[CFT] modular kernel config

Łukasz Wąsikowski lukasz at wasikowski.net
Tue Feb 28 21:56:33 UTC 2012

W dniu 2012-02-28 22:22, Arnaud Lacombe pisze:

>>>> FLOWTABLE on 8.x crashed BGP routers (kern/144917).
>>> no crash dump, no backtrace, no follow-up whatsoever after 1 year and
>>> 2 years, what's your points ? You could really have chosen a better PR
>>> to back up your argument...
>> Sorry, but I don't want to bug trace this issue, simply because lack of
>> time, resources and interest in this feature. I've run into this bug on
>> production box, went through hell because of it and turned off flowtable
>> which I do not use and not need. If this problem is still alive (it
>> might be, the PR I've mentioned is still open) then it's not a good idea
>> to turn on this feature by default. If you're interested in using this
>> feature then feel free to debug and test.
> Give me a deterministic way to reproduce the issue and I will.

Enable FLOWTABLES in kernel and setup BGP4+ router (with net/quagga).
You need three peers sending you full Internet routing table (3x400k
prefixes). Some people got it with only two peers. After a short while
your CPU should stuck in 100% busy.

best regards,
Lukasz Wasikowski

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