Minimum TAO
We have added support for the new minimumCORBA specification to TAO. The minimumCORBA specification removes the following features from the CORBA 2.2 specification.
To minimize the footprint of TAO, we first configure ACE to support only those components that are required by TAO. Secondly, we configure TAO to only support the components specified by the minimumCORBA specification. The following two tables show the footprint reduction achieved. Note that the IDL Compiler column refers to the code required to collaborate between the IDL compiler and the ORB, and not to the code for the IDL compiler itself.
Note: All measurement are for ACE 5.0 and TAO 1.0 using
egcs-2.91.60 on SunOS5.7
Make options used were:
debug=0 optimize=1 static_libs_only=1 DEFFLAGS=-DACE_USE_RCSID=0
The above make options translate into:
(a) No debugging,
(b) Optimization is set to -O2,
(c) Static ACE and TAO libraries, and
(d) Use of RCS Ids is turned off.
Configuration | Component | Total | OS | Utils | Logging | Threads | Demux | Connection | Sockets | IPC | Svcconf | Streams | Memory | Token | Other |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
ACE (all components) | Size, bytes | 709.5 | 11.9 | 115.3 | 13.7 | 63.0 | 88.0 | 68.6 | 16.9 | 43.0 | 99.8 | 21.4 | 29.2 | 76.0 | 62.9 |
Percentage of total size | 100 | 1.7 | 16.2 | 1.9 | 8.9 | 12.4 | 9.7 | 2.4 | 6.0 | 14.1 | 3.0 | 4.1 | 10.7 | 8.9 | |
ACE (TAO components) | Size, bytes | 570.7 | 11.9 | 115.3 | 13.7 | 63.0 | 88.0 | 68.6 | 16.9 | 43.0 | 99.8 | 21.4 | 29.2 | 0 | 0 |
Percentage of total size | 100 | 2.1 | 20.2 | 2.4 | 11.0 | 15.4 | 12.0 | 3.0 | 7.5 | 17.5 | 3.7 | 5.1 | 0 | 0 | |
Reduction | % | 19.6 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 100 | 100 |
Configuration | Component | Total | POA | Pluggable Protocols | Default Resources | Interpretive Marshaling | IDL Compiler | ORB Core | Dynamic Any |
---|---|---|---|---|---|---|---|---|---|
Complete TAO | Size, Kbytes | 1617.2 | 412.5 | 281.0 | 32.1 | 73.4 | 10.7 | 595.2 | 212.3 |
Percentage of total size | 100 | 25.5 | 17.4 | 2.0 | 4.5 | 0.7 | 36.8 | 13.1 | |
Minimum TAO | Size, Kbytes | 1359.2 | 376.2 | 281.0 | 32.1 | 73.4 | 10.7 | 585.5 | 0.0 |
Percentage of total size | 100 | 27.7 | 20.7 | 2.4 | 5.4 | 0.8 | 43.1 | 0.0 | |
Reduction | % | 16.0 | 8.8 | 0 | 0 | 0 | 0 | 1.6 | 100 |