Antonio's blog

Talk about Jenkins Pipeline in Seville JAM

2016-01-30T13:32:24+01:00

I was talking about Jenkins Pipeline in the Seville JAM (Jenkins Area Meetup). Thanks to everyone that attended the meeting and feel free to ping me in twitter if want to ask something! These are the slides.

Unix processes memory usage

2014-07-14T13:36:58+02:00

I’m not a sys admin, but sometimes I need to profile applications in development or production environments. When this happens I realize that I don’t remember those large -very large- commands using awk and prints everywhere.

Today was one of that days, so I decided to write this post as a reference for myself.

Total memory usage:

$> ps aux |  awk '{print $6/1024}' | awk '{sum += $1}; END {print sum " MB"}'

Total memory usage by process, for example Apache:

$> ps aux | grep apache2 | awk '{print $6/1024}' | awk '{sum += $1}; END {print sum " MB"}'

Average memory used by a process (if it uses childs):

$> ps aux | grep apache2 | awk '{print $6/1024;}' | awk '{avg += ($1 - avg) / NR;} END {print avg " MB";}'

All of them use process’s resident memory (not virtual memory).

That’s all.

Talking about ExtJS in SevillaJS meetup

2014-03-14T19:19:17+01:00

I was talking about ExtJS in the SevillaJS meetup yesterday.

The talk was not really a talk but a 2 hours live coding session. I used this slides as an introduction to the coding. They are not self-contained, but I put them here only for the last slide… I love it :–)

After 15 minutes with the slides I started to code an ExtJS app from scratch:

Create the basic project layout using Sencha CMD.
Add a view component with two buttons.
Apply hbox layout.
Add a controller to manage the click event in one of the buttons.
Add a grid to load a JSON from server (people.json).
Add a Person model.
Add a People store.
And finally add a more complex action to reload the grid on click the sencond button.

In the last 20 minutes I showed how we are using ExtJS at ClinkerHQ, on Clinker Desktop to be precise.

The code I wrote during the session is in GitHub, if you want to take a look. It’s not runnable as is, you’ll have to copy the ExtJS distribution to a directory named “ext” in order to get it running. It’s a very simple example, but it could be useful for someone who is starting with ExtJS.