February 01, 2011
Mark Wielaard: New GPG key.
Finally created a new GPG key using gnupg. The old one was a DSA/1024 bits one and 8 years old. The new one is a RSA/2048 bits one. I will use the new one in the future to sign any release tarballs I might create. pub 2048R/57816A6A 2011-01-29 Key f...
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February 01, 2011
Andrew Hughes: [SECURITY] IcedTea6 1.7.8, 1.8.5, 1.9.5 Released!.
We are pleased to announce a new set of security releases, IcedTea6 1.7.8, IcedTea6 1.8.5 and IcedTea6 1.9.5.
This update contains the following security updates:
The IcedTea project provides a harness to build the source code from OpenJDK6 u...
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Real-time Linux in real time.
I don't have the time I used to for reading stacks of magazines and journals. However, thanks to the UCLA kitchen magazine pile, I happened to pick up an issue of the IBM Systems Journal, Real-Time and Event-Based Systems, Volume 47, Number 2, 2008. I'd been thinking about real-time systems lately since so many production systems are still surviving on an ancient model of two non-load-balanced, manual failover application servers. A recent race to bring a standby server up-to-date with code from the primary server in time for a forced failover brought me to my wit's end with this outdated architecture.
Now this all may be a bit deceiving. Real-time isn't necessarily a guarantee of persistent service from an architecture standpoint. A server is a server, real-time or not, and requires redundancy planned for it. But as I read an article in the journal by D. Hart, J. Stultz, and T. Ts’o, "Real-time Linux in real time", some ideas started to percolate regarding my Java application servers and the problem of persistent service. Not only did it discuss real-time Linux, a topic close to my heart, but the latest IBM offering, WebSphere Real Time (WRT), a real-time Java virtual machine (JVM) utilizing Metronome, a real-time garbage collector created by the IBM Research Division.
If I had my way, all my servers would be enterprise real-time OS-based application servers. I do run WebSphere, but would there b...
Date: March, 10 2010
Url: http://www.java.net/blog/christianabryant/archive/2010/03/10/real-time-linux-real-time
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