Jun 29

Generally investing JVM states is easier since Oracle provide the tools inside the JDK (jstack, jstat, jconsole,…) but what to do when a process hangs for no reason?
Continue reading “Investigate process state and memory in Linux” »

Jul 27

Often you need to add new services to your redhat clusters and unfortunately you don’t have a ready to use OCF resource agent eg:Jboss.

The redhat docs are not useful (forget about docs.redhat.com, forever) so i had to discover the way by myself; here the results.
Continue reading “Creating custom service for redhat cluster” »

Dec 19

How to speed-up your DD (DataDump) for file creation.
Continue reading “How to create a large file quickly” »