The Blog. From Circonus

System Monitoring with the USE Dashboard

System Monitoring with the USE Dashboard

The USE method was developed by Brendan Gregg to study performance problems in a systematic way.1 It provides a simple, top-down approach to identify bottlenecks quickly and reliably. The gathering of performance metrics is usually done using a myriad of different...

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...

Video: Math in Big Systems

Every year the esteemed Usenix organization holds their LISA conference. LISA has transformed slowly over the years as systems, architectures, and the nature of large-scale deployments have changed, but this year represented the largest change to date. "The format of...

Alerting on disk space the right way.

Most people that alert on disk space use an arbitrary threshold, such as "notify me when my disk is 85% full." Most people then get alerted, spend an hour trying to delete things, and update their rule to "notify me when my disk is 86% full." Sounds dumb, right? I've...

A New Day for Navigation and Search

Today we finally rolled out the new navigation menu and search bar that we've been working on for a while. We had been getting feedback on the poor usability of the old horizontal menu system and knew that a "pain point" had been reached—it was time to revisit how we...

Blueprints – Graphing made easy

Introducing Blueprints Today I’d like to introduce a new Circonus feature we’re calling Blueprints. Blueprints is a way to effortlessly create reusable graphs that can be used to visualize any host where the data you’re collecting is similar. In the modern age of...

AWS Cloudwatch Support

This month we pushed native Cloudwatch support - any metric that you have in Cloudwatch can now be added to graphs and dashboards, and alerts can be created for them. Auto Scaling (AWS/AutoScaling) AWS Billing (AWS/Billing) Amazon DynamoDB (AWS/DynamoDB) Amazon...