once.
* Create a user space channel with a given buffering scheme
(option:--buffers-uid or option:--buffers-pid options) and create a
second user space channel with a different buffering scheme in the
once.
* Create a user space channel with a given buffering scheme
(option:--buffers-uid or option:--buffers-pid options) and create a
second user space channel with a different buffering scheme in the