Note: This book is currently out of date for users of macOS 10.15 Catalina or later. We plan to release a new book in the first quarter of 2022 to provide up-to-date instructions on this topic.
If your Mac seems a lot slower now than when you first bought it, it’s not your imagination. Over time, your Mac can become bogged down with extra background tasks, run out of free RAM and disk space, and encounter a wide variety of other issues that lead to slow performance. With expert advice and a little detective work, you can find and fix these problems—returning your Mac to its original, peppy self.
Don’t depend on random tips that may or may not help. In this book you’ll learn how to find and address the exact causes of slow behavior, with before-and-after tests to confirm your results. You’ll discover how to optimize CPU and RAM usage, eliminate disk bottlenecks, improve network performance (including web browsing and email), speed up peripherals, perform strategic software and hardware upgrades, and much more.
This book covers 10.9 Mavericks through 10.14 Mojave. It does not cover 10.15 Catalina or later.
In this practical, hands-on book, Joe Kissell shares the results of his extensive research:
- Learn the Basics: Separate fact from fiction when it comes to commonly recommended performance tips.
- Diagnose Speed Issues: Use benchmarking and other diagnostic tools to pinpoint speed problems and test your fixes.
- Try Quick Fixes: Discover the most effective techniques for overcoming random, temporary speed problems.
- Lighten Your CPU’s Load: Track down apps that are bogging down your processor and teach them to behave.
- Increase Available RAM: Turn off or manage processes that are using too much memory so there’s more to work with.
- Improve Disk Performance: Fix disk errors, avoid running out of space, and eliminate inefficient disk access.
- Boost Network Speeds: Speed up Wi-Fi and Ethernet network access, DNS lookups, web browsing, and email.
- Monitor System Resources: Use Activity Monitor and other tools to keep tabs on your Mac’s CPU, RAM, disk, and network usage.
- Upgrade Your Hardware: Learn when and how to install additional RAM, a new hard drive, an SSD, or other hardware upgrades.
What happened to Speeding Up Your Mac: A Joe On Tech Guide?
Long story short, this is an updated version of the same book, with a different title. The Joe On Tech book started out as Take Control of Speeding Up Your Mac, and now it’s back home in the Take Control catalog.
Take Control publisher Joe Kissell has written more than 60 books about technology, including many popular Take Control books. He formerly wrote for publications such as Macworld, Wirecutter, and TidBITS. He lives in Saskatoon with his wife, his two children, and his cat.
What’s New in Version 2.1
Version 2.1 is a minor revision that brings this book up to date with macOS 10.14 Mojave and various changes in third-party hardware and software. Nearly all the changes in this version were quite small, but some of the noteworthy items I addressed were:
- Removed outdated information about obsolete hardware and discontinued software
- Added a sidebar about the perils of APFS with mechanical hard drives; see Hard Disks and Macs Running Mojave
- Noted current limitations in APFS support in Use a Third-Party Disk Repair Tool and Use a Defragmenting Utility
- Added links to ad-blocking extensions suitable for Safari 12 in Block Ads and Trackers
- Added a note about new Wi-Fi naming conventions in 802.11 Flavors
- Updated my recommendations for fast DNS service in Use a Faster DNS Provider
- Included information about the RAM and storage upgradability of newer Mac models in Upgrade Your Hardware
The second edition (version 2.0) of this book contained a large number of minor changes, but only the following major changes since Speeding Up Your Mac: A Joe On Tech Guide, version 1.1:
- Updated the book for compatibility with macOS 10.13 High Sierra and the latest Mac models available as of December 2017
- Added iStat Menus to the list of utilities in Use Live Monitoring Tools
- Mentioned a way to speed up Time Machine in Adjust Backup Software Settings
- Clarified details about how much space you should leave available on your disk in Determine How Much Space You Need
- Revised Use Optimized Storage in Sierra or Later with better details and new advice
- Updated various topics in Speed Up Your Browser to cover the latest browser versions
- Revised Monitor Network Activity to use Little Snitch, rather than the now-discontinued Private Eye, as an example
- Added a mention of mesh/hub-and-spoke Wi-Fi routers in Signal Strength
- Explained the importance of using the right kind of Ethernet cable in Check Your Wired Ethernet Connection
- Revised Use a Faster DNS Provider to reflect the fact that namebench is no longer being developed (and has problems under High Sierra)
- Added CursorSense to the utilities covered in Adjust Acceleration
- Updated the sidebar Is My Storage Upgradable? and the topic Add a Second (or Larger) Display to cover recent Mac models
- Rewrote most of the chapter Speed Up Your Peripherals, which now contains complete information about USB 3.1 and Thunderbolt 3
Posted by Joe Kissell on December 29, 2017
I joined Chuck Joiner on MacVoices (audio and video) to discuss the new editions of Take Control of Backing Up Your Mac, Take Control of Maintaining Your Mac, Take Control of Troubleshooting Your Mac, and Take Control of Speeding Up Your Mac—including their transition from Joe On Tech books back to the Take Control world:
MacVoices #17227: Joe Kissell Releases Four Take Control Titles Updated for High Sierra
Posted by Joe Kissell on January 25, 2013
On p. 83, in the sidebar “Should You Disable Spindump?”, I explain how to disable the spindump process, which has been implicated in slowdowns after a crash (as it collects data to send to Apple about the cause of the problem). I did this on my own Mac without any problems, but two readers have now reported to me that after trying this, their Macs froze and wouldn’t restart, requiring them to restore their disks from a backup. I can’t explain why that would happen, but to be on the safe side, I recommend just ignoring that sidebar and not disabling spindump. If you do feel the need to try it, be sure you have a recently updated bootable duplicate first—just in case!
November 23, 2021—This book is currently out of date for users of macOS 10.15 Catalina or later. We plan to release a new book in the first quarter of 2022 to provide up-to-date instructions on this topic.
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