2010-05-31

Tweets of the month

"I'm gonna fight to get it back again!" - Sometimes something small can be enormous. Such are the mysteries of the human heart. segunda-feira, 31 de Maio de 2010 16:49:52

Happy to see Lady Doctor Bug back in business! :-) sábado, 29 de Maio de 2010 12:36:59

Revising data analysis scripts quinta-feira, 27 de Maio de 2010 10:52:08

@mpanao Força! quinta-feira, 27 de Maio de 2010 10:51:41 in reply to mpanao

How to stop multitasking http://blogs.hbr.org/bregman/2010/05/how-and-why-to-stop-multitaski.html quarta-feira, 26 de Maio de 2010 13:37:17

Very good ssh software, free for non-commercial use: http://www.bitvise.com/winsshd segunda-feira, 24 de Maio de 2010 09:36:18

Just played with Joana... Nice! Now, back to work! sexta-feira, 21 de Maio de 2010 20:07:10

Today you can play Pacman on Google! Even better, if you insert 2 "coins" you can also play with Ms. Pacman sexta-feira, 21 de Maio de 2010 20:00:44

Back to the paper, with new tools at hand quinta-feira, 20 de Maio de 2010 16:19:07

GNU Plotting quarta-feira, 19 de Maio de 2010 15:25:51

Computing statistics for test runs using Apache Commons Math segunda-feira, 17 de Maio de 2010 14:07:35

Sticking to the facts to clear a writer's block. Indeed "the truth will set you free". terça-feira, 4 de Maio de 2010 13:26:17

# PauloGaspar7 Who owes who in Europe: RT @JMF1957: Quem deve dinheiro a quem: um interessante gráfico do New York Times: http://is.gd/bRUWk segunda-feira, 3 de Maio de 2010 10:49:00 via TweetDeck Retweeted by you and 1 other

Working in Taguspark segunda-feira, 3 de Maio de 2010 10:35:32

2010-05-19

GNU Plotting

gnuplot homepage


On advice from several friends, I've decided to learn gnuplot to produce graphics for my work.

Demos

Windows installation:

1 - Download Windows package (e.g. gp440win32.zip)

2 - Unzip to a folder (e.g. C:\Program Files\gnuplot)

3 - Define environment variables:
3.1 - (optional) GNUPLOT_HOME = C:\Program Files\gnuplot
Add %GNUPLOT_HOME%\binary to your PATH environment variable
3.2 - GNUPLOT_LIB=
3.3 - (fonts for PNG output) GDFONTPATH=%windir%\FONTS
3.3 - (fonts for PNG output) GNUPLOT_FONTPATH=%windir%\FONTS

4 - Open a new console window and type gnuplot.exe or wgnuplot.exe.

(see README.Windows for more information)

2010-05-07

Reasons for bad performance in distributed systems

Another great figure from DynaTrace, this time by Alois Reitbauer. It summarizes the possible reasons for bad performance in distributed applications.

2010-05-06

Reasons for bad performance

The following figure by Andreas Grabner from DynaTrace is an excellent summary of the possible reasons for bad performance in computer programs.