On Aug 6, 2019, at 7:04 AM, Stephen John Smoogen smooge@gmail.com wrote:
On Mon, 5 Aug 2019 at 19:49, Warren Young warren@etr-usa.com wrote:
On Aug 5, 2019, at 11:25 AM, Stephen John Smoogen smooge@gmail.com wrote:
On Mon, 5 Aug 2019 at 13:17, Jerry Geis jerry.geis@gmail.com wrote:
an external SSD disk USB3 connected and the machine "freezes"... Why is that?
You may have a motherboard which is routing a lot through a single USB controller.
Ridiculous if true. Modern OSes solved the blocking I/O problem decades ago.
The OS can only do as much as the hardware allows.
Back when we had serial mice, the most common data rate was 1200 bps. That’s 0.0012 Mbit/sec. If your 480 Mbit/sec USB-2 or 5/10/20 Mbit/sec USB-3 bus is so jammed up that it can’t trickle through that much data per second from the mouse while an SSD on the same bus is blocked on I/O, it’s dreck hardware.