Archive for the ‘zones’ Category

Virtualization Performance: Zones, KVM, Xen

At Joyent we run a high-performance public cloud based on two different virtualization technologies: Zones and KVM. We have historically run Xen as well, but have phased it out for KVM on SmartOS. My job is to make things go fast, which often means using DTrace to analyze the kernel, applications, and those virtualization technologies. [...]

Posted on January 11, 2013 at 4:58 pm by Brendan Gregg · Permalink · Comments Closed
In: Cloud, DTrace, KVM, performance, xen, zones

The USE Method: SmartOS Performance Checklist

The USE Method provides a strategy for performing a complete check of system health, identifying common bottlenecks and errors. For each system resource, metrics for utilization, saturation and errors are identified and checked. Any issues discovered are then investigated using further strategies. In this post, I’ll provide an example of a USE-based metric list for [...]

Posted on December 19, 2012 at 10:23 am by Brendan Gregg · Permalink · Comments Closed
In: illumos, omnios, performance, smartos, Solaris, usemethod, zones