Re: [yocto] Reducing the size of the image by optimizing python

[Abhi Arora]

Thanks for the reply. Can you help me which file to modify to prevent 
downloading certain packages and modules using BAD_RECOMMENDATION?

And how to have only pyc files in the final image to improve speed and reduce 
footprint?

Following are the lines in my yocto project which install python packages.

IMAGE_INSTALL_append = " \
python3 \
python3-core \
python3-misc \
python3-async \
python3-six \
python3-websockets \
python3-requests \
python3-urllib3 \
python3-chardet \
python3-websocket-client \
python3-pyopenssl \
python3-simplejson \
python3-cython \

Pardon for some stupid questions as I am new to yocto.

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From: Khem Raj 
Sent: Friday, October 18, 2019 2:28:23 PM
To: Abhi Arora 
Cc: yocto@yoctoproject.org 
Subject: Re: [yocto] Reducing the size of the image by optimizing python



On Fri, Oct 18, 2019 at 1:21 PM Abhi Arora 
mailto:abhiaro...@live.com>> wrote:
Hello,
I am having an embedded system. We have bsp with python 3.5 but we want to 
reduce its size further. I am planning to have only oyc files but not sure how 
it can be achieved in recipes. Also, I want to know if there is a other way to 
reduce the footprint.

Please start by eliminating modules first so find which modules are required 
for your workloads and remove all other modules from image by adding them to 
BAD_RECOMMENDATIONS from IMAGE_INSTALL


Please help.

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Re: [yocto] Reducing the size of the image by optimizing python

[Richard Purdie]

On Sat, 2019-10-19 at 12:45 +, Abhi Arora wrote:
> Thanks for the reply. Can you help me which file to modify to prevent
> downloading certain packages and modules using BAD_RECOMMENDATION? 
> 
> And how to have only pyc files in the final image to improve speed
> and reduce footprint?
> 
> Following are the lines in my yocto project which install python
> packages.
> 
> IMAGE_INSTALL_append = " \
> python3 \
> python3-core \
> python3-misc \
> python3-async \
> python3-six \
> python3-websockets \
> python3-requests \
> python3-urllib3 \
> python3-chardet \
> python3-websocket-client \
> python3-pyopenssl \
> python3-simplejson \
> python3-cython \
> 
> Pardon for some stupid questions as I am new to yocto.

Take python3-misc out that list as its huge. See if anything breaks, if
so, try and install just what you need, not the large "catchall"
package.

Cheers,

Richard

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Re: [yocto] Reducing the size of the image by optimizing python

[Abhi Arora]

Thanks your for the suggestion.

>From where I can find out what modules and packages python3-misc downloads and 
>installs? I am new to yocto and Don't know where to look for. I tried grep but 
>didn't help me.

And how about optimization using pyc file? Is it doable?

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From: Richard Purdie 
Sent: Saturday, October 19, 2019 8:04:58 PM
To: Abhi Arora ; Khem Raj 
Cc: yocto@yoctoproject.org 
Subject: Re: [yocto] Reducing the size of the image by optimizing python

On Sat, 2019-10-19 at 12:45 +, Abhi Arora wrote:
> Thanks for the reply. Can you help me which file to modify to prevent
> downloading certain packages and modules using BAD_RECOMMENDATION?
>
> And how to have only pyc files in the final image to improve speed
> and reduce footprint?
>
> Following are the lines in my yocto project which install python
> packages.
>
> IMAGE_INSTALL_append = " \
> python3 \
> python3-core \
> python3-misc \
> python3-async \
> python3-six \
> python3-websockets \
> python3-requests \
> python3-urllib3 \
> python3-chardet \
> python3-websocket-client \
> python3-pyopenssl \
> python3-simplejson \
> python3-cython \
>
> Pardon for some stupid questions as I am new to yocto.

Take python3-misc out that list as its huge. See if anything breaks, if
so, try and install just what you need, not the large "catchall"
package.

Cheers,

Richard

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Re: [yocto] Reducing the size of the image by optimizing python

[richard . purdie]

On Sat, 2019-10-19 at 14:55 +, Abhi Arora wrote:
> Thanks your for the suggestion. 
> 
> From where I can find out what modules and packages python3-misc
> downloads and installs? I am new to yocto and Don't know where to
> look for. I tried grep but didn't help me.

python3-misc is a package. You can look at its dependencies to see what
it adds to the image.

> And how about optimization using pyc file? Is it doable?

Start simple. If you have python3-misc installed its using a lot of
space and is the sensible place to start with trimming things down.

Optimising to just pyc files is an optimisation further than most
people find they need and will be much harder to do.

Cheers,

Richard



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Re: [yocto] Reducing the size of the image by optimizing python

[Yann Dirson]

You can also look at the package dependency graph (see the file
generated by bitbake -g) to get a better idea of what pulls what.

2019-10-19 17:10 UTC+02:00, richard.pur...@linuxfoundation.org
:
> On Sat, 2019-10-19 at 14:55 +, Abhi Arora wrote:
>> Thanks your for the suggestion.
>>
>> From where I can find out what modules and packages python3-misc
>> downloads and installs? I am new to yocto and Don't know where to
>> look for. I tried grep but didn't help me.
>
> python3-misc is a package. You can look at its dependencies to see what
> it adds to the image.
>
>> And how about optimization using pyc file? Is it doable?
>
> Start simple. If you have python3-misc installed its using a lot of
> space and is the sensible place to start with trimming things down.
>
> Optimising to just pyc files is an optimisation further than most
> people find they need and will be much harder to do.
>
> Cheers,
>
> Richard
>
>
>
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Re: [yocto] Reducing the size of the image by optimizing python

[Abhi Arora]

Thank you for being patient.

I am unable to find out python3-misc package online. Neither "sudo apt-get 
install python3-misc" helps me nor "pip install python3-misc".

I am a newbie, please help me what kind of package it is and where to find it.

I am planning to install it in my host machine and see if I am able to run my 
scripts and manually add or remove modules and python packages to get minimal 
required system for my scripts.

For that I need to access python3-misc and what it installs.



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From: Yann Dirson 
Sent: Saturday, October 19, 2019 8:51:52 PM
To: richard.pur...@linuxfoundation.org 
Cc: Abhi Arora ; Khem Raj ; 
yocto@yoctoproject.org 
Subject: Re: [yocto] Reducing the size of the image by optimizing python

You can also look at the package dependency graph (see the file
generated by bitbake -g) to get a better idea of what pulls what.

2019-10-19 17:10 UTC+02:00, richard.pur...@linuxfoundation.org
:
> On Sat, 2019-10-19 at 14:55 +, Abhi Arora wrote:
>> Thanks your for the suggestion.
>>
>> From where I can find out what modules and packages python3-misc
>> downloads and installs? I am new to yocto and Don't know where to
>> look for. I tried grep but didn't help me.
>
> python3-misc is a package. You can look at its dependencies to see what
> it adds to the image.
>
>> And how about optimization using pyc file? Is it doable?
>
> Start simple. If you have python3-misc installed its using a lot of
> space and is the sensible place to start with trimming things down.
>
> Optimising to just pyc files is an optimisation further than most
> people find they need and will be much harder to do.
>
> Cheers,
>
> Richard
>
>
>
> --
> ___
> yocto mailing list
> yocto@yoctoproject.org
> https://lists.yoctoproject.org/listinfo/yocto
>


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