I recently discover Aptly which permit to manage local Debian repositories. I waited this kind of tools during several years and now I’m really happy.
It is able to manage several repositories, making snapshots, merging snapshots, diff between 2 snapshots, filtering packages to avoid downloading unwanted ones….
This is perfect when you want to test before upgrading a critical infrastructure.
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.
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.
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 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.
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:
I recently been faced on a classical problem on InnoDB which is the fragmentation, but on Galera. InnoDB engine doesn’t defragment on the fly and requires optimize maintenance sometimes to free disk space. But on Galera, which is a fault tolerance and high availability solution, it’s a problem having tables locked by an optimize procedure. Until Galera doesn’t support TokuDB and only fully support InnoDB, we had (with a colleague (Kevin aka Vinek)) to find a solution.
