[Bug 219220] syscalls (ioctls) on USB devices are very slow
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Thu May 11 13:38:09 UTC 2017
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=219220
--- Comment #19 from Hans Petter Selasky <hselasky at FreeBSD.org> ---
Also the output "vmstat -i" might be interesting.
You can try to disable ugen1.1 like this:
usbconfig -d 1.1 set_config 255
And see if it helps.
--HPS
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