![#!/bin/sh
# Get current system memory max and usage, in that order
mem_system=`free -m | grep Mem: | gawk '{print $2,$3}'`
# Start by getting the pid of the largest java process
java_pid=`top -b -n 1|awk '{if ($1~/[0-9]+/) {if ($5~/m/)
{$5=int($5*1024*1024)};print}}'|sort -k5rn,5 | grep java
| head -n1 | gawk '{print $1}'`
# Get the actual heap usage
mem_heap=`jstat -gc $java_pid | tail -n 1 | gawk '{print
($1+$2+$5+$7+$9)/1000,($3+$4+$6+$8+$10)/1000}'`
Adding Memory Usage](https://image.slidesharecdn.com/xdonrefctrsxpfufcsvk-signature-cf8b49e9871c782e3fcf1b83c14d935e350d324f5b1e9ca6c8f7457823e5822c-poli-150526190435-lva1-app6892/85/Raspberry-Pi-a-la-CFML-31-320.jpg)
![[JAM 1.2] Design & Multitasking (Andrew Solovey)](https://cdn.slidesharecdn.com/ss_thumbnails/1-110415015750-phpapp02-thumbnail.jpg?width=560&fit=bounds)
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Raspberry Pi a la CFML
- 1. Raspberry Pi A La CFML Tasty, tasty CFML on a Pi Brad Wood @bdw429s pi.bradwood.com
- 2. ● ColdFusion Architect (12 years) ● Geek ● Android Lover ● Blogger (codersrevolution.com) ● ColdBox Platform Evangelist ● Musician ● Shade-Tree Mechanic ● Husband (12 years) ● Dad (3 beautiful girls) The Weird Dude With The Mic
- 3. What Is It?
- 4. What Is It?
- 5. Arduino Haven’t I seen this before? Raspberry Pi
- 6. ● $35 $25 ● 1 GB Ram ● 900 MHz Quadcore ARM CPU (overclockable) ● HDMI ● 4x USB ● Micro USB power ● Audio Jack ● Camera Interface ● Network ● GPIO ● Micro SD What Is It?
- 7. Fits in the palm of your hand. What Is It?
- 8. Well, almost... What Is It?
- 9. ● 2A power adapter ● USB Keyboard ● USB Mouse ● MicroSD card ● An operating system ● HDMI display ● Wifi or Ethernet hookup ● LED-adorned hat (optional) You also want/need…
- 10. It Does Cool Stuff!
- 13. Make a cool case Like What?
- 15. Program in Python (Scratch) Like What?
- 17. Robot Like What?
- 18. Make a 4-RPI Cluster Like What?
- 19. Make a 40-RPI Cluster Like What?
- 20. Make a 64-RPI Cluster Like What?
- 21. And you can run CFML Like What?
- 22. ● NOOBS ● Raspbian Linux (Debian) ○ Gnome Desktop (Pi Store) ○ Bash (apt-get) ● Oracle Java 1.8 (ARM) ● SSH Environment
- 23. ● PuTTY ● IP Address?? (Router, Nmap) ● CommandBox 2.0.0 beta ○ REPL ○ ForgeBox ○ Embedded Server Tools
- 24. /etc/apt/sources.list.d/box.list $> apt-get install commandbox /usr/bin/box $> box version Install CommandBox
- 26. myScript #! /usr/bin/env box <cfoutput>#now()#</cfoutput> $> chmod a+x myScript $> ./myScript Run CFML!
- 27. $> box CommandBox> install contentbox CommandBox> start --rewritesEnabled In-memory H2 DB Install ContentBox
- 29. #!/bin/sh # Get current CPU usage (10-second average, actually) top -bn 2 -d 10 | grep '^%Cpu' | tail -n 1 | gawk '{print $2+$4+$6}' >> ~/stats.txt <div style="float:right;"> #cb.widget("cpu-load")# </div> Adding CPU Load
- 30. Adding CPU Load “Flot” JS graphing lib
- 31. #!/bin/sh # Get current system memory max and usage, in that order mem_system=`free -m | grep Mem: | gawk '{print $2,$3}'` # Start by getting the pid of the largest java process java_pid=`top -b -n 1|awk '{if ($1~/[0-9]+/) {if ($5~/m/) {$5=int($5*1024*1024)};print}}'|sort -k5rn,5 | grep java | head -n1 | gawk '{print $1}'` # Get the actual heap usage mem_heap=`jstat -gc $java_pid | tail -n 1 | gawk '{print ($1+$2+$5+$7+$9)/1000,($3+$4+$6+$8+$10)/1000}'` Adding Memory Usage
- 33. Rate Limiter installed Posted to Reddit!
- 34. Performance test parameters ● No overclocking ● Bumped heap size to 768 MB ● Simple page with #now()# output ● Use CLI load tool call “Siege” ● Started with 1 thread and increased to 100 threads How fast does this baby go?
- 35. #!/bin/bash url="http://192.168.1.xxx/bench/" reqs=5000 NUMS="1 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100" for NUM in $NUMS do RPS=`siege -r $((reqs/NUM)) -c $NUM "$url" 2>&1 | grep "Transaction rate:" | awk '{print $3}'` echo -e "$NUMt$RPS" done How fast does this baby go?
- 36. How fast does this baby go? 1000 request per second!
- 37. What’s Next?
- 38. GPIO (General Purpose Input Output) ● 40 pins of wonderment ○ 8 Ground pins ○ 2 +3.3v pins (50 mA max) ○ 2 +5v pins (direct current from power supply ) ○ 28 digital pins 3.3v “high” (50 mA max) ● Three different naming schemes ○ Broadcom (BCM) chip numbers ○ Physical header position ○ Wiring Pi Numbers
- 39. GPIO (General Purpose Input Output)
- 40. GPIO (General Purpose Input Output) ● Cobbler (breakout) board ● Solderless Breadboard ● Red LED ● 330 Ohm resistor ● Hook in series between digital pin and ground
- 41. Pi4J ● Java-based library for interacting with GPIO pins ● Wraps “native” JNI calls to C library ● Easy to use from CFML! Yum!!
- 42. Pi4J $> curl -s get.pi4j.com | sudo bash $> cp /opt/pi4j/lib/pi4j-core.jar ~/.CommandBox/lib/ $> cp /opt/pi4j/lib/pi4j-device.jar ~/.CommandBox/lib/ $> cp /opt/pi4j/lib/pi4j-service.jar ~/.CommandBox/lib/ $> cp /opt/pi4j/lib/pi4j-gpio-extension.jar ~/.CommandBox/lib/
- 43. CommandBox REPL + Pi4J = Blinky Blinky LED GPIO = createObject( 'java', 'com.pi4j.io.gpio.GpioFactory').getInstance() pinState = createObject( 'java', 'com.pi4j.io.gpio.PinState') Raspipin = createObject( 'java', 'com.pi4j.io.gpio.RaspiPin') LED = GPIO.provisionDigitalOutputPin( RaspiPin.GPIO_01, "MyLED", PinState.HIGH)
- 44. CommandBox REPL + Pi4J = Blinky Blinky LED // Have you tried turning it // off and back on again? LED.low() LED.high() // Toggle the current state LED.toggle() // On and back off once LED.pulse( 2000 )
- 45. The (LED) Matrix has you 64 LEDs (8x8)
- 46. The (LED) Matrix has you Only 16 pins!
- 47. The (LED) Matrix has you
- 48. The (LED) Matrix has you --Multiplexing-- Only one column can be lit at a time.
- 49. The (LED) Matrix has you Inline 330 Ohm resistor on each row Each column switched to ground via NPN transistor
- 50. The (LED) Matrix has you CFML Redraw each column > 60 times a second
- 51. The (LED) Matrix has you
- 52. Shift Your Focus Shift Register
- 53. Shift Your Focus SIPO -- Serial In, Parallel Out
- 54. Shift Your Focus 1 0 1 0 1 0 1 0 Bit banging Allows transfer of large amount of data over a few wires in “chunks”
- 55. Shift Your Focus 5 input wires drives 16 output Data Clock Latch 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 5V GND
- 56. Shift Your Focus
- 57. Design In Flux
- 58. Design In Flux
- 59. Wired To The Brim
- 60. Wired To The Brim
- 63. Is that bacon I smell?
- 64. Is that bacon I smell?
- 65. What’s Next? ● Interactive projects (control from web) ● Clustered Pis (CFML, Couchbase, etc) ● Home Automation ● CFGPIO library ● What will you build?