2 id: channel-buffering-schemes
5 In the user space tracing domain, two **buffering schemes** are
6 available when creating a channel:
8 * **Per-PID buffering**: keep one ring buffer per process.
9 * **Per-UID buffering**: keep one ring buffer for all processes of
12 The per-PID buffering scheme consumes more memory than the per-UID
13 option if more than one process is instrumented for LTTng-UST. However,
14 per-PID buffering ensures that one process having a high event
15 throughput won't fill all the shared sub-buffers, only its own.
17 The Linux kernel tracing domain only has one available buffering scheme
18 which is to use a single ring buffer for the whole system.