[Benchmarking] Ideas for next year

[Dane Springmeyer]

On Sep 16, 2011, at 11:23 PM, Iván Sánchez Ortega wrote:

> Hi all,
> 
> During some beers at the Wynkoop, I had an idea that I think is worth sharing.
> 
> Until now, the results focus on throughtput per number of concurrent requests. 
> This is fine, but other metrics are possible.
> 
> Then, I heard that Mapnik excels at requests with few vector features, while 
> Mapserver does a very good job when there are many vector features to be 
> rendered.

Mapnik does not do any line simplification or, until yesterday, even attempt to clip geometries. I think getting clipping working better and implementing simplification will help quite a bit. Running oprofile on mapnik reveals that (other than zlib) the functions most in use is are agg line rendering functions.

> 
> You can guess where this goes. I will propose that, for next year (years?), 
> requests should be classified into groups depending on the number of features 
> contained in that extent. e.g. requests with <10 feats, 10-50, 50-100, 
> 100-500, >500. Measure latency/throughput for every group, put the results in 
> a graph.
> 
> 
> 
> I don't know if this is feasible. Anyway, will see you tomorrow at the Code 
> Sprint,
> -- 
> Iván Sánchez Ortega <ivan at sanchezortega.es>
> 
> Un ordenador no es una televisión ni un microondas: es una herramienta 
> compleja.
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