Windows – SSD high Disk Queue length; slow computer – what is the cause or solution

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According to this, disk queue length is the number of hard disk requests stacked up.

I have a laptop with a SSD drive. The disk queue length consistently gets up over 10.00 when doing things like loading programs. (Outlook, firefox, etc). Other computers have an average of a hundredth — 0.01 that sometimes goes to 0.10. This is with a traditional hard disk.

What is the symptom of this? Everything seems to tell me that the SSD is in good health and these things don't fragment (per my understanding).

So, what might this be or how can I solve this? Said computer is just a pain to use… Is this simply a bad or failing SSD drive?

Best Answer

Root cause can be one of these:

  • you have "Virtual Memory" turned ON. Using "Virtual Memory" on SSD deteriorate system performance. Experiment with turning it off.

  • RAM of your PC is too low, especially if it is 2GB or less, your system will heavily depend on virtual memory which entirely hamper Disk I/O performance.

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