Cindori AB (http://tinyurl.com/obyclqf) has released Disk Sensei, a disk performance tool for Mac OS X.
It can monitor, maintain and enhance storage performance and utilization. Disk Sensei lets you: monitor drive usage and statistics; analyze drive health; visualize drive content to help understand and maintain your file system; clean out space-hogging caches, logs and other large files; optimize drive performance and free up space through advanced OS X tweaks; enable Trim for Solid State Drives; and benchmark drives and compare their performance.
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