本次測試板卡是創龍科技旗下，一款基于全志科技A40i開發板，其接口資源豐富，可引出雙路網口、雙路CAN、雙路USB、雙路RS485等通信接口，板載Bluetooth、WIFI、4G（選配）模塊，同時引出MIPI LCD、LVDS LCD、TFT LCD、HDMI OUT、CVBS OUT、CAMERA、LINE IN、H/P OUT等音視頻多媒體接口，支持雙屏異顯、1080P@45fps H.264視頻硬件編碼、1080P@60fps H.264視頻硬件解碼，并支持SATA大容量存儲接口。

以下是測評用戶編寫的測評內容，歡迎閱讀：

前言

之前進行了開發環境的體驗，現在對各方面的性能進行一個定性體驗。

跑分

打開WSL終端

下載代碼

git clone https://github.com/eembc/coremark.git

cd coremark/

vi simple/core_portme.h

修改

#define COMPILER_FLAGS \

FLAGS_STR /* "Please put compiler flags here (e.g. -o3)" */

#endif

為

#define COMPILER_FLAGS \

"-O3" /* "Please put compiler flags here (e.g. -o3)" */

#endif

如果-O0編譯則改為”-O0”

typedef ee_u32 ee_ptr_int;

改為

typedef unsigned long ee_ptr_int;

編譯

export PATH=$PATH:~/lichee/out/sun8iw11p1/linux/common/buildroot/host/usr/bin

arm-linux-gnueabihf-gcc -o coremarko0 core_list_join.c core_main.c core_matrix.c core_state.c core_util.c simple/core_portme.c -DPERFORMANCE_RUN=1 -DITERATIONS=100000 -Isimple -I. -O0

arm-linux-gnueabihf-gcc -o coremarko3 core_list_join.c core_main.c core_matrix.c core_state.c core_util.c simple/core_portme.c -DPERFORMANCE_RUN=1 -DITERATIONS=100000 -Isimple -I. -O3

導入到windows下

cp coremarko0 coremarko3 /mnt/d

然后通過串口rz導入到開發板

添加可執行權限

chmod +x coremarko0 coremarko3

運行

./coremarko0

./coremarko3

結果如下,可以看到優化不同差距較大

root@T3/A40i-Tronlong:~# ./coremarko0

2K performance run parameters for coremark.

CoreMark Size : 666

Total ticks : 146952831

Total time (secs): 146.952831

Iterations/Sec : 680.490463

Iterations : 100000

Compiler version : GCC9.4.0

Compiler flags : -O0

Memory location : STACK

seedcrc : 0xe9f5

[0]crclist : 0xe714

[0]crcmatrix : 0x1fd7

[0]crcstate : 0x8e3a

[0]crcfinal : 0xd340

Correct operation validated. See README.md for run and reporting rules.

CoreMark 1.0 : 680.490463 / GCC9.4.0 -O0 / STACK

root@T3/A40i-Tronlong:~# ./coremarko3

2K performance run parameters for coremark.

CoreMark Size : 666

Total ticks : 29362505

Total time (secs): 29.362505

Iterations/Sec : 3405.703975

Iterations : 100000

Compiler version : GCC9.4.0

Compiler flags : -O0

Memory location : STACK

seedcrc : 0xe9f5

[0]crclist : 0xe714

[0]crcmatrix : 0x1fd7

[0]crcstate : 0x8e3a

[0]crcfinal : 0xd340

Correct operation validated. See README.md for run and reporting rules.

CoreMark 1.0 : 3405.703975 / GCC9.4.0 -O0 / STACK

從https://www.eembc.org/coremark/scores.php

搜索Cortex-A7可以對比同型號CPU的得分。

Cortex - A7 1.2GHz

RAM性能測試

WSL中

下載代碼

git clone https://github.com/qinyunti/STREAM.git

cd STREAM/

編譯

export PATH=$PATH:~/lichee/out/sun8iw11p1/linux/common/buildroot/host/usr/bin

arm-linux-gnueabihf-gcc -O3 -DSTREAM_ARRAY_SIZE=5000000 stream.c -o stream.5M

導出到windows下

cp stream.5M /mnt/d

然后通過串口rz導入到開發板

添加可執行權限

chmod +x stream.5M

運行

./stream.5M

結果如下

root@T3/A40i-Tronlong:~# ./stream.5M

-------------------------------------------------------------

STREAM version $Revision: 5.10 $

-------------------------------------------------------------

This system uses 8 bytes per array element.

-------------------------------------------------------------

Array size = 5000000 (elements), Offset = 0 (elements)

Memory per array = 38.1 MiB (= 0.0 GiB).

Total memory required = 114.4 MiB (= 0.1 GiB).

Each kernel will be executed 10 times.

The *best* time for each kernel (excluding the first iteration)

will be used to compute the reported bandwidth.

-------------------------------------------------------------

Your clock granularity/precision appears to be 1 microseconds.

Each test below will take on the order of 52219 microseconds.

(= 52219 clock ticks)

Increase the size of the arrays if this shows that

you are not getting at least 20 clock ticks per test.

-------------------------------------------------------------

WARNING -- The above is only a rough guideline.

For best results, please be sure you know the

precision of your system timer.

-------------------------------------------------------------

Function Best Rate MB/s Avg time Min time Max time

Copy: 972.1 0.083436 0.082297 0.084256

Scale: 868.5 0.092398 0.092110 0.092609

Add: 829.7 0.144716 0.144639 0.144788

Triad: 683.4 0.175755 0.175587 0.175917

-------------------------------------------------------------

Solution Validates: avg error less than 1.000000e-13 on all three arrays

參考https://www.cs.virginia.edu/stream/ref.html

RAM壓力測試

參考 https://pyropus.ca./software/memtester/

WSL中

下載代碼

wget https://pyropus.ca./software/memtester/old-versions/memtester-4.5.1.tar.gz

tar -xvf memtester-4.5.1.tar.gz

cd memtester-4.5.1/

編譯

export PATH=$PATH:~/lichee/out/sun8iw11p1/linux/common/buildroot/host/usr/bin

arm-linux-gnueabihf-gcc -O3 memtester.c tests.c -o memtester

導出到WINDOWS下,下載到開發板

cp memtester /mnt/d

chmod +x memtester

運行

./memtester

運行結果如下,默認一直測試下去,可以最后指定測試次數

比如

./memtester 128M 1

128M表示測試RAM大小

1表示測試一次

另外也可以-p直接指定物理地址,適合在板子開發階段裸機代碼直接指定物理地址測試。

root@T3/A40i-Tronlong:~# ./memtester 128M 1

memtester version 4.5.1 (32-bit)

Copyright (C) 2001-2020 Charles Cazabon.

Licensed under the GNU General Public License version 2 (only).

pagesize is 4096

pagesizemask is 0xfffff000

want 128MB (134217728 bytes)

got 128MB (134217728 bytes), trying mlock ...locked.

Loop 1/1:

Stuck Address : ok

Random Value : ok

Compare XOR : ok

Compare SUB : ok

Compare MUL : ok

Compare DIV : ok

Compare OR : ok

Compare AND : ok

Sequential Increment: ok

Solid Bits : ok

Block Sequential : ok

Checkerboard : ok

Bit Spread : ok

Bit Flip : ok

Walking Ones : ok

Walking Zeroes : ok

Done.

EMMC性能測試

dmesg | grep mmc

4GEMMC

[ 4.008550] mmc0: new HS200 MMC card at address 0001

[ 4.009409] mmcblk0: mmc0:0001 S04111 3.56 GiB

和16G的SD卡

[ 8.202017] mmc1: new high speed SDHC card at address aaaa

[ 8.208872] mmcblk1: mmc1:aaaa SL16G 14.8 GiB

EMMC速度為HS200

df查看,使用/目錄進行讀寫測試

root@T3/A40i-Tronlong:~# df

Filesystem 1K-blocks Used Available Use% Mounted on

/dev/root 2029971 514680 1406338 27% /

devtmpfs 107996 0 107996 0% /dev

tmpfs 124604 0 124604 0% /dev/shm

tmpfs 124604 8 124596 0% /tmp

tmpfs 124604 12 124592 0% /run

cgroup 124604 0 124604 0% /sys/fs/cgroup

root@T3/A40i-Tronlong:~#

不插入SD卡 /掛載在emmc

root@T3/A40i-Tronlong:/# time dd if=/dev/zero of=/test.bin bs=16k count=65536

65536+0 records in

65536+0 records out

real 0m37.581s

user 0m0.080s

sys 0m15.230s

root@T3/A40i-Tronlong:/# time dd if=test.bin of=/dev/null bs=16k count=65536

65536+0 records in

65536+0 records out

real 0m10.386s

user 0m0.070s

sys 0m4.040s

root@T3/A40i-Tronlong:/#

以上僅作參考，實際欸有考慮緩存的影響。

SD卡性能測試

插入SD卡后重啟，自動掛在到/root到SD卡

root@T3/A40i-Tronlong:~# time dd if=/dev/zero of=/root/test.bin bs=16k count=65536

65536+0 records in

65536+0 records out

real 1m32.412s

user 0m0.330s

sys 0m17.700s

root@T3/A40i-Tronlong:~# time dd if=/root/test.bin of=/dev/null bs=16k count=65536

65536+0 records in

65536+0 records out

real 0m48.177s

user 0m0.100s

sys 0m4.350s

速度和SD卡本身有關，也沒有考慮緩存，所以結果僅作參考。

總結

以上綜合對性能進行了測試,感覺性能還是非常不錯的，各測試結果僅作參考，因為環境等因素不一樣測得結果也會不一樣，包括存儲的測試方法也不是很科學，比如沒有考慮緩存等。上述測試只是一個定性的性能體驗，板子的性能是一個綜合的體驗，需要是面對真實的應用場景才有意義，并且針對場景優化也很重要。