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Interesting article on OS X vs. XP optimization <http://www.xvsxp.com/system-tools/#diskUtils>
Excerpt:
OS X: OS X has no defrag application, however, OS X has implemented four methods of dealing with fragmentation and IO performance.
Automatic file defragmentation works when you open a file in OS X. If the is under 20MB and fragmented, OS X will move it to a contiguous block of space on your hard disk.
Delayed allocation (for HFS+ volumes) allows a number of small allocations to be combined into a single large allocation in one area of the disk.
Hot-File-Adaptive-Clustering tracks frequently used files and moves them to faster portions of your hard disk.
Aggressive read-ahead and write-behind caching reduces the impact associated with minor fragmentation
HFS+ avoids reusing space from deleted files as much as possible, to avoid prematurely filling small areas of recently-freed space, thereby reducing the risk of fragmentation.
Apple’s Technical Document regarding optimization: About Disk Optimization. <http://docs.info.apple.com/article.html?artnum=25668>
Excerpt:
OS X: OS X has no defrag application, however, OS X has implemented four methods of dealing with fragmentation and IO performance.
Automatic file defragmentation works when you open a file in OS X. If the is under 20MB and fragmented, OS X will move it to a contiguous block of space on your hard disk.
Delayed allocation (for HFS+ volumes) allows a number of small allocations to be combined into a single large allocation in one area of the disk.
Hot-File-Adaptive-Clustering tracks frequently used files and moves them to faster portions of your hard disk.
Aggressive read-ahead and write-behind caching reduces the impact associated with minor fragmentation
HFS+ avoids reusing space from deleted files as much as possible, to avoid prematurely filling small areas of recently-freed space, thereby reducing the risk of fragmentation.
Apple’s Technical Document regarding optimization: About Disk Optimization. <http://docs.info.apple.com/article.html?artnum=25668>
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