EF_TCP_BACKLOG_MAX - EF_TCP_BACKLOG_MAX - UG1586

Onload User Guide (UG1586)

Document ID
UG1586
Release Date
2026-01-22
Revision
1.4 English
Name
tcp_backlog_max
Default
256
Scope
per-stack

Places an upper limit on the number of embryonic (half-open) connections for one listening socket. See also EF_TCP_SYNRECV_MAX.

The value from /proc/sys/net/ipv4/tcp_max_syn_backlog is used by default.