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diglloydTools IntegrityChecker 'icj' beta 6 now posted

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See NEW! Cross Platform Java-Based diglloydTools IntegrityChecker for details.

No changes to native macOS version. Changes to IntegrityChecker java version (icj). See the diglloydTools release notes page and download page.

Java-based IntegrityChecker ('icj') is now beta 5, and it is rocking fast.

Update 14 August: beta 6 is out. See the diglloydTools release notes page and download page.

I’ve never seen anything so fully utilize the system resources: disk I/O up to 128 outstanding buffers, multithreaded up to 64 threads and basically using everything there better than 99.9% of the apps out there. And it’s cross-platform: macOS, Windows, NAS operating environments, Linux, etc.

I had fun coding it, but maybe there are some more tweaks. The trickiest thing is optimizing for 4/6/8/12 cores and different speed drives since the interaction is complex. The program defaults do extremely well on the late 2015 iMac 5K and the late 2013 8-core Mac Pro. The main issue is that I don’t have a fast enough SSD on the 8-core 3.3 GHz Mac Pro to drive the program hard, so I have to test with dual instances on both the internal SSD and a RAID-0 stripe of two OWC Mercury Accelsior PCIe SSDs.

A cool new feature is finding duplicates; it saved me a whopping 100GB! By using the hashes, exact matches can be found unerringly and all but instantly (once the hashes are done via the 'update' command).

diglloydTools IntegrityChecker ('icj' Java version) pushing 3.3 GHz late 2013 Mac Pro to its limits

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