Revealing Hidden Latency Patterns

Latency Heat Map Response time – or latency – is crucial to understand in detail, but many of the common presentations of this data hide important details and patterns. Latency heat maps are an effective way to reveal these. I often use tools that provide heat maps directly, but sometimes I have separate trace output [...]

Posted on May 19, 2013 at 2:56 pm by Brendan Gregg · Permalink · One Comment
In: Performance · Tagged with: , , ,

USENIX LISA 2010: Visualizations for Performance Analysis

My USENIX LISA talk from 2010 is now available on youtube, also embedded below. The title is Visualizations for Performance Analysis (and more), and showed how the full distribution of data could be presented as a heat map. This is especially useful for latency analysis, as fast-path and slow-path differences can be studied, as well [...]

Posted on December 10, 2012 at 9:36 am by Brendan Gregg · Permalink · Comments Closed
In: Performance · Tagged with: , , ,

dtrace.conf 2012 videos

Last month was dtrace.conf 2012, the 2nd DTrace unconference. This is a meetup of DTrace practitioners and developers, where we discuss the latest uses, developments and future directions of the technology. It was great to see old friends of DTrace, and to put new faces to names. See the video list for the sessions, which, [...]

Posted on May 8, 2012 at 4:06 pm by Brendan Gregg · Permalink · Comments Closed
In: DTrace · Tagged with: , ,