RTI Core Libraries and Utilities

My NDDSHOME environment variable has a space in the path, why aren’t the shipped examples compiling?

If you are running into problems compiling the shipped examples or the generated Hello World example from rtiddsgen on a non-Windows platform, one of the first things to check is if your installation directory resides in a path that contains spaces. If it does, then the solution will be to redefine ...
erin
Fri, 05/29/2015 - 14:34
5534 reads — 0 comments

Why is the discovery phase taking so long on my Windows system?

Description The discovery phase in DDS applications can be considered a high throughput scenario under some circumstances. Some examples are: The applications have a lot of DDS entities. More than 2 hosts are involved. The type definitions are sent within the discovery packets (i.e., TypeCode and ...
Juanjo Martin
Thu, 05/28/2015 - 06:57
4891 reads — 1 comment

Modern C++ API code examples

The following examples demonstrate how to use the Modern C++ API: New! Flat Data and Zero Copy Latency (C++11) New! Flat Data API (C++11) Lambda Content Filter (C++11) Content Filtered Topic (C++03) Asynchronous Publisher (C++03) Batching and Turbo Mode (C++03) Builtin Topics (C++03) Listeners (C++ ...
alexc
Thu, 05/14/2015 - 15:31
8267 reads — 0 comments

DataReader's memory keeps growing when multiple DataWriters come up and go away in the system

In a scenario where multiple DataWriters come up and go away in the system, a matching DataReader application will experience a continual memory growth, this may be confused with a memory leak. This observed behavior is due to the fact that DataReader entities must maintain information about the ...
jmorales
Thu, 05/07/2015 - 16:36
3091 reads — 0 comments

Why does DDS communication stop after some time while using switches?

RTI Connext DDS uses multicast for the discovery process in the default setting. When a host needs to join a multicast group, the network stack of the host sends out an IGMP Membership Report message also known as the join message. These messages are forwarded through the LAN to the local IGMP ...
harish
Mon, 04/06/2015 - 14:53
3929 reads — 0 comments

What causes this error: "PRESParticipant_checkTransportInfoMatching:Warning: discovered remote participant 'yyyyy' using the 'shmem' transport with class ID 2"

Note: Applies to RTI Connext 5.2.0 and above. The following error: PRESParticipant_checkTransportInfoMatching:Warning: discovered remote participant 'yyyyy' using the 'shmem' transport with class ID 2. This class ID does not match the class ID 16777216 of the same transport in the local participant ...
belen
Wed, 03/25/2015 - 10:05
9186 reads — 7 comments

WaitSets: What can I do to reduce my CPU usage?

For high-rate data, the usage of a WaitSet may lead to a very high CPU usage if the WaitSet wakes up too often. By default, a WaitSet is created without any properties specified. In this case, the WaitSet wakes up immediately every time a trigger event occurs. However, "waking up" involves a ...
sonia
Wed, 01/28/2015 - 16:47
2927 reads — 0 comments

Why do I see a packet that starts by RTPX instead of RTPS?

Packets starting by RTPX are default domain discovery announcements. This is a new non-standard packet introduced in Connext 5.1.0 to help the tools discover applications running in other domains (for instance, RTI Admin Console). This packet is sent to the default multicast address and port for ...
Juanjo Martin
Tue, 01/20/2015 - 08:09
2199 reads — 0 comments

What causes this error: "COMMENDBeReaderService_onSubmessage:!get ber remoteWriter"

The following error during shutdown: COMMENDBeReaderService_onSubmessage:!get ber remoteWriter indicates that a DataReader has received a sample but the corresponding remote DataWriter has already been deleted. If you are shutting down your entire system, you can probably ignore this message. ...
belen
Thu, 01/08/2015 - 03:47
1611 reads — 0 comments

How can I reduce the discovery time?

For complex systems with hundreds of participants and endpoints, discovery may cause long startup times and high network utilization. There are several options that help increase discovery performance: 1) Reduce the size of discovery packets 1.1. You can configure the middleware to not send the ...
Juanjo Martin
Thu, 08/07/2014 - 03:00
5094 reads — 0 comments

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