Re: [Gumstix-users] Frustrated findings from running Yocto/Denzil on Gumstix/Overo

[Andreas M. <sch...@go...>]

On Fri, Jan 18, 2013 at 4:44 PM, Arne Lie <Arn...@si...> wrote:
> Hi again,
>
> Findings from today after running the Yocto/Denzil build from this morning, using:
> PREFERRED_PROVIDER_udev = "udev"
> in conf/local.conf
>
> System:
> Yocto (Built by Poky 7.0.2) 1.2.2 overo ttyO2
>
> Linux:
> Linux overo 3.2.0 #1 PREEMPT Thu Jan 17 12:54:54 CET 2013 armv7l GNU/Linux
>
> root@overo:~# systemd-analyze
> Startup finished in 3571ms (kernel) + 33319ms (userspace) = 36891ms
>
> My goal is to make a much faster userspace boot-time, 33 seconds it 20 too much. I see reports on 8 seconds (EarthStorm/Tobi).
> And, hopefully, to make the system run on fewer milliamperes, currently, I am somewhere between 240-300 mA...
>
> So, how to I avoid starting not needed services/devices, e.g., bluetooth/rfcomm/hci services? I have spent some time learning about systemd, which I now understand has replaced sysinitv. But I cannot understand which servcies is started, from where... And,  it seems that my buildsystem is a hybrid systemd/sysinitv, and it also reports about LSB: E.g.,
> * /etc/inittab is still there, but is it in use?
> * /etc/init.d/ is populated with some files, but are they used?
> * /etc/rcX.d directories still exist, and they are populated with some symbolic links
> * my system uses BusyBox, why?
> * opkg seems not to be able to install anything
> * many systemd tools I find in the internet literature is not there
>
> The frustrating thing is that the Linux/Gumstix universe is now moving so fast that most of the online literature is not valid anymore. And I cannot seem to find any valid documentation for the build I have. And, I know that the bleeding edge is at Linux 3.6, so...
>
> Hopefully, somebody has some pointers that I do not find via Google..??
>
> Best regards
>
> Arne
>
>
>> -----Original Message-----
>> From: Arne Lie [mailto:Arn...@si...]
>> Sent: 18. januar 2013 09:31
>> To: General mailing list for gumstix users.
>> Subject: Re: [Gumstix-users] Building Yocto for Gumstix/Overo (RE:
>> Connection Refused to Steve's Git repo)
>>
>> Hi,
>>
>> Just did a bitbake jumpnow-console-image with your
>> PREFERRED_PROVIDER_udev = "udev" , and it went all the way with building
>> xloader, u-boot, uImage, and rootfs. Thanks so much!!! :-)
>>
>> Best regards
>> Arne
>>
>
systemd-analyse blame

gives more details. For creatin a graph there is also an option (I
don't have it here on my win PC.. - systemd-analyse --help) Note: on
first boot it might last longer for postint tasks. Same for further
boots?

To enable/disable

systemctl disable foo.service

should help. See man systemctl.

The available service files should be found at /lib/systemd/system.
See man systemd.unit.

Hope it helps a bit

Andreas