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![#!/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/w7lke6gtqvklkgvclyjk-signature-e847456c6a6f52f4d0f0f7669a8f77f77a8ca5cc3daa63de0a00591556073525-poli-150518152323-lva1-app6892/85/Raspberry-pi-a-la-cfml-31-320.jpg)
Uploaded byColdFusionConference
Raspberry pi a la cfml
1) The document discusses running ColdFusion on a Raspberry Pi single board computer. It provides details on setting up the Pi with Raspbian Linux, Oracle Java, and the CommandBox CFML engine. 2) Examples are given of running simple CFML files and scripts to output the current date/time using CommandBox. Additional software like ContentBox is installed to create a basic website. 3) The document explores using the Pi's GPIO pins to blink an LED and discusses possibilities for creating an 8x8 LED matrix display with ColdFusion code. Shift registers are mentioned as a way to control more outputs with fewer pins.
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Raspberry pi a la cfml
- 1. Raspberry Pi ALa 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
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- 5. Arduino Haven’t I seenthis 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 thepalm of your hand. What Is It?
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- 9. ● 2A poweradapter ● 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 CoolStuff!
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- 13. Make a coolcase Like What?
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- 15. Program in Python(Scratch) Like What?
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- 18. Make a 4-RPICluster Like What?
- 19. Make a 40-RPICluster Like What?
- 20. Make a 64-RPICluster Like What?
- 21. And you canrun CFML Like What?
- 22. ● NOOBS ● RaspbianLinux (Debian) ○ Gnome Desktop (Pi Store) ○ Bash (apt-get) ● Oracle Java 1.8 (ARM) ● SSH Environment
- 23. ● PuTTY ● IPAddress?? (Router, Nmap) ● CommandBox 2.0.0 beta ○ REPL ○ ForgeBox ○ Embedded Server Tools
- 24. /etc/apt/sources.list.d/box.list $> apt-get installcommandbox /usr/bin/box $> box version Install CommandBox
- 25.
- 26. myScript #! /usr/bin/env box <cfoutput>#now()#</cfoutput> $>chmod a+x myScript $> ./myScript Run CFML!
- 27. $> box CommandBox> installcontentbox CommandBox> start --rewritesEnabled In-memory H2 DB Install ContentBox
- 28.
- 29. #!/bin/sh # Get currentCPU 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 currentsystem 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
- 32.
- 33. Rate Limiter installed Postedto 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 1015 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 doesthis baby go? 1000 request per second!
- 37.
- 38. GPIO (General Purpose InputOutput) ● 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 InputOutput)
- 40. GPIO (General Purpose InputOutput) ● Cobbler (breakout) board ● Solderless Breadboard ● Red LED ● 330 Ohm resistor ● Hook in series between digital pin and ground
- 41. Pi4J ● Java-based libraryfor interacting with GPIO pins ● Wraps “native” JNI calls to C library ● Easy to use from CFML! Yum!!
- 42. Pi4J $> curl -sget.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) Matrixhas you 64 LEDs (8x8)
- 46. The (LED) Matrixhas you Only 16 pins!
- 47. The (LED) Matrixhas you
- 48. The (LED) Matrixhas you --Multiplexing-- Only one column can be lit at a time.
- 49. The (LED) Matrixhas you Inline 330 Ohm resistor on each row Each column switched to ground via NPN transistor
- 50. The (LED) Matrixhas you CFML Redraw each column > 60 times a second
- 51. The (LED) Matrixhas you
- 52. Shift Your Focus ShiftRegister
- 53. Shift Your Focus SIPO-- Serial In, Parallel Out
- 54. Shift Your Focus 10 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 5input 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
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- 59. Wired To TheBrim
- 60. Wired To TheBrim
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- 63. Is that baconI smell?
- 64. Is that baconI smell?
- 65. What’s Next? ● Interactiveprojects (control from web) ● Clustered Pis (CFML, Couchbase, etc) ● Home Automation ● CFGPIO library ● What will you build?