Coursera: freely learn new stuff from High School

10 October 2014 in Developement, Hi-Tech, Others, Private life

One of my ex-boss talked to me about Coursera a year ago. It’s a website where you can freely learn several things from high graduated school. Most ofter, it’s technology related and I wanted to test it to learn Java. I subscribed to 2 sessions. One for the java basics and the other one for the object oriented aspect (in french). I’ve started it a few weeks ago the first part and what I can say is, it’s very good.

Galera Innoptimizer: now support tables’ partition

8 October 2014 in Databases, Developement, Hi-Tech, SQL

You may remember the first introduction of that tool here. I’ve made changes to support tables’ partition, to avoid a big lock on huge tables. The solution is to rebuild every partition one by one instead of rebuilding the whole table. This is smoother and less stressing Galera. I hope you’ll enjoy this new version (v0.2). Note: I still got issues on MariaDB 10 with such thing, I’m working on it.

FIO: Bench IO disks

6 October 2014 in Ceph, Debian, Hi-Tech, Linux, Red Hat

The first thing you generally want to do when you have any new Storage system like SSD, Disk arrays or a Cluster Ceph, is benching. You will want to know how can read and write throughput. FIO is able to do that for you, here is an example: [global] ioengine=libaio invalidate=1 ramp_time=5 direct=1 size=5G runtime=300 time_based directory=/home [seq-read] rw=read bs=64K stonewall [rand-read] rw=randread bs=4K stonewall [seq-write] rw=write bs=64K stonewall [rand-write] rw=randwrite bs=4K stonewall You then will have a good output of everything you need to know.

Cyanogen: finally available on Samsung Galaxy S5 EU

4 October 2014 in Android, Hi-Tech

Cyanogen is finally available on Sumsung Galaxy S5 Europe (klte) :-). Thanks Cyanogen Team! For the moment, you can only grab nighly builds but everything is working fine on it. Regarding the difference with the Samsung ROM, I noticed the battery life time is a little bit reduced (up to 15% depending on your usage). Camera is working fine, calls, screen etc… are ok too. I only have minor bugs that I don’t really care in fact.

Sphinxdoc and ReadTheDocs theme tricks

2 October 2014 in Developement, Hi-Tech, Web

I’ll talk about things that may frustrate you with Sphinxdoc and ReadTheDocs. ReadTheDocs has a beautiful theme and you certainly want to use it with Sphinxdoc. However the size of the main text may be too small for you. Or you noticed that when you try to generate a version locally you’ll see it works like a charm but when it’s compiled on Readthedocs, it will fail. Here is a solution on how to make it work both locally and on Readthedocs:

Sphinxdoc: easily make a documentation

22 September 2014 in Developement, Hi-Tech

I already heard of Sphinxdoc a year ago and see some of my colleges are using it for professional or personal usages. With my friend Sebastien Tardif (Teka101), we decided to rebuild a complete documentation for MySecureShell in a more fashion way as the old doculentation starts looking ugly. Even if it’s more an oriented Python solution, it can be used for any other kind of project and we decided to use SphinxDoc to make a newer documentation.

Hadoop meetup on monday in Paris

20 September 2014 in Databases, Events, Hi-Tech

Next Monday will take place a Hadoop meetup. I already heard of it but didn’t tested it yet. This meetup can help you more on what it is and technique usages. If you want to know more about this meetup, please follow the link.