Re: 2015-04-19-netbsd-raspi-earmv6hf.img (Re: Raspberry Pi update please.)

[Stephan <stephanwib%googlemail.com@localhost>]

Sorry, I´m replying late (I´ve been very busy :)

I can´t tell whether the kernel was compiled with LOCKDEBUG oder DEBUG
- i just installed Jun´s image as it was.

However, I tested with a current image from head on the Pi 2 and
haven´t seen these issues again. Write speed is about 6,5 MB/s on a
class 10 card, which is not perfect yet, I guess (UHS-I mode required
in the driver?). Also no strange hangs anymore. I saw that MP support
has been disabled again because of interrupt handling issues IIRC.

What I think might be an impact on performance is the dwc2 interrupt
issue - has anybody an idea about that?



2015-04-27 16:17 GMT+02:00 Jared McNeill <jmcneill%invisible.ca@localhost>:
> On Sun, 26 Apr 2015, Stephan wrote:
>>
>> -There seems to be something wrong with write speed to the SD card. I
>> tried a Class 10 card on both RPI and RPI2 and I did not get more than
>> 1MB/s. The same result was with a Class 4 card on the RPI. The image I
>> used before with a private kernel which  Nick provided to me has 4,8
>> MB/s write speed to a Class 4 card. I?ve also intermittently seen some
>> latency when launching executables if they were not in the file cache
>> already as well as the shell hanging on tab completion.
>
>
> Does your kernel have LOCKDEBUG / DEBUG options? They will slow things down
> quite a bit.
>
>> -If I disconnect my USB keyboard within an X session, the framebuffer
>> console appears, leaving the device unusable (even if I plug the
>> keyboard back in).
>
>
> You might have to tell Xorg to use /dev/wsmux1 instead of /dev/wskbd.
>
>> -When opening applications in an X session (e.g. Dillo), the UI (even
>> the mouse pointer) becomes unresponsive. It?s not yet clear to me what
>> causes this, I wasn?t able to provoke this with heavy CPU or I/O load
>> nor memory pressure.
>
>
> Possibly related to LOCKDEBUG / DEBUG again?