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Today's Topics:
1. Re: Good news and bad news (Francis Dupont)
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Message: 1
Date: Mon, 03 Dec 2018 16:20:42 +0000
From: Francis Dupont <[email protected]>
To: Thomas Markwalder <[email protected]>
Cc: Francis Dupont <[email protected]>, Kea Dev List
<[email protected]>
Subject: Re: [kea-dev] Good news and bad news
Message-ID: <[email protected]>
Content-Type: text/plain; charset="us-ascii"
Thomas Markwalder writes:
> On 11/30/18 7:12 AM, Francis Dupont wrote:
> > It is a known defect
> And where is it written down?
=> nowhere I am afraid...
> > and the fact it was not reproduce in the threaded
> > receiver is not an accident.
>
> Nor did I suggest that it was, well done for doing it that way, Francis.
=> I tried to write code which is more fair (easy at the original is
not fair at all...). I remember to have taken a short time to see how
to organize the loop the best way.
> > Note in the real world it should not happen
> > or with other words do not expect an overloaded server to perform well.
>
> It can happen in the real world, and I suspect the more interfaces one
> has the worse it becomes.
=> linear list is already an issue when you have a lot of interfaces.
I saw some kernel code to be heavily modified for this reason so it is
something which can happen for Kea. Note the select vs poll/kqueue
tradeoff is of the same kind: select does not scale.
> and while the starvation was not as pronounced, it is still present:
not fair => someone is starving...
I don't know if we received complains about this issue?
Regards
Francis Dupont <[email protected]>
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