Commstime on embedded Java from Esmertec

[oyvind.teig@xxxxxxxxxxxx]

Sirs

We have contact with Esmertec (http://www.esmertec.com) after
visiting the Embedded Systems 2001 in Nurnberg.

Esmertec (co: Sjur Vestli: svestli@xxxxxxxxxxxx) is running
JCSP on their embedded Java targets. It runs compiled and linked
Java under their own integrated RTOS. Two boards have been tested
with "commstime". Here are the results, as received from Vestli.

Sjur Vestli adds "It probably would produce the same results
when dynamically loaded (using esmertec's Target Bytecode
Compiler), not (yet) tested."

Jbed 1.3.8
----------

PowerPC
=======

   Hardware:
     EmbeddedPlanet Rpx Lite PowerPC 823 at 66 MHz
     16 MByte RAM, 8 MByte FLASH (www.embeddedplanet.com)
   Runnable: compiled & linked
   JVM: Jbed (www.esmertec.com)

   Results:
   Test of communication between JCSP processes
   ..
   Now using the JCSP library (phw/pda1)

   last number received = 10999
      1743 microseconds / iteration
      435 microseconds / communication
      217 microseconds / context switch

StrongArm
=========

   Hardware:
     Intel StrongARM SA 1110 at 206 MHz
     (Assabet board:

   http://developer.intel.com/design/strong/quicklist/eval-plat/sa-1110.htm
   )
   Runnable: compiled and linked
   JVM: Jbed (www.esmertec.com)

   Results:
   Test of communication between JCSP processes
   ..
   Now using the JCSP library (phw/pda1)

   10000 loops ...

   warming up ... last number received = 999
   1000 cycles completed ... timing now starting ...
   last number received = 10999
      116 microseconds / iteration
      29 microseconds / communication
      14 microseconds / context switch
   ..
   last number received = 1020999
      116 microseconds / iteration
      29 microseconds / communication
      14 microseconds / context switch

--

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Øyvind
--
@ Oyvind Teig
@ Kongsberg Maritime Ship Systems, Ship Control, 7005 Trondheim Norway
@ oyvind.teig@xxxxxxxxxxxx
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