low-level USB control transaction timing question RRS feed

  • Question

  • Hello, John Hentges here with ACCES I/O Products, Inc.

    We make Process Control / Data Acquisition gear for PCs (similar to Keithley MetraByte, IOTech, Measurement Computing, National Instruments, etc).

    For decades we've prided ourselves on our USB performance: we get as little as 250µs per transaction (in Windows versions newer than 98se and Linux).

    But some customers see 5000µs transactions on average/typical.  One customer was able, on the same computer, to reduce transaction times from >5ms to <1ms by switching his OS from Windows 7 (fully patched) to Windows 10.

    To which forum shall I post the questions implicit?

    Friday, June 14, 2019 5:36 PM