Low End Mac Reader Specials
TypeStyler For Mac OS X is Now Shipping! Download The Free Fully Functional 60 Day Tryout at www.typestyler.com
OWC: Get the Right Memory / Ram for your Mac. Top Quality, Competitive Prices, Lifetime Warranty. Expert Support and Video Installation Guidies too! 4.0GB Matched Sets from $87.99, Options up to 32GB. Click here
Don't install Parallels to play poker online! Poker Mac will show you how
to download and install a native Mac poker application such as Full
Tilt Poker Mac.
Laptop Hardware Provided by TechRestore - Overnight Mac & iPod Repairs.
Compare products like desktop computers, apple laptops, apple macs, and LCD Monitors side by side! All the information and reviews to make the best purchasing decision for new mobile phones, sat nav systems, or MP3 players. The Ciao online shopping community makes searching products easy for you.
Why OS X Doesn't Need a RAM Disk
Dan Knight - 2002.02.01
As noted elsewhere today, I've been using ramBunctious, a classic Mac OS RAM disk program, for years. Although it works in Classic mode under OS X, the RAM disks it creates are inaccessible to X, so I've retired a real workhorse program.
I like the idea of using a RAM disk, because these are files I may be accessing many times during the course of the day, but now I've learned that Mac OS X may make RAM disks a thing of the past. That's because X can use any available system memory to cache files - which helps explain why Classic under X had a higher disk score than Mac OS 9.2.2 all by itself in yesterday's tests.
As Ric Davis explained to me, X will intelligently cache files - the more often you access them, the more likely they'll be cached for lightning-fast access. Although that won't give the same speedy load times the first time a file is accessed, repeated access should be at pretty much RAM disk speed.
Benefits of not using a RAM disk include not locking up all that memory (128 MB in my case), not spending several seconds loading the RAM disk image at startup, and not having to worry about the computer crashing with unsaved contents on the RAM disk (which shouldn't be a problem with X anyhow).
That said, Gregory Youngs writes that all disk writes are cached under BSD/OS X, which means that a freeze, lockup, or power failure could cost you "saved" data that's only been cached and not yet written to the hard drive. Youngs further notes that the Unix sync command, which forces the OS to write all cached data to disk, doesn't appear to be available under OS X.
With the stability of Unix and a UPS (or portable), you minimize the chance of losing unwritten cached data, but there's still a risk. (It's probably less of a risk than we had with the regular freezes, bombs, and other problems that required a forced restart under the classic Mac OS).
Perhaps best of all, under OS X you don't have to fiddle with disk cache size for optimum performance - it's all done automatically by the OS.
I'd still like to see a RAM disk like ramBunctious (they're working
on it), even if only to see if it's worth trying, but with caching this
good, a RAM disk might not make any sense at all.
Recent X-Basics Columns
- Internet sharing a breeze in OS X, 04.07. Another OS X advantage -- sharing an Internet connection is very easy.
- Using Jaguar's Finder for FTP, 02.11. You don't need any special software to download files via FTP; it's already built into Jaguar.
- X Files, 07.24. How the Home folder in Mac OS X helps you better organize your work.
- More in the X-Basics index.
Links for the Day
- Mac of the Day: 17" iMac G4/800 MHz, July 2002 - The iMac 'grows up' with a 17" 1440 x 900 display.
- Group of the Day: LisaList supports Lisa users.
- November 8 in LEM history: 99: OS 9: I think I like it - 01: The simplified Mac life - Soured on Windows - Flea market Mac - 02: Little room for improvement in new 'Books - Combo drive upgrade for iceBooks - 04: Re-Porter - 05: Fix the old iMac or buy a Mac mini? - Apple's Copland project - 06: MacBook Core 2 - MacBook value equation - Cheap is as cheap does - 07: Problems with Classic mode in Tiger - The G4 Power Mac that won't run Leopard
- Support Low End Mac
Recent Content on Low End Mac
- Quad-Core CPU Makes Sense in MacBook Pro, OS X 10.6 Causing Overheating, Overseas Power, and More, The 'Book Review, 11.06. Also Late 2009 MacBook reviewed, how to add RAM to new MacBook, 18.4in Acer notebook used Intel i7, and SanDisk SSD chosen for Sony VAIO X.
- Dumping Macs for Google Apps, SSD in iMac, Late 2009 iMac Performance Problems, and More, Mac News Review, 11.06. /newsrev/09mnr/1106.html
- WiFi Paranoia, iMac-O-Lantern, Magic Mouse Does Click, Free Clipboard Managers, and More, Charles W. Moore, Miscellaneous Ramblings, 11.05. Also strange time stamps, problem with ColorIt on Intel Mac, and the story behind OS X 10.5.4 install discs.
- IDE Is Dead; Long Live SATA!, Dan Knight, Mac Musings, 11.04. SATA has displaced parallel ATA. While IDE hard drives haven't disappeared, the best deals are in SATA hard drives.
- QuickTime X in Snow Leopard Imports, Trims, and Publishes Video Quickly and Easily, Alan Zisman, Zis Mac, 11.04. The long, slow process of importing video into iMovie to edit it, then render it to another format, is history as QuickTime X does that much more quickly.
- More links in our archive.
Recent Deals
- Best Mac Pro Deals, 11.03. Used 2.66 GHz 4-core, $1,300; 3.0 8-core. $2,299; refurb 2.66 4-core Nehalem, $2,149; 2.93, $2,549; 2.26 8-core, $2,799; 2.93, $4,999.
- Best iPhone Deals, 11.03. New 8 GB iPhone 3G, $$99; refurb 16 GB 3GS, $149; new, $199; 32 GB, $299.
- Best 12" PowerBook G4 Deals, 11.03. Used 867 MHz SperDrive, $348; 1 GHz, $499; 1.33 Combo, $298; SD, $559; 1.5 Combo, $448; SuperDrive, $589.
- Best Power Mac G3 and PCI Video Card Deals, 11.02. Used beige 300 MHz, $25; G4/366, $49; blue & white 350, $80; 400, $90; 450, $105; PCI video cards from $15; shipping additional.
- Best Power Mac G4 and AGP Video Card Deals, 11.02. Used 400 MHz, $50; 733 MHz, $69; 933 MHz, $209; 1.25 GHz dual, $299.
- Best 15" MacBook Pro Deals, 11.02. Used 2.0 GHz, $800; 2.2, $900; 2.4, $1,000; refurb 2.53, $1,449; 2.66, $1,699; 2.8, $1,949; 3.06, $2,169; new 2.53, $1,579; 2.66, $1,799; more.
- Best Mac mini Deals, 10.30. Used 1.33 GHz G4 mini, $379; 1.42, $389; 1.5, $419; 1.83 GHz Core Duo, $350; Core 2, $439; new 2.26 GHz nVidia, $580; 2.53 GHz, $770; Server, $990.
- Best G4 iBook Deals, 10.30. Used 12" 1.07 GHz Combo, $225; 1.33 GHz, $298; 14" 1 GHz, $349; 1.33 GHz, $398; 1.42 GHz SuperDrive, $498.
- Best Classic Mac OS Deals, 10.30. System 6.0.8 floppies, $10; 7.1, $12; 7.5, $20; 7.5 CD, $4; 7.6 $13; 8.1, $11; 8.5, $20; 8.6, $90; 9.0, $20; 9.2.2, $30.
- More deals in our archive.
About LEM | Support | Usage | Privacy | Contacts
Navigation
Used Mac Dealers
Apple History
Video Cards
Email Lists
Favorite Sites
MacSurfer
MacMinute
MacInTouch
MyAppleMenu
InfoMac
Macs Only!
The Mac Observer
Accelerate Your Mac
RetroMacCast
PB Central
MacWindows
The Vintage Mac
Museum
DealMac
DealsOnTheWeb
Mac2Sell
ramseeker
Mac Driver Museum
JAG's House
System
6 Heaven
System 7 Today
the pickle's Low-End
Mac FAQ
Abandonware
Petition
Mac vs. PC Info
Affiliates
The Apple
Store
Mac
Connection
B&H
MacMall
TechRestore
ExperCom
Crucial
Memory
batteries.com
Advertise
MacMinute
MacInTouch
MyAppleMenu
InfoMac
Macs Only!
The Mac Observer
Accelerate Your Mac
RetroMacCast
PB Central
MacWindows
The Vintage Mac
Museum
DealMac
DealsOnTheWeb
Mac2Sell
ramseeker
Mac Driver Museum
JAG's House
System 6 Heaven
System 7 Today
the pickle's Low-End
Mac FAQ
Abandonware
Petition
Mac vs. PC Info
Mac Connection
B&H
MacMall
TechRestore
ExperCom
Crucial Memory
batteries.com

