Re: [boost] [gil][io_ew] performance test

Subject: Re: [boost] [gil][io_ew] performance test
From: Mateusz Loskot (mateusz_at_[hidden])
Date: 2010-12-15 19:17:44

On 15/12/10 23:46, Christian Henning wrote:
> Hi there, I did a little update to include more files. Now I have
> 26580 jpeg files distributed over 10 folders. I also tried to reduce
> the number of image memory allocation by reusing the same image over
> and over again. The new code can be found here:
> http://pastebin.com/B8R1MuCs
> 
> I run each backend three times. Here are the results:
> 
> IO2:
> 1. 30.975 sec
> 2. 29.894 sec
> 3. 25.595 sec
> 
> io_new:
> 1. 33.086 sec
> 2. 28.223 sec
> 3. 28.867 sec
> 
> So far, I have changed any code inside my backend ( io_new ). The next
> step is to profile.

It looks very good.
I'm going to run this benchmark on Linux over the weekend.
In the meantime, I'm caching your test program at my Git repo;

https://github.com/mloskot/workshop/tree/master/benchmarking/tiling/gil/io_new

Cheers,
-- 
Mateusz Loskot, http://mateusz.loskot.net
Charter Member of OSGeo, http://osgeo.org
Member of ACCU, http://accu.org