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HSchulze

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About HSchulze

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  1. Op asked: Why isn't it faster? The throughput algorithms worked for 50MB/s HDDs no longer holds for SSDs. Or is there additional driver and/or OS level (Win10Pro) overhead that is slowing it down? I am defragging about 200x 500KB 3-fragment files, throughput is <100KB/sec, on a Samsung 980.
  2. Long-time-ago (LTO) accessed files and LTO written files should be thrown to end of drive, to save re-defragmenting, and speed up access to newer files at the beginning and middle of the drive. I watched Norton SD for many hours trying to divine what it was up to. it was a Great Thing in the days of DOS. The various things that people want out of their defrag performance should be weighted, based on their priorities
  3. I am doing a once-after-6-months defrag of a 512GB Samsung SSD, which does 1 to 3 GB/s sequential reads, and usually around >600MB/s sequential writes. In an effort to understand the fragmentation, I started by defragging the largest and most fragmented files (top 100, etc) Now that I am looking at 500x 1MB files with ~4 fragments each, I am seeing <1 MB/s throughput for the last hour. I don't know why Defraggler doesn't use a scatter-gather with a live bitmap to read a pile of files into memory (32GB DRAM) in sector order (will help HDDs more), then write them back to the
  4. Defragmenting all files all the time only increases the likelihood of bit rot as the data travels through your CPU, Memory, I/O chip, _without_ CRC protection. Defragging once every month to 3 is enough, unless you are a movie editor, in which case you will copy your files to a different media or server once you are done, and erase the fragmented files anyways (then defrag).
  5. Use Windows recovery options, searchable on Google and other search systems. The latest software will find out what is wrong and make recommendations.
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