Deconstructing disk performance rules: final thoughts

To summarize the discussion so far: While my experience with rule-based approaches to computer performance leads me to be very skeptical of their ultimate value, I recognize they can be useful under many circumstances, especially if people understand their inherent limitations. For example, in the last couple of blog entries,… Continue reading

More on Performance Rules: Context is King

As discussed in the last blog entry, unfortunately, an automated, rules-based, expert systems approach to diagnosing performance-related problems turns out to be too brittle to be very effective. The simple threshold-based rules invoked by various authorities often need to be fleshed out with additional conditions and exceptions. Once the rule… Continue reading