wolfeidau

2012-10-24 19:58:44 POST //notify
{ host: 'localhost:8000',
  'content-type': 'application/json',
  accept: 'application/json',
  'content-length': '1858',
  connection: 'keep-alive' }
Received body data:
{
    "method": "collect",
    "params": {

wolfeidau

{
    "payload": {
        "notifier": {
            "name": "nodejsapp",
            "version": "0.0.1"
        },
        "event": {
            "message": "uncaughtException",
            "type": "Error",
            "timestamp": "Tue, 30 Oct 2012 06:34:27 GMT"

wolfeidau

<VirtualHost *:80>
  ServerName stage.moneytribe.com.au
  ServerAdmin [email protected]
  ErrorLog /var/log/httpd/stage.moneytribe.com.au_error.log
  CustomLog /var/log/httpd/stage.moneytribe.com.au_access.log combined

  DocumentRoot /var/www/html
  <Directory "/var/www/html">
    Options +FollowSymLinks Indexes

wolfeidau

trogdor:node-levelup markw$ git pull git://github.com/rvagg/node-levelup.git leveldb1.7
remote: Counting objects: 13, done.
remote: Compressing objects: 100% (2/2), done.
remote: Total 7 (delta 5), reused 7 (delta 5)
Unpacking objects: 100% (7/7), done.
From git://github.com/rvagg/node-levelup
 * branch            leveldb1.7 -> FETCH_HEAD
Updating 7b907b0..4ff9822
Fast-forward
 deps/leveldb/leveldb.gyp |    4 ++++

wolfeidau

# cat syscalltime.d 
syscall:::entry
{
  k = probefunc;
}
tick-5000hz
/k != 0/
{
    @[k] = count();
}

wolfeidau

> [email protected] install /Users/markw/Code/Javascript/node-netif
> node-gyp rebuild

  CXX(target) Release/obj.target/netif/src/netif.o
In file included from ../src/netif.cc:29:
In file included from /Users/markw/.node-gyp/0.8.14/src/node.h:61:
In file included from /Users/markw/.node-gyp/0.8.14/deps/uv/include/uv.h:61:
In file included from /Users/markw/.node-gyp/0.8.14/deps/uv/include/uv-private/uv-unix.h:27:
/Users/markw/.node-gyp/0.8.14/deps/uv/include/uv-private/ev.h:229:3: error: expected '}'
  EV_ERROR    = (-2147483647 - 1) /* sent when an error occurs */

wolfeidau

Introduction

The objective of this post is to get people up and running with SmartOS with enough development tools to do some C/C++ and NodeJS development and take advantage of some amazing tools available only on this platform.

In my case the killer app available on SmartOS is DTrace, which enables me to peak inside a running nodejs application and observe various aspects of it's operation.

Install SmartOS

In my case I normally use the VMWare version of dtrace, this can be downloaded from SmartOS Download Page.

Once downloaded this just needs to be copied to your Documents/Virtual Machines folder and launched by double clicking on the file.

wolfeidau

strace node tools/leaks.js 
execve("/usr/local/bin/node", ["node", "tools/leaks.js"], [/* 20 vars */]) = 0
brk(0)                                  = 0x1dd2000
access("/etc/ld.so.nohwcap", F_OK)      = -1 ENOENT (No such file or directory)
mmap(NULL, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff198b68000
access("/etc/ld.so.preload", R_OK)      = -1 ENOENT (No such file or directory)
open("/etc/ld.so.cache", O_RDONLY|O_CLOEXEC) = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=19450, ...}) = 0
mmap(NULL, 19450, PROT_READ, MAP_PRIVATE, 3, 0) = 0x7ff198b63000
close(3)                                = 0

wolfeidau

sudo dtrace -Z -n 'syscall::fork*: /execname == "node"/{ printf("%d %d", timestamp, pid); }' -n 'node-worker-farm*:::startChild{ trace(arg0) }'
dtrace: description 'syscall::fork*: ' matched 2 probes
dtrace: description 'node-worker-farm*:::startChild' matched 0 probes
CPU     ID                    FUNCTION:NAME
  0    135                       fork:entry 13517852979208 83369
  0    136                      fork:return 13518351020260 83369
  0  12238            startChild:startChild                 0
  0    135                       fork:entry 13518352693874 83369
  6    136                      fork:return 13518939170250 83369
  6  12238            startChild:startChild                 1

wolfeidau

trogdor:~ root# dtrace -Z -n 'worker-farm*:::*{ trace(arg0) }'
dtrace: description 'worker-farm*:::*' matched 0 probes
CPU     ID                    FUNCTION:NAME
  0  78868            startChild:startChild                 0
  0  78868            startChild:startChild                 1
  0  78868            startChild:startChild                 3
  6  78868            startChild:startChild                 2
  1  78868            startChild:startChild                 4
  2  78868            startChild:startChild                 5
  6  78868            startChild:startChild                 6