Monthly Archives: April 2009

Mainframe Modernization And Migration Considerations

So… you have a mainframe application and you want to modernize it or migrate it to a distributed systems architecture… congratulations. Here are some things you may want to consider before making the foolish move of comparing MIPS to SPECint … Continue reading →

Posted in AIX, DB2, J2EE, Java, Legacy, Linux, Mainframe, Oracle, Sizing, UNIX | Tagged , | Comments Off

Is my server’s run queue too deep? Is it saturated?

***This post refers to time sharing operating systems, specifically UNIX or UNIX-Like operating systems – but is relevant for other operating systems and basic kernel scheduling concepts as well. This is also a fairly gross over-simplification of the many pieces … Continue reading →

Posted in AIX, Linux, Models, Sizing, Solaris, Tuning, UNIX, VMWare | Tagged | 3 Comments