The CenterDevice Cloud Architecture Revisited
About 2 years ago, I introduced you to the architecture of CenterDevice, and it is now time for an update.... Read more
Posts about Performance
Video: Is My Profiler Telling The Truth?
My talk about profilers and their inner workings from JavaOne is now viewable for free in its entire length on... Read more
Does My Profiler Tell The Truth? #javaone
On Monday 29th at the JavaOne conference I was proudly presenting my talk about profilers and how they work for... Read more
An OpenStack Crime Story solved by tcpdump, sysdig, and iostat – Episode 3
09/17/14
Previously on OpenStack Crime Investigation … Two load balancers running as virtual machine in our OpenStack based cloud, sharing a keepalived based... Read more
An OpenStack Crime Story solved by tcpdump, sysdig, and iostat – Episode 2
09/16/14
Previously on OpenStack Crime Investigation. I was called to a crime scene; our OpenStack based private cloud for CenterDevice. Somebody... Read more
An OpenStack Crime Story solved by tcpdump, sysdig, and iostat – Episode 1
09/15/14
This is the story of how the tiniest things can sometimes be the biggest culprits. Because first and foremost, this... Read more
String Deduplication – A new feature in Java 8 Update 20
Strings consume a lot of memory in any application. Especially the char[] containing the individual UTF-16 characters is contributing to... Read more
20% time interviews – Allocation Tracker
08/07/14
A few weeks ago, I started a project called “PYP – Promote Your Project”. Its about how the employees at... Read more
Fixing Garbage Collection Issues Easily
What do you do when your Garbage Collection runs all the time? Well usually you would try to introduce some... Read more