Circonus On The Raspberry Pi

Circonus On The Raspberry Pi

There are a lot of interesting monitoring tasks, that can facilitated with a Raspberry Pi (e.g. here, there). Circonus does not officially support “Raspbian Linux on armv6/v7” as a deployment target, but given the steady interest in this topic, we took the...
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...
Show Me the Data

Show Me the Data

Avoid spike erosion with Percentile – and Histogram – Aggregation It has become common wisdom that the lossy process of averaging measurements leads to all kinds of problems when measuring performance of services (see Schlossnagle2015,  Ugurlu2013,...