Unverified50% confidenceFactExact time
ext4's block group mechanism divides a disk partition into several regions, each block group is typically 128 MB, and the Orlov block allocation algorithm is used for directory allocation.
1
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50%
Confidence
Long-term
Relevance
9/1/2026
First Seen
Sources
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Related Claims
Unverifiedext4 introduced the extent data structure, which describes contiguous regions using a starting block number plus a count of consecutive blocks; a single extent can describe up to 128 MB of contiguous space at a 4 KB block size.74% similarUnverifiedA cluster is the basic storage unit in a file system; Windows FAT16/FAT32 and early NTFS file systems divide file data into fixed-size clusters stored on the physical sectors of a disk.64% similarUnverifiedThe G1 collector divides heap memory into multiple equal-sized Regions and is suitable for applications with heap memory in the 4GB–16GB range.63% similarUnverified差分启发式需要O(K×N)的存储空间（K个地标、N个节点），例如100万节点的图使用16个地标、每个距离值4字节存储，总内存约64MB63% similar
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