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It is possible to use opensplice shared memory config within the system, but unfortunately only with their commercial offering.

There are some good numbers posted here about a few of the common dds implementations performances:

https://discourse.ros.org/t/is-there-any-dds-implementation-using-shared-memory-inside-system/7609/18

cwyark posts some performance comparisons of opensplice shared memory vs non-shared memory on that thread. There >2x latency improvement with shared memory in hist tests.

It is possible to use opensplice shared memory config within the system, but unfortunately atleast with the dashing release. This feature is only available with their the commercial offering.offering of opensplice.

There are some good numbers posted here about a few of the common dds implementations performances:

https://discourse.ros.org/t/is-there-any-dds-implementation-using-shared-memory-inside-system/7609/18

cwyark posts some performance comparisons of opensplice shared memory vs non-shared memory on that thread. There >2x latency improvement with shared memory in hist tests. tests.