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TUSB9261: Seeing slower read speeds than write speeds on USB3.0 interface.

Part Number: TUSB9261

Hello,

Our customer is experiencing an unusual situation where their read speeds are around 95MB/s slower than write speeds as seen from USB host. Our device has the TUSB9261 chip inside communicating with a SATA SSD. Details below:

  • Read Speed ~135MB/s
  • Write Speed ~230MB/s
  • OS - Redhat 7.2
  • Tested using Linux DD commands
  • SSD formatted as XFS

Any thoughts on why they would see slower speeds reading?