Oracle Solaris Tunable Parameters Reference Manual

tcp_deferred_ack_interval

Description

Specifies the time-out value for the TCP-delayed acknowledgment (ACK) timer for hosts that are not directly connected.

Refer to RFC 1122, 4.2.3.2.

Default

100 milliseconds

Range

1 millisecond to 1 minute

Dynamic?

Yes

When to Change

Do not increase this value to more than 500 milliseconds.

Increase the value under the following circumstances:

  • Slow network links (less than 57.6 Kbps) with greater than 512 bytes maximum segment size (MSS)

  • The interval for receiving more than one TCP segment is short

Commitment Level

Unstable