NTFS and Windows also employ some highly intelligent disk optimization techniques not only are hot files batched together at the front of the disk by ProcessIdleTasks() in advapi32, the OS also uses a time-ordered layout of bootup files that it prefetches as the bootup progresses. In addition to a hotzone HFS+'s OS X drivers also has automatic idle-priority defragmentation scheduling on files that would benefit from the treatment. HFS+ puts them there and headseeking is reduced since the catalog is at the beginning of the disk along with the hotfile space. In the metadata zone is space reserved for frequently used files. HFS+ uses a metadata zone where all the B-trees are stored like the catalog b-tree and extents b-tree.

Keep track of frequently used files and put them in a special area. I think filesystems should do what HFS+ does. Pass 1 of 1, 1/24 (4%): 327.4 frags/MB /home/jira/atlassian-jira-enterprise-3.13.4/edit-webapp/WEB-INF/classes/entityengine.xml~Įrror defragmenting. 0.2 % fragmentation (24 files), 79.3 average frags/MBģ27.42 /home/jira/atlassian-jira-enterprise-3.13.4/edit-webapp/WEB-INF/classes/entityengine.xml~ģ27.42 /home/jira/atlassian-jira-enterprise-3.13.4/edit-webapp/WEB-INF/classes/ defrag ~īuilding list of files to analyze. Made defrag existing in pyfragtools-0.1 executable and sudo. Have I misunderstood anything or any ideas why it 'aint working for me? Just tried the script approach on 9.04 server.

Mydefrag scripts for movies