performance

How can I improve my throughput performance on Linux?

One potential cause of poor performance on a Linux system is the amount of buffer space the RHEL 4u4 kernel uses to reassemble IP fragments. The parameters in /proc/sys/net/ipv4 control various aspects of the network, including a parameter that controlls the reassembly buffer size. ...
gianpiero
Thu, 01/17/2013 - 11:47
15545 reads — 0 comments

Should I combine my DataReaders under one Subscriber, or use separate Subscribers?

Note : Applies to RTI Connext 4.x and above. What is the trade-off between having one Subscriber with multiple DataReaders , versus multiple Subscribers that each have one DataReader ? Typically, an application will have one Subscriber with multiple DataReaders . If the DataReaders are set up to ...
juan
Thu, 01/17/2013 - 06:46
8399 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
11100 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
7885 reads — 0 comments

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