Re: [eclipse-clp-users] Slow OutOfProcessEclipse under Unix/Linux

Martin Wegner wrote:
> Hello,
> 
> I'm a student and work on a project that uses eclipse prolog with
> OutOfProcessEclipse and Java.
> 
> Now I observe that OutOfProcessEclipse is very very slow under Unix/Linux :(
> 
> I wrote a little benchmark-programm and with Windows XP 32 bit I can
> play 14000 games in 60 seconds.
> 
> On the same computer (only 1,86 GHz) with Linux 32 bit I can only play
> 5000-6000 games in 60 seconds.
> 
> With EmbeddedEclipse Linux is fast as Windows.
> 
> And on a server with Unix 64 bit (3,4 GHz) I can only play 7000 games in
> 60 seconds.
> 
> Can you fix this bug?
> 
> Thank you!
> 
> Greetings, Martin
> 
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Hi Martin,

Can you give more information on what you are doing? The communication 
(peer queues) between Java and a OutOfProcessEclipse is via sockets, 
which is relatively slow and also seem to have a relatively large 
overhead for each transmission of data. The EmbeddedEclipse communicates
via in-memory queues, and is much more efficient.

ECLiPSe itself should run at the same speed for both, as long as you are 
running ECLiPSe code and not sending/receiving data via the queues.

Cheers,

Kish

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