Re: freeing CORBA arguments
- From: Philip Lijnzaad <lijnzaad ebi ac uk>
- To: orbit-list gnome org
- Subject: Re: freeing CORBA arguments
- Date: Fri, 7 Sep 2001 16:28:17 +0100
> http://www.ois.com/technical/ORB_Performance_Enemies__Writing_Fast_IDL.pdf
Very interesting. One thing I doubt however:
One of the slides says that
typedef octet Data[3000000];
interface Image { void to(in Data x); };
would transmit faster than
struct Pixel { octet Red; octet Green; octet Blue; };
typedef Pixel Data[1000000];
interface Image { void to(in Data x); };
apart from the alignment issue (1 or perhaps 6 bytes per Pixel is wasted), I
don't think this is true. It might be true as far as the (de)marshalling code is
concerned, but the first solution must be (de)marshalled as well, so you
would probably incur the same cost, but this time hand-implemented.
Philip
--
Real programs don't eat cache (Malay)
-----------------------------------------------------------------------------
Philip Lijnzaad, lijnzaad@ebi.ac.uk \ European Bioinformatics Institute,rm A2-08
+44 (0)1223 49 4639 / Wellcome Trust Genome Campus, Hinxton
+44 (0)1223 49 4468 (fax) \ Cambridgeshire CB10 1SD, GREAT BRITAIN
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