[Battlemesh] [OpenWrt-Users] wshaper equivalent and smaller - (making the firmware smaller)

[Dave Taht]

As opposed to wshaper, could I get you to try the more modern fq_codel
enabled "aqm-scripts" package in cerowrt?

https://github.com/dtaht/ceropackages-3.3/tree/master/net/aqm-scripts

On Tue, Oct 15, 2013 at 12:33 AM, Pau <hakais at gmail.com> wrote:
> It is right, removing opkg may affect the sysupgrade (w/o -n) by non
> providing the config files which are gonna be stored. But you can add
> them manually in the directory /lib/upgrade/keep.d
>
> Cheers
> --
> ./p4u
>
>
> On Mon, Oct 14, 2013 at 11:45 PM, Ben West <ben at gowasabi.net> wrote:
>> Hi cmsv,
>>
>> I can confirm that disabling "Remove ipkg/opkg status data files in final
>> images" does indeed interfere with sysupgrade's ability to collect and
>> preserve relevant config data.  I've not found this option to save much
>> space in the final squashfs image, at least not enough to justify the
>> hassle.
>>
>> Besides that, I've been using wpad-mini for psk2 IBSS-RSN just fine on
>> atheros devices and ar71xx devices (specifically UBNT Nanostations and
>> TP-Link MR-3020's).  This is working for me on AA r36669 and now also AA
>> r38347, albeit with the beacon_int patch on the latter, mentioned recent
>> threads.
>>
>> Also, I do configure /etc/config/wireless using vi, rather than via luci.
>>
>> Space-saving tips:
>>
>> Enable General Settings -> Optimize for Size in kernel_menuconfig (may be
>> enabled by default).
>> Disable IPv6 if you don't need it.
>> Disable USB and autofs4 support if you don't need them.
>> Try wpad-mini instead of wpad.
>> In Global Build Settings, disable "Compile packages with debugging info" and
>> "Compile the kernel with Debug FileSystem enabled."
>> In Advanced Configuration -> Target Options -> Target Optimizations, add the
>> flag "-funit-at-a-time" to tell GCC to work harder at size optimization.
>> If you need SSL support, i.e. for curl, patch libcurl to use the latest
>> version of cyassl or polarssl instead of openssl.
>>
>>
>>
>>
>> On Sat, Oct 12, 2013 at 11:36 AM, cmsv <cmsv at wirelesspt.net> wrote:
>>>
>>>
>>>
>>> On 10/08/2013 05:47 AM, Pau wrote:
>>> > Another trick is to disable "opkg" since (probably) you are not gonna
>>> > use it if the flash memory is so small.
>>>
>>> I have thought about removing opkg but there are some optional packages
>>> that are provided and quite useful for certain situations. what other
>>> method could it be used to install a package ?
>>> wget get can fetch but what is the mechanism that is used by opkg ?
>>>
>>> for example removing
>>> [ ] Remove ipkg/opkg status data files in final images
>>> also helps but seems to break the possibility of installing an upgrade
>>> package or a package. Am i correct ?
>>>
>>> I also wondered if it is a good or bad idea to remove:
>>> [*] Compile the kernel with Debug FileSystem enabled
>>> > --
>>> > ./p4u
>>> >
>>> >
>>> > On Tue, Oct 8, 2013 at 11:39 AM, Bastian Bittorf
>>> > <bittorf at bluebottle.com> wrote:
>>> >> * cmsv <cmsv at wirelesspt.net> [08.10.2013 10:45]:
>>> >>> Total: 169.8 KB
>>> >>>
>>> >>> Does anyone uses, recommend or know about a smaller equivalent script
>>> >>> or
>>> >>> package ?
>>> >>
>>> >> there are a lot of things where can screw to get your image smaller.
>>> >>
>>> >> first do this:
>>> >> disbale debugging stuff in 'make menuconfig'
>>> >> -> Global build settings
>>> >> -> [ ] Compile the kernel with symbol table information
>>> done
>>> >>
>>> >> (you can even disable wireless-debug for your driver)
>>> Has been considered.
>>>
>>> >>
>>> >> additionally, ou can disable printk and swap, which saves ~100k:
>>> >>
>>> >> make kernel_menuconfig
>>> >> -> General setup
>>> >> [ ] Support for paging of anonymous memory (swap)
>>> done
>>> >> -> Configure standard kernel features (expert users)
>>> >> [ ] Enable support for printk
>>> done
>>> what exactly is printk most useful for ?
>>> >>
>>> >> let us know, if it helps. for 4mb routers, the image
>>> >> should not exceed 3.6mb
>>> right now and for my testing model:
>>> 3.8M openwrt-ar71xx-generic-dir-615-c1-squashfs-factory.bin
>>> 3.2M openwrt-ar71xx-generic-dir-615-c1-squashfs-sysupgrade.bin
>>> (includes some extra needed packages and scrips)
>>>
>>> What other things could be removed without hurting the needed
>>> functionality for a batman-adv atheros only based firmware with an
>>> average of 400mhz cpu, 32mb ram and 4 mb flash.
>>>
>>> Although the sysupgrade for my tetsing model is 3.2mb; for other
>>> brands/models it goes slightly bigger last time i checked.
>>>
>>> One other package that is using twice the size that it needs to use is
>>> wpad which i have to use if i want ad-hoc to function with psk
>>> encryption. I am not able to use the wpad-mini package which is half the
>>> size of wpad pad due to this:
>>>
>>> http://rooter.kyberian.net/tag/adhoc
>>>
>>> and batman-adv is not able to communicate with other nodes if the
>>> firmware uses wpad-mini.
>>>
>>> I believe that there might be a patch out there but unsure about it or
>>> if it has been added to AA.
>>>
>>>
>>> >>
>>> >> bye, bastian
>>> >> _______________________________________________
>>> >> Battlemesh mailing list
>>> >> Battlemesh at ml.ninux.org
>>> >> http://ml.ninux.org/mailman/listinfo/battlemesh
>>> > _______________________________________________
>>> > Battlemesh mailing list
>>> > Battlemesh at ml.ninux.org
>>> > http://ml.ninux.org/mailman/listinfo/battlemesh
>>> >
>>>
>>>
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>>>
>>
>>
>>
>> --
>> Ben West
>> http://gowasabi.net
>> ben at gowasabi.net
>> 314-246-9434
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-- 
Dave Täht

Fixing bufferbloat with cerowrt: http://www.teklibre.com/cerowrt/subscribe.html