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SubjectRe: USB disk speed regression WD Elements - with bisect result 22547c4cc4fe20698a6a85a55b8788859134b8e4
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Dne 25.7.2017 v 19:02 Alan Stern napsal(a):
> On Tue, 25 Jul 2017, Zdenek Kabelac wrote:
>
>> And in fact it's the very same commit - which adds this message
>> (just check current 4.13 with and without this commit reverted)
>>
>> So here goes usbmon trace (aka 'cat /sys/kernel/debug/usb/usbmon/0u')
>> no other usb device has been touch so should not hopefully interfere here.
>>
>> Trace is from 4.12 kernel - so it has reported "not running at top speed"
>
> Can you collect an equivalent trace under 4.8?
>
> Alan Stern
>

Hi


Sure - no pb.

Just attached & detached USB disk in this trace

Zdenek




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