[OpenWrt-Devel] latency on PPPoA ADSL Annex A on using Lantiq

[Mathias Kresin]

Am 10.08.2016 um 22:41 schrieb Daniel Niasoff:
> Hi Mathias,
>
>  ADSL works fine on chaos calmer and I cannot reproduce the issue, so it looks like it's a recently introduced issue.
>
> Thanks for the idea, it should make it easier to pinpoint
>
> Any idea's where the issue might be?

Nope, no idea yet. Might be a kernel update or something completely 
unexpected. Without knowing the commit that introduced the regression 
it's more or less crystal ball reading.

Using 'git bisect' it should be easy to identify the faulty commit. It 
has to be somewhere between the last commit before chaos calmer was 
branched (git hash 6c9b1a278e484a9c7c5ff36f91da90f725776d00) and HEAD.

git bisect tells me that you have to build and test circa 12 images to 
find the faulty commit:

git clone "https://github.com/openwrt/openwrt.git"
git checkout master
git bisect start HEAD 6c9b1a278e484a9c7c5ff36f91da90f725776d00
Bisecting: 1688 revisions left to test after this (roughly 11 steps)

It might be a good idea to verify that 
6c9b1a278e484a9c7c5ff36f91da90f725776d00 is not affected by the bug 
before starting the bisect.

Mathias
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