- Name
-
tcp_isn_mode - Default
-
clocked+cache - Scope
- per-stack
Selects behavior with which Onload interacts with peers when reusing four-tuples:
-
clocked– Linux compatible behavior (default) -
clocked+cache– additional cache to avoid failed connection attempts.Note: The behavior is relevant to high connection rate use cases with high outgoing data rates.
When in clocked+cache mode, sequence numbers used by closed TCP connections are remembered so that initial sequence numbers for subsequent uses of the same four-tuple can be selected so as not to overlap with the previous connection’s sequence space.