July 17, 2002
Priority inheritance: The real story
Anonymous Reader writes: "In this guest editorial at LinuxDevices.com, TimeSys VP of Technology Doug Locke offers a rebuttal to Victor Yodaiken's recent whitepaper on what's wrong with using a technique called 'priority inheritance' to avoid a problem in real-time systems known as 'priority inversion'. (Priority inversion, you may recall is what caused big problems for the Mars Pathfinder Rover.) Locke argues that, while many of the technical arguments in the Yodaiken paper are generally correct, the conclusions he draws are badly flawed. It's like saying that 'because some carpenters might unsafely use a screwdriver to drive nails, screwdrivers should never be used,' argues Locke."