TCPKEEPINTVL
TCPKEEPINTVL is a TCP (Transmission Control Protocol) kernel parameter that controls the interval between successive keepalive probes. When a TCP connection is established, it can optionally be configured to send keepalive probes. These probes are small packets sent to the remote host to verify that the connection is still active. If the remote host does not respond to a keepalive probe within a certain time, the connection is considered to be broken.
The TCPKEEPINTVL parameter specifically determines how long the system waits between sending these probes. For example,
Adjusting TCPKEEPINTVL can be useful in situations where network latency is high or connections are expected