Originally posted by David (PassMark)
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Just a little clarification on my USB failure screenshot, that was a simulated test case so I could make a visual representation/example of what I would normally see. For the example, I literally pulled out one of the USB loopbacks right before the test ended. In reality, there would be 5 to 10 USB errors out of trillions of cycles over a multi-hour test.
We have the hardest time with USB loopbacks and they tend to fail on us a lot. This is when we're testing brand new motherboards from big dollar companies like Intel, so we usually don't suspect the motherboard's USB ports as being the culprit. And usually when we switch out the loopback to another loopback, it passes on the same port. Since the USB loopbacks have a modest rate of errors, it would be nice to set a passing tolerance level manually. There are other IOs that would be nice to have tolerance as well, just maybe not the critical ones like CPU/RAM/Disk etc. I totally get the example of some items needing to expect 100% reliability, like CPUs.
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