Tuning AWS EC2 instances with CloudWatch metric analysis
What happens when cloud-based application infrastructure slows down? Twelve years ago, I attended a meetup at the San Francisco Perl Mongers group where an engineer from Amazon introduced the Elastic…
Which block I/O scheduler is the best? We asked eBPF
Putting Linux kernel block I/O schedulers under the eBPF microscope eBPF tracing is a broad and deep subject, and can be a bit daunting at first sight. However, when Brendan…
Faultd Update – Next Generation Alerting
Circonus will soon be releasing our next generation fault detection system, faultd (fault-dee). Faultd is an internal component of our infrastructure has run alongside our existing fault detection system for…
How Safe is Your Home’s Air? The Internet of Things and Air Quality Monitoring during Wildfires
IoT-driven monitoring of Air Quality during the 2018 California Wildfires Over the past few weeks, the Camp Fire in Northern California and the Woolsey Fire in Southern California have devastated…
Introducing Circonus Stream Tags
Gain greater insight into system behavior in aggregate, across multiple dimensions. A “metric” is a measurement, or value, representing the operational state of your system at a given time. For…
The Problem with Percentiles – Aggregation brings Aggravation
Percentiles have become one of the primary service level indicators to represent real systems monitoring performance. When used correctly, they provide a robust metric that can be used for base-of-mission…
