[RPI-B] [HEADS UP] DWC OTG TX path optimisation for 11-current
Svatopluk Kraus
onwahe at gmail.com
Wed Jul 29 10:08:31 UTC 2015
On Tue, Jul 28, 2015 at 9:36 AM, Hans Petter Selasky <hps at selasky.org> wrote:
> Hi,
>
> Can you test this:
>
> https://svnweb.freebsd.org/changeset/base/285935
>
I'm hunting some strange behaviour slowdowning my set RPI2 - usb3 hub
- usb3 disk during buildworld, but I have noticed the following:
make -j6 buildworld
before r285935 -> 60145.29 real 350932.67 user 36402.54 sys
after r285935 -> 67831.38 real 196310.43 user 19135.73 sys
The kernel before r285935 was day or two older.
These are just one-run times, however the difference is quite big. The
change r285935 could influence the thing I'm investigating so it's
worse now, but still ...
Svata
> --HPS
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