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From Pierre-Arnaud Marcelot ...@marcelot.net>
Subject Re: Server performance improvements
Date Mon, 05 Aug 2013 07:41:34 GMT
Awesome!

Regards,
Pierre-Arnaud

On 3 août 2013, at 02:35, Emmanuel Lécharny <elecharny@gmail.com> wrote:

> Hi,
> 
> I applied one of the modifications I suggested in one of my previous
> mail : we pre-compte the set of candidates in the count() method, attach
> the set to the filter node (thanks god, we have a way to attach anything
> to the Node structure !) and use this set instead of constructing it
> again in the computeEquality() method. The gain is clear :
> 
> CoreSession
> ===========
> 
> Mavibot 10K entries
> -------------------
> Add : 80s, 125/s
> Search : 5091/s ---> 15000/s
> 
> Jdbm 10k entries
> ----------------
> Add : 167s, 59/s
> Search : 654/s --- 10009/s
> 
> 
> NetworkeSession
> ===============
> 
> Mavibot 10K entries
> -------------------
> Add : 85s, 117/s
> Search : 1802/s ---> 3467/s
> 
> Jdbm 10k entries
> ----------------
> Add : 176s, 56/s
> Search : 506/s --- 3009/s
> 
> That more than doubled the server's performance...
> 
> We have many more ways to improve the server... But still, this was a
> second easy improvement after the previous 45% gain !
> 
> Side note 1 : the old JDBM performances were horribly low. It seems
> really strange that we are now able to get 6 times better result. I will
> re-run the tests without my last change to see what I get.
> 
> Side note 2 : for the network tests, the cost of the encoding/decoding
> is high, and is paid twice (on the server and on the client). This is
> why we have much lower performances compared to the CoreSession tests.
> 
> -- 
> Regards,
> Cordialement,
> Emmanuel Lécharny
> www.iktek.com 
> 


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