Archive for the ‘Mac OS X’ Category

ZFS: Apple’s New Filesystem That Wasn’t

Prologue (2006) I attended my first WWDC in 2006 to participate in Apple’s launch of their DTrace port to the next version of Mac OS X (Leopard). Apple completed all but the fiddliest finishing touches without help from the DTrace team. Even when they did meet with us we had no idea that they were mere [...]

Posted on June 15, 2016 at 6:30 am by ahl · Permalink · Comments Closed
In: Apple, Mac OS X, ZFS

The USE Method: Mac OS X Performance Checklist

This is my example USE Method-based performance checklist for the Apple Mac OS X operating system, for identifying common bottlenecks and errors. This draws upon both command line and graphical tools for coverage, focusing where possible on those that are provided with the OS by default, or by Apple (eg, Instruments). Further notes about tools [...]

Posted on September 18, 2013 at 11:37 pm by Brendan Gregg · Permalink · Comments Closed
In: DTrace, Mac OS X, macosx, performance, usemethod

Webex utilities

I wish that none of our customers encountered problems with our product, but they do, and when they do our means for remotely accessing their systems is often via a Webex shared screen. We remotely control their Delphix server to collect data (often using DTrace). While investigating a customer issue recently I developed a couple [...]

Posted on September 14, 2012 at 12:07 pm by ahl · Permalink · Comments Closed
In: Delphix, Mac OS X, Webex