[Olsr-dev] Freifunk Testing

Sven-Ola Tuecke (spam-protected)
Mon Jun 16 15:37:14 CEST 2008


oh-no. That webcam ist notorical slow in terms of bogomips. 1/10 of a WRT. 
Not hysterical <ggg>

// Sven-Ola

----- Original Message ----- 
From: "Hannes Gredler" <(spam-protected)>
To: "elektra" <(spam-protected)>
Cc: <(spam-protected)>
Sent: Monday, June 16, 2008 2:45 PM
Subject: Re: [Olsr-dev] Freifunk Testing

> elektra wrote:
>> Henning Rogge wrote:
>>> Fish-Eye algorithms are used to keep the traffic low, but they
>>> introduce ADDITIONAL possibilities for routing loops (at the edge of
>>> the fish-eye domains). So it's a tradeof between traffic problems and
>>> routing update problems.
>> Highly unlikely, because fish-eye domains overlap. Loops occur amongst
>> adjacent nodes, usually involving two or three nodes. Go ahead and
>> experiment - disable Fisheye and reduce MPRs redundancy  to a value
>> where it is actually doing something - in a large scale deployment such
>> as Vienna, and observe the results.
> i strongly disagree:
> fisheye may work on a WLAN only meshes, however in mixed deployments
> (read: 5Ghz longshots bypassing 3-5 hops, or wired segments) it becomes
> actually a main contributor of routing-loops.
> we have long-term plans to disable fisheye support per default and rather
> spend the bandwidth, for reliably resyncing the 1-hop neighborhood.
>> Our recent tests have been performed on 800 MHz x86 CPUs in a 49 node
>> grid, at 1-3 % CPU load.
> olsrd load running on a 250 node 1300 MHz x86 CPU is not measurable 
> (0.0%).
>   throttling down the CPU by a factor of 8, you see rare peaks of 2-3% CPU
>   load. ask sven-ola about his hysterical underpowered webcam :-P
> /hannes
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