juno

# Custom log formatter module for rails_12factor
#
module CustomLogFormatter
  # Custom formatter for development environment.
  #
  # Examples
  #
  #   # in controller
  #   logger.error(self.class) { 'This is a error message' }
  #   logger.info { 'This is a info message' }

mdwheele

1. Run the following in your terminal.

defaults write com.apple.BluetoothAudioAgent "Apple Bitpool Max (editable)" 80
defaults write com.apple.BluetoothAudioAgent "Apple Bitpool Min (editable)" 80
defaults write com.apple.BluetoothAudioAgent "Apple Initial Bitpool (editable)" 80
defaults write com.apple.BluetoothAudioAgent "Apple Initial Bitpool Min (editable)" 80
defaults write com.apple.BluetoothAudioAgent "Negotiated Bitpool" 80
defaults write com.apple.BluetoothAudioAgent "Negotiated Bitpool Max" 80
defaults write com.apple.BluetoothAudioAgent "Negotiated Bitpool Min" 80

willurd

Each of these commands will run an ad hoc http static server in your current (or specified) directory, available at http://localhost:8000. Use this power wisely.

Discussion on reddit.

Python 2.x

$ python -m SimpleHTTPServer 8000

ruckus

** Find commmonly accessed tables and their use of indexes:

SELECT relname,seq_tup_read,idx_tup_fetch,cast(idx_tup_fetch AS numeric) / (idx_tup_fetch + seq_tup_read) AS idx_tup_pct FROM pg_stat_user_tables WHERE (idx_tup_fetch + seq_tup_read)>0 ORDER BY idx_tup_pct;

Returns output like:

       relname        | seq_tup_read | idx_tup_fetch |      idx_tup_pct       
----------------------+--------------+---------------+------------------------
 schema_migrations    |          817 |             0 | 0.00000000000000000000
 user_device_photos   |          349 |             0 | 0.00000000000000000000

robzolkos

Patched ruby 1.9.3-p194 for 30% faster rails boot

What is?

This script installs a patched version of ruby 1.9.3-p194 with patches for boot-time performance improvements (#66 and #68), and runtime performance improvements (#83 and #84). It also includes the new backported GC from ruby-trunk.

Huge thanks to funny-falcon for the performance patches.

• http://github.com/ruby/ruby/pull/66
• http://github.com/ruby/ruby/pull/68

dplummer

diff -urB a/distro/google-perftools-1.7/src/tcmalloc.cc b/distro/google-perftools-1.7/src/tcmalloc.cc
--- a/distro/google-perftools-1.7/src/tcmalloc.cc
+++ b/distro/google-perftools-1.7/src/tcmalloc.cc
@@ -137,6 +137,13 @@
 # define WIN32_DO_PATCHING 1
 #endif
 
+// GLibc 2.14+ requires the hook functions be declared volatile, based on the value of the
+// define __MALLOC_HOOK_VOLATILE. For compatibility with older/non-GLibc implementations,
+// provide an empty definition.

dplummer

glibc 2.14 breaks the install process for ruby 1.8.7 and ree 1.8.7.

Fix for ruby 1.8.7 install with rvm:
1. Run `rvm install ruby-1.8.7-p334`
2. Wait for it to fail.
3. Fix the broken files with:
cd ~/.rvm/src/ree-1.8.7-2011.03/source/ext/dl
rm callback.func
touch callback.func
ruby mkcallback.rb >> callback.func

gmonfort

# Debian 6 bootstrap template file for chef
#
# Installs RVM and ruby enterprise edition (ree) patched to workaround 
# issues with SSLv2 in debian systems (SSLv2 is deprecated)
#
# Also only installs ruby dependencies listed in `rvm notes`
# 
# RVM is installed system-wide in /usr/local/rvm
#
# Usage: