The Unix KISS: A Case Study

In this paper we show that the initial philosophy used in designing and developing UNIX in early times has been forgotten due to “fast practices”. We question the leitmotif that microkernels, though being by design adherent to the KISS principle, have a number of context switches higher than their monolithic counterparts, running a test suite and verify the results with standard statistical validation tests. We advocate a wiser distribution of shared libraries by statistically analyzing the weight of each shared object in a typical UNIX system, showing that the majority of shared libraries exist in a common space for no real evidence of need. Finally we examine the UNIX heritage with an historical point of view, noticing how habits swiftly replaced the intents of the original authors, moving the focus from the earliest purpose of is avoiding complications, keeping a system simple to use and maintain. KEYWORDS UNIX; Statistics; Case Studies; Operating Systems.

• Type: Journal
• Year: 2007
• Where: CORR
• Authors: Franco Milicchio
• Keywords: CORR 2007, Education, Shared Libraries, Statistical Validation Tests, UNIX