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...

Wrangling Elephants in the Cloud

Yonah Russ is a hands-on Technology Executive, System Architect, and Performance Engineer. He is founder of DonateMyFee. You can read more articles by Yonah on LinkedIn where you will also find the original version of this post. You know the elephant in the room, the...

Underneath Clean Data: Avoiding Rot

When many people talk about clean data, they are referring to data that was collected in a controlled and rigorous process where bad inputs are avoided. Dirty data has samples outside of the intended collection set or values for certain fields that may be mixed up...

Our Monitoring Tools are Lying to Us

I posted the article below to LinkedIn a few weeks back. Since it was relatively popular and relevant to the Circonus community we decided to repost to our Blog. You can find the original here. I came across this vendor blog post today extolling the virtues of...

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...