[yocto] Building on target
Gary Thomas
gary at mlbassoc.com
Tue Mar 18 10:55:37 PDT 2014
On 2014-03-18 11:49, Rick Bianchi wrote:
> Should have noted, that the date and time reset on every reboot?
Unless you have a battery backed up clock device, e.g. Dallas RTC,
this will happen. If you shut your Yocto system down properly, e.g.
using '# reboot', it will keep track of when you shut down and then
set the clock to that time when you reboot. Without a true RTC, there's
little else that it can do unless you run NTP and get the time from some
external server.
> On Tue, Mar 18, 2014 at 10:48 AM, Rick Bianchi <bianchirickkutta at gmail.com <mailto:bianchirickkutta at gmail.com>> wrote:
>
> Gary,
> I noticed during the make the it was complaining about the date being in the future; I checked and sure thing the date and time were bit off, about 14 years. I set it to the
> correct time with "date --set="18 MARCH 2014 10:32:00" and the build completed in under 10 mins.
>
>
> On Fri, Mar 14, 2014 at 3:16 PM, Gary Thomas <gary at mlbassoc.com <mailto:gary at mlbassoc.com>> wrote:
>
> On 2014-03-14 08:49, Rick Bianchi wrote:
> > If I have time today I will try to reproduce your results. If not, I will get to it first thing next week and post my result.
>
> One thing I forgot to point out is I used the identical kernel+modules for
> both setups. I would be interested to see if that makes any difference for
> you. I can't fully test it as my board doesn't have a Linaro kernel.
>
> So there are four combinations - I only tried the first two:
> Yocto kernel + Yocto rootfs
> Yocto kernel + Linaro rootfs
> Linaro kernel + Yocto rootfs
> Linaro kernel + Linaro rootfs
>
> > On Fri, Mar 14, 2014 at 7:38 AM, Gary Thomas <gary at mlbassoc.com <mailto:gary at mlbassoc.com> <mailto:gary at mlbassoc.com <mailto:gary at mlbassoc.com>>> wrote:
> >
> > On 2014-03-12 13:11, Rick Bianchi wrote:
> > > usbip from /usr/src/kernel/drivers/staging/usbip
> >
> > I finally managed to make this comparison. I did this by taking my Poky/Yocto
> > built system for a i.MX6 system (ARM Cortex-A9) and replaced the rootfs with
> > one for the Gumstix Overo (linaro). The results were nothing like yours, so
> > it's a bit confusing.
> >
> > I actually built an entire Linux kernel - not just the one directory you mentioned.
> >
> > Poky/Yocto - 37 minutes
> > Linaro - 48 minutes
> >
> > There is some flex in these numbers as they were on different [brand] SD cards, etc,
> > but I sure did not see the "5 minutes for Linaro vs 24 hours on Yocto" that you reported.
> >
> > Perhaps the only thing I did differently was I added the SDK tools to my Yocto system
> > using these meta-packages instead of the list you used.
> > packagegroup-core-sdk packagegroup-core-standalone-sdk-target
> >
> > You might try that to see if it makes any difference.
> >
> > n.b. part of what took me so long to get these results is I was trying to run this test
> > on something closer to your Overo board. I have an older OMAP DM3730 board here that I
> > tried to do these same steps, but it was unstable and I could not get the Linaro based
> > file system to work at all. Very strange. In any case, I think the comparison I did get
> > with the i.MX6 is valid.
> >
> > > On Wed, Mar 12, 2014 at 11:44 AM, Gary Thomas <gary at mlbassoc.com <mailto:gary at mlbassoc.com> <mailto:gary at mlbassoc.com <mailto:gary at mlbassoc.com>> <mailto:gary at mlbassoc.com <mailto:gary at mlbassoc.com>
> <mailto:gary at mlbassoc.com <mailto:gary at mlbassoc.com>>>> wrote:
> > >
> > > On 2014-03-12 10:09, Rick Bianchi wrote:
> > > > I completely agree with regards to the comparison, but I have compiled the same exact source on the same target (arm) and it only took 5 minutes when running the Linaro image.
> > > >
> > > > To clarify, the only difference is the build, one is Linaro (took 5 minutes to compile source on the target) and the other Yocto (took almost 24 hours to compile source on the target).
> > >
> > > Sorry, I missed that this was on the same hardware.
> > >
> > > What are you building? I'm going to try and duplicate this here
> > > on hardware I have that's quite similar to your Gumstix board.
> > >
> > > >
> > > > Is there something that I am missing?
> > > >
> > > >
> > > > On Wed, Mar 12, 2014 at 8:28 AM, Gary Thomas <gary at mlbassoc.com <mailto:gary at mlbassoc.com> <mailto:gary at mlbassoc.com <mailto:gary at mlbassoc.com>> <mailto:gary at mlbassoc.com <mailto:gary at mlbassoc.com>
> <mailto:gary at mlbassoc.com <mailto:gary at mlbassoc.com>>> <mailto:gary at mlbassoc.com <mailto:gary at mlbassoc.com> <mailto:gary at mlbassoc.com <mailto:gary at mlbassoc.com>>
> > <mailto:gary at mlbassoc.com <mailto:gary at mlbassoc.com> <mailto:gary at mlbassoc.com <mailto:gary at mlbassoc.com>>>>> wrote:
> > > >
> > > > On 2014-03-12 09:15, Rick Bianchi wrote:
> > > > >
> > > > > I have the gumstix-console-image with the added packages below. When I compile on the target is take a very long time for it to complete, over 24 hours. I have compiled the same
> > > > > code on the same target, but running Linaro image, and it only takes a few minutes. Is there another recipe that I need to add to the build to speed up compiling?
> > > >
> > > > Doubtful. The reason your build on the target takes so long is merely
> > > > one of horsepower - that little ARM processor just doesn't have it, especially
> > > > if you are comparing it to a typical desktop environment.
> > > >
> > > > > EXTRA_IMAGE_FEATURES += "dev-pkgs"
> > > > > IMAGE_INSTALL_append =" autoconf"
> > > > > IMAGE_INSTALL_append =" autofs"
> > > > > IMAGE_INSTALL_append =" automake"
> > > > > IMAGE_INSTALL_append =" ccache”
> > > > > IMAGE_INSTALL_append =" chkconfig"
> > > > > IMAGE_INSTALL_append =" dbus-glib"
> > > > > IMAGE_INSTALL_append =" gcc"
> > > > > IMAGE_INSTALL_append =" glib-2.0"
> > > > > IMAGE_INSTALL_append =" glib-networking"
> > > > > IMAGE_INSTALL_append =" glibmm"
> > > > > IMAGE_INSTALL_append =" packagegroup-core-buildessential"
> > > > > IMAGE_INSTALL_append =" pciutils"
> > > > > IMAGE_INSTALL_append =" pkgconfig”
> > > > > IMAGE_INSTALL_append =" python-scons"
> > > > > IMAGE_INSTALL_append =" systemd-compat-units”
> > > > > IMAGE_INSTALL_append =" sysfsutils"
> > > > > IMAGE_INSTALL_append =" tcp-wrappers"
> > > > > IMAGE_INSTALL_append =" usbutils"
> > > > > IMAGE_INSTALL_append =" util-macros"
> >
> > --
> > ------------------------------------------------------------
> > Gary Thomas | Consulting for the
> > MLB Associates | Embedded world
> > ------------------------------------------------------------
> > --
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> >
> >
> >
> >
>
> --
> ------------------------------------------------------------
> Gary Thomas | Consulting for the
> MLB Associates | Embedded world
> ------------------------------------------------------------
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>
>
--
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Gary Thomas | Consulting for the
MLB Associates | Embedded world
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