SBC Box Stress Test Report

NTU Group

May 1, 2014

NTU Group () SBC Box Stress Test Report May 1, 2014 1 / 14

SBC Box Stress Test Conditions

Pressure Conditioning: < 3mbar(gauge limit)

System Stress Test Items: 8 cpu, 4 io, 2 vm, 1 hdd

Internet Stress Test Item: iperf -c 192.168.0.100 -d -t 200000 -i 10 -u-b 2000MB

File System: ext4 and vfat format both.

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SBC Box

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Vacuum Chamber

Figure: Iron vacuum chamber. 2 feedthrough with 9 pins. Inner dimension is42cm(D)*60cm(H).

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Layout of Chamber and SBC Box

Figure: The SBC box put on the bottom of chamber.

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Power Consumptions during Booting Operating System

Figure: During booting the system, the power consumption approx stable around2 minutes.

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The Pressure and Temperature during Decompression

Figure: During the pressure lowing, the system temperature doesn’t change a lot.

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The Test Schedule

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Stress Test with Normal Pressure

One SSD(/dev/sda1) passed 24 hr stress test.(file format: vfat).

Five 1T SSD are tested with one hour short time stress testindividually, one of it(/dev/sdf1) cannot pass the stress test.(fileformat: ext4)

The system shows the permission error during the stress test (this teststart at 00:45):stress: FAIL: [2511] (581) write failed: Read-only file systemstress: FAIL: [2495] (394) <– worker 2511 returned error 1stress: WARN: [2495] (396) now reaping child worker processesstress: FAIL: [2495] (400) kill error: No such processstress: FAIL: [2495] (451) failed run completed in 1667sMessage from syslogd@localhost at May 1 01:15:21 ... kernel:journalcommit I/O errorAfter re-booting the system, The fail SSD cannot be found under /devanymore.

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3600 Seconds(1 hours) Stress Test with Normal Pressure

Figure: The temperature and power consumption of SBC system are record every10 second. I take /dev/sdb1 as example.

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90000 Seconds(25 hours) Stress Test with Low Pressure(<4 mbar)

Figure: The temperature and power consumption of SBC system are record every10 second. We only tested one SSD with vfat format, but ext4.

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Internet Test

fluctuation: from ˜23 to 68 Mbits/sec[ ID] Interval Transfer Bandwidth[ 4] 0.0-10.0 sec 63.4 MBytes 53.2 Mbits/sec[ 4] 10.0-20.0 sec 41.5 MBytes 34.8 Mbits/sec[ 4] 20.0-30.0 sec 27.5 MBytes 23.1 Mbits/sec[ 4] 30.0-40.0 sec 39.8 MBytes 33.4 Mbits/sec[ 4] 39700.0-39710.0 sec 27.1 MBytes 22.7 Mbits/sec[ 4] 39710.0-39720.0 sec 25.3 MBytes 21.3 Mbits/sec[ 4] 39720.0-39730.0 sec 36.9 MBytes 31.0 Mbits/sec[ 4] 86380.0-86390.0 sec 64.8 MBytes 54.3 Mbits/sec[ 4] 86390.0-86400.0 sec 67.1 MBytes 56.3 Mbits/sec[ 4] 86400.0-86410.0 sec 66.7 MBytes 55.9 Mbits/sec

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Summary

5 SSD have been tested with short time(one hour) stress test withext4 format, One SSD(/dev/sdf1) cannot passed the stress test.

One SSD has already passed the 24 hr stress test in both normal andlow pressure condition (vfat format).

Testing the other 4 SSD(passed the short time) for 24 hrs stress testin the low pressure with ext4 format again.

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