The Blog. From Circonus

Monitoring Queue Sizes

Monitoring Queue Sizes

At Circonus we are collecting a number of metric about block devices. An interesting one is the average length of the request queue, which is exposed by iostat[1]: aqu-sz The average queue length of the requests that were issued to the device. Note: In previous...

Hosts, Metrics, and Pricing, Oh My!

As the number and types of monitoring vendors have risen over the past several years, so have the pricing models. With the rise of cloud based ephemeral systems, often running alongside statically provisioned infrastructure, understanding the monitoring needs of one’s...

Monitoring as Code

Circonus has always been API-driven, and this has always been one of our product’s core strengths. Via our API, Circonus provides the ability to create anything that you can in the UI and more. With so many of our customers moving to API-driven platforms like AWS,...

Understanding Data with Histograms

For the last several years, I've been speaking about the lies that graphs tell us. We all spend time looking at data, commonly through line graphs, that actually show us averages. A great example of this is showing average response times for API requests. The above...

Web Portal Outage

Last night circonus.com became unavailable for 34 minutes, this was due to the primary database server becoming unavailable. Here is a breakdown of events, times are US/Eastern. 8:23 pm kernel panic on primary DB machine, system rebooted but did not start up properly...

Graph Annotations and Events

This feature has been a long time in coming: the ability to annotate your graphs! With the new annotations timeline sitting over the graph, not only can you create custom events to mark points in time, but you can also view alerts and see how they fit (or don't fit)...

Insights from a Data Center Conference

At the beginning of this month, I'd attended the Gartner Data Center Conference in Las Vegas, and wanted to share with you some of my gained impressions and insights from the event. First, I have to say that I have seldom seen a group of more conscientious conference...