using ltp-ddt to test USB-disk write speed.

bingyi cheng

Now we can run ltp-ddt on dm8168 custom board,on software platform,DVRRDK_04.01.00.02。But I don't know how can I use it to test USB-disk write speed.

I use the below cmd to test USB-disk write speed,but I don't know how to undetstand the message(please see the attachement)

./runltp -P dm816x-evm -f ddt/usbhost_dd_rw_ext2

Can this attachment help us to see how much the write speed is?

1362.rec.2016-12-02.test.usb.txt

over 7 years ago

0 bingyi cheng over 7 years ago

Intellectual 900 points

which cmd we should use to test USB disk write speed?thanks.

0 bingyi cheng over 7 years ago in reply to bingyi cheng

Intellectual 900 points

We used below cmd
./runltp -P dm816x-evm -f ddt/usbhost_perf_ext2

and the message show that:

|TEST START|filesystemTests|
******** filesystem Testcase parameters ********
|TRACE LOG|The file name|/mnt/partition_usb/test_file_7604|
|TRACE LOG|The application buffer size in bytes|102400|
|TRACE LOG|file size in MB|100.00|
|TRACE LOG|Iomode|write|
|TRACE LOG|srcfile size in MB|10.00|
************* End of Test params *****************
|TRACE LOG|mmap srcfile |
|TRACE LOG|filewrite | Durartion in usecs | 19567158|
|TRACE LOG|filewrite | Mega Bytes/Sec | 5.358857|
|TRACE LOG|filewrite | percentage cpu load | 3.17%|
|TRACE LOG||PERFDATA|bsize:102400|iomode:write|throughput:5.36MB/S|cpuload:3.17%||

0 Pavel Botev over 7 years ago in reply to bingyi cheng

TI__Guru**** 170625 points

Hi Bingyi,

Do you configure your DM816x USB in host mode and MSC? Do you connect HDD (hard drive disk) to the DM816x USB port?

See if the below wiki pages will be in help:

processors.wiki.ti.com/.../TI81XX_PSP_04.04.00.02_Feature_Performance_Guide
processors.wiki.ti.com/.../Sitara_PSP_Test_Setup
processors.wiki.ti.com/.../LTP-DDT

Regards,
Pavel

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using ltp-ddt to test USB-disk write speed.