for 1’000’000 lines

    “line” is empty

    for 150 chars

        add char “c” to the “line”

    print out the “line”

Running the script and pipe the output to a file creates a 145MB file. And the most interesting result is the time each script took to run:

Shell$ time python createRandomFile.py --rows 1000000 --chars 150 > bigfile.py.txt
real	0m56.207s
user	0m55.348s
sys	0m0.607s

Shell$ time perl createRandomFile.pl -r 1000000 -c 150 > bigfile.pl.txt
real	0m37.742s
user	0m37.147s
sys	0m0.488s

Shell$ time php createRandomFile.php -r 1000000 -c 150 > bigfile.php.txt
real	1m9.357s
user	1m5.165s
sys	0m3.542s

Shell$ time java createRandomFile 1000000 150 > bigfile.java.txt
real	1m18.791s
user	1m0.689s
sys	0m11.133s

Shell$ time ruby createRandomFile.rb -r 1000000 -c 150 > bigfile.ruby.txt
real	1m44.118s
user	1m39.672s
sys	0m0.967s

Shell$ time ruby createRandomFile.sh 1000000 150 > bigfile.bash.txt
real	78m46.334s
user	56m30.018s
sys	3m5.280s

Shell$ time ./createRandmonFile -r 1000000 -c 150 > bigfile.c.txt
real	0m2.159s
user	0m1.339s
sys	0m0.425s

For me personally there are some unexpected new experiences:

1. Python takes “much” longer than perl. After performance optimizing the Python script its much faster, but still slower than the perl script. Thats really sad…
2. Not a big surprise is the fact, that the C program is the fastest. But that it is so much faster than all others is impressive.
3. Using echo instead print in the php script gets the script one second faster.
4. And the fact, java is one of the most slowest language of all competitors used here.
5. Ruby is damn slow
6. Finally, Bash IS the slowest… Damn slow! I mean, SLOOOWWW!!!

This are really interesting results!

That was the reason for me to rent some virtual machines by rackspacecloud.com. Seriously, rackspacecloud is impressive! But keeping two or more vm’s up and running for more than a month is a really expensive playground! Moving to Amazon’s EC2 wasn’t an option too. So i decided to buy a extreme low-end cheap virutalisation capable server. After some research (Hardware should be compatible with ESXi in case of whatever) i’ve build the following server for me:

Case: Asus Vintage V8-P8H67E, Intel H67, Socket 1155, USB 3.0 (about 170$)

CPU: Intel Core i5 2500 BOX, 3.3GHz, LGA 1155, 4C/4T (about 200$)

RAM: Kingston ValueRAM, 3×4 GB, DDR3-1333, CL9 (about 60$)

Raid (optional): Adaptec RAID 2405, 4-Channel SAS/SATA, low profile (about 200$)

Additional Network: Intel PWLA8391GTBLK Pro 1000GT Gigabit Adapter PCI, Bulk (about 30$)

VLAN Gigabit Switch: HP ProCurve Switch V1810G-8 8 Port 10/100/1000 Mbps, SFP (about 110$)

Harddisk: got some at home

The Result is a Box with 100% Virtualisation Support (vPro, VT-x, VT-d, 64bit), 12GB RAM and small in form and silent too.

In the past i’ve landed several times on openstack.org during some research in automating virtualisation infrastructures. Openstack is a framework for building private clouds. Openstack promises an virtualisation ecosystem with all needed components to build a perfect world. The project looks very mature and there are a lot of partners supporting them. Openstack supports also a wide range of Hypervisors though they’r strongly recommending to use KVM for virtualistion. I will give the project a try…

~/Library/Preferences/com.apple.security.revocation.plist

Thats all…

Since i’ve updated to 10.7 i’m faced with several bugs! Huge Bugs, which prevent me from working productive!

Use the follwing Settings to set up the Beacon

You just have to replace the proxy settings with your own IP and Hostname.

Next i gonna to do is to figure out the settings for turning on HomeSharing over VPN.

Immer wie mehr kaufe ich Bücher, bis jetzt jedoch nur technische, im eBook Format. Ich hab das Buch auf all meinen mobilen Geräten immer dabei, kann nach Stichworten suchen und natürlich auch Abschnitte markieren und kommentieren. Ich bin überzeugt, dass sich mein Bücherregel immer wie mehr vernachlässigt vorkommen wird. Einzig, das Ding mit den Lesezeichen hab ich noch nicht so ganz begriffen ;)

Apple hat es leider bis jetzt noch nicht hingekriegt mit dem iBook Store in der Schweiz. Aus diesem Grund schneiden sich meine Finger am virtuellen Papier aus Büchern aus Amazons Kindle Store. Apple wird es nicht leicht haben, wenn sie irgendwann doch noch mit dem iBook Store kommen, da sich Bücher aus dem Kindle Store wohl nicht transferieren lassen werden.

Ein paar Stunden Arbeit, und ein kleines aber feines WordPress Plugin ist geschrieben. Über eine zentrale Datenbank können Geschenke vom Brautpaar erfasst werden und die Gäste können sich bequem an Geschenken beteiligen. Sobald ich Zeit finde, werde ich die letzen Kanten und rauen Seiten des Plugins noch bearbeiten und zu wordpress.org als offizielles Plugin hochladen.

Hier ist das Plugin in Action.

This steps are done with the actual 3.1.3 Release of WordPress

1. Add the following Settings to your wp-config.php and be sure you’ve removed all other entries beginning with: FTP_* and FS_*

define('FTP_BASE', '/home/path/to/your/site');
define('FTP_CONTENT_DIR', '/home/path/to/your/site/wp-content/');
define('FTP_PLUGIN_DIR', '/home/path/to/your/site/wp-content/plugins/');
define('FS_METHOD', 'direct');

2. Comment out line 138 to 141 in /wp-admin/includes/class-wp-upgrader.php

 if ( !empty($upgrade_files) ) {
     foreach ( $upgrade_files as $file )
          $wp_filesystem->delete($upgrade_folder . $file['name'], true);
}

To This:

/*if ( !empty($upgrade_files) ) {
     foreach ( $upgrade_files as $file )
          $wp_filesystem->delete($upgrade_folder . $file['name'], true);
}*/

3. Add the following line after line 144

$working_dir .= "dirtyhack";

This should finally look like this:

//We need a working directory
$working_dir = $upgrade_folder . basename($package, '.zip');
$working_dir .= "dirtyhack";

Yes, this really a DIRTY HACK… If you know a better way, let me know… It works for me.

If you upgrade WordPress-Core automatically all this changes are lost!

• Be carful if you have defined any mandatory additional fields for your Issues
• If you set unknown_user=create be sure the newly created user has access to the project automatically. If he has no access, the issue will not be created
• If you just want to pipe Mails into a Redmine project use unknown_user=accept and o_permission_check=1 and issues are getting created with the anonymous User. Works well for a simple “one-way” posting

Finally i’ve created a small bash script to run the import process all 5 minutes:

SERVER=host.domain.tld
USER=jbauer
PASS=ILike24
 
rake -f /path/to/your/Redmine/installation/Rakefile redmine:email:receive_imap RAILS_ENV="production" \
host="$SERVER" \
username="$USER" \
password="$PASS" \
move_on_success=read \
project=sandbox \
allow_override=project,tracker,category,priority,status \
unknown_user=accept \
no_permission_check=1 \
status=New \
tracker=Bug \
priority=Low
exit $?

For mor detailed information visit the Redmine Wiki.

1. Create a connection specific freetds.conf configuration file in the location where your other PHP files are:

[mssqlserver]
	host = 1.2.3.4
	port = 1433
	tds version = 8.0 // MSSQL 2008
	#tds version = 4.2 // older MSSQL Servers

2. You can use this connection information from your PHP script:

// Older FreeTDS installations need the FREETDSCONF Environment variable
putenv('FREETDSCONF=/path/to/freetds.conf');
// Current release of FreeTDS uses the FREETDS environment variable. So we set both to be sure
putenv('FREETDS=/path/to/freetds.conf');
$mssql = mssql_connect('mssqlserver' , 'user', 'password');
mssql_select_db('myDb',$mssql);

Be careful editing the file. Do not use tabs, just spaces!

Just put the following in config/email.yml

production:
  delivery_method: :smtp
  smtp_settings:
    tls: true
    address: "smtp.gmail.com"
    port: 587
    domain: "domain.tld"
    authentication: :plain
    user_name: "MyEmailAddress@domain.tld"
    password: "ThisIs$ecret"
    enable_starttls_auto: true