips-mhz = <1024>;clocks = <&cpupll_ccu CLK_PLL_CPU3>;operating-points-v2 = <&cluster1_opp_table>;#cooling-cells = <2>;};

三、测试方法

1.stress-ng CPU压力测试

（1）基本 CPU 压力测试

stress-ng --cpu 4 --timeout 60s

（2）浮点运算压力测试

stress-ng --cpu 4 --cpu-method flops --timeout 60s

（3）矩阵乘法压力测试

stress-ng --cpu 4 --cpu-method matrixprod --timeout 60s

（4）质数计算压力测试

stress-ng --cpu 4 --cpu-method prime --timeout 60s

（5）混合 CPU 压力测试

stress-ng --cpu 4 --cpu-method mix --timeout 60s

（6）多线程 CPU 压力测试（75% 负载）

stress-ng --cpu 4 --cpu-load 75 --timeout 60s

（7）同时对 CPU 和内存进行压力测试

stress-ng --cpu 4 --vm 2 --vm-bytes 512M --timeout 60s

stress-ng --cpu 8 --cpu-load 700 --vm 2 --vm-bytes 512M --timeout 60s

taskset -c 1 stress-ng --cpu 1 --vm 1 --vm-bytes 512M --timeout 60s

（8）同时8核 CPU MEM压力测试

#taskset 指定核

taskset -c 0 stress-ng --cpu 1 --vm 1 --vm-bytes 400M --timeout 60s &

taskset -c 1 stress-ng --cpu 1 --vm 1 --vm-bytes 400M --timeout 60s &

（9）8核

run_stress_test.sh 0 7 &

#!/bin/bash# 检查参数是否正确
if [ "$#" -ne 2 ]; thenecho "Usage: $0 <start_core> <end_core>"exit 1
fi# 获取输入参数
start_core=$1
end_core=$2# 检查 start_core 和 end_core 是否合法
if [ "$start_core" -gt "$end_core" ] || [ "$end_core" -gt 7 ]; thenecho "Invalid core range: $start_core-$end_core"exit 1
fi# 循环遍历指定的核心范围，运行压力测试
for ((core=start_core; core<=end_core; core++)); doecho "Running stress test on CPU core $core..."taskset -c $core stress-ng --cpu 1 --vm 1 --vm-bytes 512M --timeout 60s
doneecho "Stress test completed."