Archive for the ‘methodology’ Category

The TSA Method

TSA Method in class (SmartOS) There are two basic performance analysis methodologies you can use for most performance issues. The first is the resource-oriented USE Method, which provides a checklist for identifying common bottlenecks and errors. The second is the thread-oriented TSA Method, for identifying issues causing poor thread performance. I summarized the TSA Method [...]

Posted on October 11, 2013 at 12:20 pm by Brendan Gregg · Permalink · Comments Closed
In: methodology, performance, smartos, tsamethod

Systems Performance: Enterprise and the Cloud

Systems performance analysis is an important skill for all computer users, whether you’re trying to understand why your laptop is slow, or optimizing the performance of a large-scale production environment. It is the study of both operating system (kernel) and application performance, but can also lead to more specialized performance topics, for specific languages or [...]

Posted on June 21, 2013 at 2:44 pm by Brendan Gregg · Permalink · Comments Closed
In: book, Cloud, enterprise, illumos, Linux, methodology, performance, smartos

USENIX LISA 2012: Performance Analysis Methodology

At USENIX LISA 2012, I gave a talk titled Performance Analysis Methodology. This covered ten performance analysis anti-methodologies and methodologies, including the USE Method. I wrote about these in the ACMQ article Thinking Methodically about Performance, which is worth reading for more detail. I’ve also posted USE Method-derived checklists for Solaris- and Linux-based systems. The [...]

Posted on December 13, 2012 at 3:51 pm by Brendan Gregg · Permalink · Comments Closed
In: methodology, performance, slides, talk, usemethod

The USE Method

A serious performance issue arises, and you suspect it’s caused by the server. What do you check first? Back when I was teaching operating system performance, I wanted a methodology my students could follow to find common issues quickly, without overlooking important areas. Like an emergency checklist in a flight manual, it would be something [...]

Posted on February 29, 2012 at 10:32 am by Brendan Gregg · Permalink · Comments Closed
In: methodology, performance, usemethod