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Oracle Solaris Tunable Parameters Reference Manual     Oracle Solaris 10 1/13 Information Library
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Document Information

Preface

1.  Overview of Oracle Solaris System Tuning

2.  Oracle Solaris Kernel Tunable Parameters

3.  Oracle Solaris ZFS Tunable Parameters

4.  NFS Tunable Parameters

5.  Internet Protocol Suite Tunable Parameters

6.  System Facility Parameters

A.  Tunable Parameters Change History

Kernel Parameters

General Kernel and Memory Parameters (Oracle Solaris 10)

zfs_arc_min

zfs_arc_max

noexec_user_stack (Solaris 10 Releases)

lwp_default_stksize (Solaris 10 Releases)

Paging-Related Parameters

fastscan

Process-Sizing Tunables

ngroups_max (Solaris 10 Releases

max_nprocs (Solaris 10 Releases)

UFS Parameter

ufs_delete_hiwat

General Driver Parameter

ddi_msix_alloc_limit

General I/O Tunable Parameters

maxphys (Solaris 10 Releases)

fsflush and Related Parameters

dopageflush (Solaris 10 Releases)

Paging-Related Tunable Parameters

maxpgio (Solaris 10 Releases)

General File System Parameters

ncsize (Solaris 10 Release)

TMPFS Parameters

tmpfs:tmpfs_maxkmem (Solaris 10 Releases)

SPARC System Specific Parameters (Solaris 10 Releases)

default_tsb_size (Solaris 10 Releases)

enable_tsb_rss_sizing (Solaris 10 Releases)

tsb_rss_factor (Solaris 10 Releases)

NFS Tunable Parameters

nfs:nfs3_nra (Solaris 10 Releases)

TCP/IP Tunable Parameters

ip_forward_src_routed and ip6_forward_src_routed (Solaris 10 Releases)

ip_multidata_outbound (Solaris 10 Releases)

ip_squeue_fanout (Solaris 10 11/06 Release)

ip_squeue_worker_wait (Solaris 10 11/06 Release)

ip_soft_rings_cnt (Solaris 10 11/06 Release)

ip_squeue_write (Solaris 10 Releases)

tcp_local_dack_interval (Solaris 10 Releases)

[tcp,sctp,udp]_smallest_anon_port and [tcp,sctp,udp]_largest_anon_port

tcp_naglim_def (Solaris 10 Releases)

udp_do_checksum (Solaris 10 Releases)

Parameters That Are Obsolete or Have Been Removed (Oracle Solaris 10)

rstchown

System V Message Queue Parameters

msgsys:msginfo_msgmni

msgsys:msginfo_msgtql

msgsys:msginfo_msgmnb

msgsys:msginfo_msgssz

msgsys:msginfo_msgmap

msgsys:msginfo_msgseg

msgsys:msginfo_msgmax

System V Semaphore Parameters

semsys:seminfo_semmni

semsys:seminfo_semmsl

semsys:seminfo_semopm

semsys:seminfo_semmns

semsys:seminfo_semmnu

semsys:seminfo_semume

semsys:seminfo_semvmx

semsys:seminfo_semaem

System V Shared Memory Parameters

shmsys:shminfo_shmmni

shmsys:shminfo_shmmax

B.  Revision History for This Manual

Index

TCP/IP Tunable Parameters

ip_forward_src_routed and ip6_forward_src_routed (Solaris 10 Releases)

The default value of these parameters was incorrectly documented in previous Solaris 10 releases. The correct default value is disabled. For more information, see ip_forward_src_routed and ip6_forward_src_routed.

ip_multidata_outbound (Solaris 10 Releases)

This parameter was enhanced in the Solaris 10 release to deliver IP fragments in batches to the network driver. For more information, see ip_multidata_outbound.

ip_squeue_fanout (Solaris 10 11/06 Release)

Zone configuration information was added in the Solaris 10 8/07 release. For more information, see ip_squeue_fanout.

ip_squeue_worker_wait (Solaris 10 11/06 Release)

Zone configuration information was added in the Solaris 10 8/07 release. For more information, see ip_squeue_worker_wait In addition, this parameter was moved to TCP/IP Parameters Set in the /etc/system File.

ip_soft_rings_cnt (Solaris 10 11/06 Release)

Zone configuration information was added in the Solaris 10 8/07 release. For more information, see ip_soft_rings_cnt.

ip_squeue_write (Solaris 10 Releases)

This parameter was incorrectly documented in the Solaris 10 release. It has been removed.

tcp_local_dack_interval (Solaris 10 Releases)

The range of this parameter was incorrectly documented in previous Solaris releases. The correct range is 10 milliseconds to 1 minute.

[tcp,sctp,udp]_smallest_anon_port and [tcp,sctp,udp]_largest_anon_port

These parameters are newly documented in the Solaris 10 8/11 release.

tcp_naglim_def (Solaris 10 Releases)

The tcp_naglim_def parameter is newly documented in the Solaris 10 8/11 release.

udp_do_checksum (Solaris 10 Releases)

The udp_do_checksum parameter is newly documented in the Solaris 10 8/11 release.