Mobile cellular network operators spend nearly a quarter of their revenue on network
management and maintenance. Incidentally, a significant proportion of that budget is spent …

In recent years, configuration errors (ie, misconfigurations) have become one of the
dominant causes of system failures, resulting in many severe service outages and …

Monitoring and troubleshooting distributed systems is notoriously difficult; potential problems
are complex, varied, and unpredictable. The monitoring and diagnosis tools commonly used …

We conducted a cloud outage study (COS) of 32 popular Internet services. We analyzed
1247 headline news and public post-mortem reports that detail 597 unplanned outages that …

Configurable software systems are prone to configuration errors, resulting in significant
losses to companies. However, diagnosing these errors is challenging due to the vast and …

Large, production quality distributed systems still fail periodically, and do so sometimes
catastrophically, where most or all users experience an outage or data loss. We present the …

Configuration problems are not only prevalent, but also severely impair the reliability of
today's system software. One fundamental reason is the ever-increasing complexity of …

Fail-slow hardware is an under-studied failure mode. We present a study of 114 reports of
fail-slow hardware incidents, collected from large-scale cluster deployments in 14 …

Troubleshooting the performance of production software is challenging. Most existing tools,
such as profiling, tracing, and logging systems, reveal what events occurred during …

In recent years, automatic program repair has been a hot research topic in the software
engineering community, and many approaches have been proposed. Although these …