Monday, March 14, 2016

Happy Pi Day!

Success in loading NOOBS and Raspbian, no issues and the documentation is fine.
I will begin functional testing of the base system with iozone, confirming that the microsd card is capable of recording audio, and if a USB flash drive has the necessary bandwidth as well.

/proc/cpuinfo shows four identical cores.  Interesting that there is a serial number.

...
processor       : 3
model name      : ARMv7 Processor rev 4 (v7l)
BogoMIPS        : 76.80
Features        : half thumb fastmult vfp edsp neon vfpv3 tls vfpv4 idiva idivt vfpd32 lpae evtstrm crc32
CPU implementer : 0x41
CPU architecture: 7
CPU variant     : 0x0
CPU part        : 0xd03
CPU revision    : 4

Hardware        : BCM2709
Revision        : a02082
Serial          : 00000000f70e895a


apt-get update and apt-get upgrade do the expected, after setting up the WiFi.  All in all this is an easy to use linux system.

I run iozone with this script:

cd /mnt/sda2
/home/pi/src/iozone3_434/src/current/iozone -Rab usb2.0_PNY.xls -i 0 -i 1 -g 1G -+u -f /mnt/sda2/tmp -z> usb2.0_PNY.out
/home/pi/src/iozone3_434/src/current/iozone -Rab SanDisk_SDSQUNC.xls -i 0 -i 1 -g 1G -+u -f /tmp/x -z > SanDisk_SDSQUNC.out


I had to download iozone3_434.tar and compile it, no problems but it is in my wheezy linux repository as iozone3 and I was able to apt-get install iozone3 on a debian system.

This benchmark can produce 3d color graphs of disk performance comparisons, so I will be posting them as I run them. 
  

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