JavaScript is required to for searching.
Skip Navigation Links
Exit Print View
Oracle Solaris Tunable Parameters Reference Manual     Oracle Solaris 11 Express 11/10
search filter icon
search icon

Document Information

Preface

1.  Overview of Oracle Solaris System Tuning

2.  Oracle Solaris Kernel Tunable Parameters

3.  NFS Tunable Parameters

4.  Internet Protocol Suite Tunable Parameters

Where to Find Tunable Parameter Information

Overview of Tuning IP Suite Parameters

IP Suite Parameter Validation

Internet Request for Comments (RFCs)

IP Tunable Parameters

_icmp_err_interval and _icmp_err_burst

_respond_to_echo_broadcast

_addrs_per_if

ip_squeue_fanout

TCP Tunable Parameters

_deferred_ack_interval

_local_dack_interval

_deferred_acks_max

_local_dacks_max

_wscale_always

_tstamp_always

send_maxbuf

recv_maxbuf

_max_buf

_cwnd_max

_slow_start_initial

_slow_start_after_idle

sack

_rev_src_routes

_time_wait_interval

ecn

_conn_req_max_q

_conn_req_max_q0

_conn_req_min

_rst_sent_rate_enabled

_rst_sent_rate

TCP/IP Parameters Set in the /etc/system File

ipcl_conn_hash_size

ip_squeue_worker_wait

TCP Parameters With Additional Cautions

_keepalive_interval

_ip_abort_interval

_rexmit_interval_initial

_rexmit_interval_max

_rexmit_interval_min

_rexmit_interval_extra

_tstamp_if_wscale

_recv_hiwat_minmss

UDP Tunable Parameters

send_maxbuf

recv_maxbuf

IPQoS Tunable Parameter

_policy_mask

SCTP Tunable Parameters

_max_init_retr

_pa_max_retr

_pp_max_retr

_cwnd_max

_ipv4_ttl

_heartbeat_interval

_new_secret_interval

_initial_mtu

_deferred_ack_interval

_ignore_path_mtu

_initial_ssthresh

_max_buf

_ipv6_hoplimit

_rto_min

_rto_max

_rto_initial

_cookie_life

_max_in_streams

_initial_out_streams

_shutack_wait_bound

_maxburst

_addip_enabled

_prsctp_enabled

Per-Route Metrics

5.  Network Cache and Accelerator Tunable Parameters

6.  System Facility Parameters

A.  Tunable Parameters Change History

B.  Revision History for This Manual

Index

UDP Tunable Parameters

send_maxbuf

Description

Defines the default maximum UDP socket datagram size. .

Default

57,344 bytes

Range

1,024 to 1,073,741,824 bytes

Dynamic?

Yes

When to Change

Note that an application can use setsockopt(3XNET) SO_SNDBUF to change the size for an individual socket. In general, you do not need to change the default value.

Commitment Level

Unstable

recv_maxbuf

Description

Defines the default maximum UDP socket receive buffer size.

Default

57,344 bytes

Range

128 to 1,073,741,824 bytes

Dynamic?

Yes

When to Change

Note that an application can use setsockopt(3XNET) SO_RCVBUF to change the size for an individual socket. In general, you do not need to change the default value.

Commitment Level

Unstable