RTI Core Libraries and Utilities

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
2563 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
1854 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
1385 reads — 0 comments

How can I reduce the discovery traffic?

For complex systems, discovery may take a big percentage of the available bandwidth in the network when some of the hosts are rebooted. There are several options that help reducing the impact of discovery in these systems: 1) Reduce the size of discovery packets You can configure the middleware to ...
Juanjo Martin
Thu, 08/07/2014 - 03:00
4333 reads — 0 comments

What error can occur if a thread stack_size is not large enough?

If you create a large number of instances or entities and there is insufficient thread stack space, you can get the following error: REDAFastBufferPool_getBuffer:!precondition: pool==((void *)0) REDASkiplistNode_new:!create node REDASkiplist_assertNodeEA:!create node ...
bobby
Thu, 07/24/2014 - 23:27
2108 reads — 0 comments

I Put My Machines In My Initial Peers Lists -- Why Don’t They Discover Each Other?

There are some situations in which two applications, even though they have been configured to have each other in their initial peers lists, will not discover each other. Two applications are on the same machine and have only either 127.0.0.1 or "localhost" in their initial peers lists AND ...
erin
Mon, 07/07/2014 - 14:26
4448 reads — 0 comments

RTI Connext DDS and the OpenSSL Heartbleed Bug

Note: This solution applies to RTI Connext DDS 5.1.0. The Heartbleed bug, which causes a serious security threat, has been recently identified in certain versions of the OpenSSL cryptographic software library. More information about the bug can be found at www.heartbleed.com . OpenSSL is used for ...
bobby
Mon, 04/28/2014 - 16:47
1981 reads — 0 comments

On VxWorks, an RTP application can not discover a kernel application over shared memory

When running two applications on the same WindRiver VxWorks target, one in kernel mode and the other in RTP mode, the two applications will not discover each other when using out of box settings in RTI Connext. The reason this occurs has to do with how RTI Connext internally marks the individual ...
bobby
Fri, 04/04/2014 - 14:05
2992 reads — 0 comments

Failure to Create a Participant due to Insufficient Shared Memory Kernel Settings

If you are running RTI Connext DDS 5.1.0 or earlier, you may get this error message when starting your application: [D0061|ENABLE]NDDS_Transport_Shmem_create_recvresource_rrEA:failed to initialize shared memory resource segment for key 0x405971 [D0061|ENABLE] ...
jmorales
Tue, 04/01/2014 - 13:53
7886 reads — 0 comments

Resources are not cleaned up when write() is called from a spawned thread

If the logic of your application requires to spawn new threads, and in those threads you are calling a DDS API such as write() , you may notice a memory growth. To ensure that all the resources allocated in that thread are correctly released, remember to call unregister_thread() right before ...
gianpiero
Fri, 03/14/2014 - 08:17
2198 reads — 0 comments

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