RTI Core Libraries and Utilities

Why is my application unable to add a multicast address?

Note: Applies to NDDS 3.x, RTI Connext 4.x and above. Many operating systems, including Linux, limit the number of multicast group memberships that a machine can belong to simultaneously. (A "multicast group membership" indicates that a machine is listening to messages for a specific multicast IP ...
Fernando Garcia
Mon, 01/14/2013 - 07:58
16976 reads — 0 comments

Why don't I receive data when using a large data type (over 1400 bytes) on a Windows system?

Note: This entry applies to Windows systems only. If you are sending data larger than 1400 bytes, and the subscriber is not receiving any data, make sure winsock32.lib is NOT in the list of libraries included in your project. There are two different socket libraries on Windows systems: winsock32. ...
Fernando Garcia
Mon, 01/14/2013 - 07:47
4015 reads — 0 comments

Which QoS parameters are important to tune for throughput testing?

Note: Applies to RTI Connext 4.x and above. An example throughput test is provided in NDDSHOME/example/[CPP or Java]/performance/throughput. The most common problem encountered in performance testing is a publisher that is sending too fast for the receiver to process. Symptoms of this include a ...
Fernando Garcia
Mon, 01/14/2013 - 07:24
11779 reads — 0 comments

Why do I get a Java 'out of memory' error from rtiddsgen when using a large data type?

Note: Applies to RTI Connext 4.x and above. If your IDL file defines a large data type and rtiddsgen reports an "out of memory" error, increasing the Java heap memory may help. To do this, open $NDDSHOME/scripts/rtiddsgen with an editor of your choice and add -X options (see below) to the last line ...
Fernando Garcia
Mon, 01/14/2013 - 03:16
4282 reads — 0 comments

What causes a "RTIOsapiSharedMemoryMutex_create:OS semget() failure, error 0X1C" error message?

Note: Applies to RTI Connext 4.x. Problem Sometimes when you start your RTI Connext application, you get the following error: [D0037|ENABLE]RTIOsapiSharedMemoryMutex_create:OS semget() failure, error 0X1C [D0037|ENABLE]NDDS_Transport_Shmem_create_recvresource_rrEA:failed to initialize shared memory ...
Fernando Garcia
Mon, 01/14/2013 - 02:24
8417 reads — 0 comments

What is the maximum number of participants per domain?

Applies to RTI Connext 4.x and above With default settings, the maximum number of domains and participants in the same machine is limited as follows: Versions 4.1e and lower: 100 domains (0 .. 99) and 58 participants (0 .. 57) per domain on the same machine when the domain ID is 0. Version 4.2e and ...
Fernando Garcia
Mon, 01/14/2013 - 02:07
28390 reads — 3 comments

What causes 'PRESPsReaderQueue_storeQueueEntry:!deserialize' messages?

Note: Applies to RTI Connext 4.x and above. If the publisher and subscriber applications use different data-type definitions (IDL) for the same topic, it is common to see the following messages reported by the RTI middleware: Prior to 4.4c Unkeyed Data PRESPsReaderQueue_storeQueueEntry:!deserialize ...
Fernando Garcia
Fri, 01/11/2013 - 08:39
10016 reads — 2 comments

Why do I see MIGGeneratorSample_setParameterLength() errors with RTI Data Distribution Service 4.1f?

Note: Applies to RTI Data Distribution Service 4.1f. MIGGeneratorSample_setParameterLength() error messages are caused by a bug when RTPS GAP messages are NACKed by a reliable reader. This error can result in memory corruption. DataWriters issue RTPS GAP messages to indicate that samples are no ...
Fernando Garcia
Fri, 01/11/2013 - 08:05
2718 reads — 0 comments

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