Appendix B Revision History for This Manual

This section describes the revision history for this manual.

• Current Version: Solaris 10 10/09 Release

• New or Changed Parameters in the Solaris 10 Release

• New or Changed Parameters in the Solaris 9 Releases

• New Parameters in the Solaris 8 Release

Current Version: Solaris 10 10/09 Release

The current version of this manual applies to the Solaris 10 10/09 release.

New or Changed Parameters in the Solaris Release

The following sections describe new, changed, or obsolete kernel tunables.

• Solaris 10 10/09: This release includes the zfs_arc_min and zfs_arc_max parameter descriptions. For more information, see zfs_arc_min and zfs_arc_max.

• Solaris 10 10/09: This release includes the ddi_msix_alloc_limit parameter that can be used to increase the number of MSI-X interrupts that a device instance can allocate. For more information, see ddi_msix_alloc_limit.

• Solaris 10 5/09: This release includes corrected range information for the tcp_local_dack_interval parameter. For more information, see tcp_local_dack_interval.

• Solaris 10 10/08: The Solaris 10 version of this manual inadvertently included the nfs4_shrinkreaddir parameter information. This parameter is not available.

• Solaris 10 10/08: For information about tuning ZFS file systems, see the following site:

  http://www.solarisinternals.com/wiki/index.php/ZFS_Evil_Tuning_Guide

• Solaris 10 5/08: Memory locality group parameters will be provided in a Solaris 10 5/08 kernel patch. For more information about these parameters, see Locality Group Parameters.

• Solaris 10 5/08: The Solaris 10 version of this manual inadvertently included the nfs4_dynamic parameter information. This parameter is not available.

• Solaris 10 5/08: The translation storage buffers parameters in the sun4u or sun4v Specific Parameters section are being revised to provide better information. In this release, the following parameters have changed:

  • default_tsb_size – The default text has been clarified.

  • enable_tsb_rss_sizing – The default text was incorrect and has been corrected.

  • tsb_rss_factor – The example section referred to percentages rather than the more appropriate parameter units. This issue has been resolved.

• Solaris 10 5/08: The Solaris 10 version of this manual inadvertently included the tcp_keepalive_abort_interval parameter information. This parameter is only available in the Solaris Express release.

• Solaris 10 8/07: Parameter information was updated to include sun4v systems. For more information, see the following references:

  • maxphys

  • tmpfs:tmpfs_maxkmem

  • sun4u or sun4v Specific Parameters

• Solaris 10 8/07: The range value for the maxpgio parameter information that was previously published in this book was incorrect. For more information, see maxpgio.

• Solaris 10 8/07: For information about changes to parameters that can only be changed in the global zone, see What's New in Solaris System Tuning?

• Solaris 10 8/07: The ip_squeue_write parameter information that was previously published in this book was incorrect and has been removed.

• Solaris 10 11/06: The default value of ncsize parameter was incorrectly documented in the Solaris 10 release. For more information, see ncsize.

• Solaris 10 11/06: The default value of nfs:nfs3_nra parameter was incorrectly documented in the Solaris 10 release. The default value is 4. For more information, see nfs:nfs3_nra.

• Solaris 10 6/06: The ip_squeue_fanout parameter has been modified. For more information, see ip_squeue_fanout.

• Solaris 10 6/06: The sq_max_size parameter was incorrectly documented in the Solaris 10 release. The default value is 10000 messages. For more information, see sq_max_size.

• Solaris 10 6/06: The default value of the logevent_max_q_sz parameter changed from 2000 events to 5000 events. For more information, see logevent_max_q_sz.

• Solaris 10 6/06: The lwp_default_stksize parameter was incorrectly documented in the Solaris 10 release. The default value for SPARC systems is 24,576. For more information, see lwp_default_stksize.

• Solaris 10 6/06: The ip_multidata_outbound parameter has been enhanced. For more information, see ip_multidata_outbound.

• Solaris 10 6/06: The default value of the ip_forward_src_routed and ip6_forward_src_routed parameters was incorrectly documented in the Solaris 9 and Solaris 10 releases. The correct default value is disabled. For more information, see ip_forward_src_routed and ip6_forward_src_routed.

• Solaris 10 6/06: The default values and ranges of the UDP parameters changed in the Solaris 10 release. The new values were previously undocumented. For more information about the new values, see UDP Tunable Parameters.

• Solaris 10 6/06: The sq_max_size parameter was incorrectly documented in the Solaris 10 release. The default value is 10000 messages. For more information, see sq_max_size.

New or Changed Parameters in the Solaris 10 Release

The following sections describe new, changed, or obsolete kernel tunables.

Solaris Kernel Tunable Parameters

General Kernel and Memory Parameters

The parameter, default_stksize, is new in the Solaris 10 release.

The lwp_default_stksize and noexec_user_stack parameters are changed in this release.

UFS

The following parameters are modified in the Solaris 10 release:

• bufhwm and bufhwm_pct

• ncsize

General File System

The following parameters are newly documented in the Solaris 10 release:

• freebehind

• segmap_percent

• smallfile

System V Message Queues

The following parameters have been removed in the Solaris 10 release:

• msgsys:msginfo_msgmap

• msgsys:msginfo_msgmax

• msgsys:msginfo_msgseg

• msgsys:msginfo_msgssz

The following parameters are obsolete as of the Solaris 10 release:

• msgsys:msginfo_msgmnb

• msgsys:msginfo_msgmni

• msgsys:msginfo_msgtql

System V Semaphores

The following parameters have been removed in the Solaris 10 release:

• semsys:seminfo_semmaem

• semsys:seminfo_semmap

• semsys:seminfo_semmns

• semsys:seminfo_semmnu

• semsys:seminfo_semvmx

• semsys:seminfo_semume

• semsys:seminfo_semusz

System V Shared Memory

The following parameters have been removed from the Solaris 10 release:

• shmsys:shminfo_shmmin

• shmsys:shminfo_shmseg

The following parameters are obsolete.

• shmsys:shminfo_shmmni

• shmsys:shminfo_shmmax

TSB Parameters

The following TSB parameters are new in the Solaris 10 release:

• tsb_alloc_hiwater_factor

• default_tsb_size

• enable_tsb_rss_sizing

• tsb_rss_factor

NFS Parameters

The stability level of all NFS parameters was changed from “Evolving” to “Unstable.”

The following NFSv4 parameters are new in the Solaris 10 release:

• nfs:nfs4_async_clusters

• nfs:nfs4_bsize

• nfs:nfs4_cots_timeo

• nfs:nfs4_do_symlink_cache

• nfs:nfs4_lookup_neg_cache

• nfs:nfs4_max_threads

• nfs:nfs4_max_transfer_size

• nfs:nfs4_nra

• nfs:nfs4_pathconf_disable_cache

The following NFS parameters are new or changed in the Solaris 10 release:

• nfs:nfs_nra

• nfs:nfs3_nra

• nfs:nfs3_shrinkreaddir

The following NFS parameters were previously provided in error and have been removed:

• nfsserv:nfs_shrinkreaddir

• nfsserv:nfs3_shrinkreaddir

TCP/IP Parameters

The following IP parameters are new in the Solaris 10 release:

• ip_squeue_worker_wait

• ip_squeue_fanout

• ipcl_conn_hash_size

The following TCP parameters are new in this Solaris release:

• tcp_rst_sent_rate_enabled

• tcp_rst_sent_rate

• tcp_mdt_max_pbufs

The following TCP/IP parameters are obsolete in the Solaris 10 release:

• tcp_conn_hash_size

• ipc_tcp_conn_hash_size

• tcp_compression_enabled

• ip_forwarding

• ip6_forwarding

• xxx_forwarding

SCTP Tunable Parameters

The following SCTP parameters are new in the Solaris 10 release:

• sctp_max_init_retr

• sctp_pa_max_retr

• sctp_pp_max_retr

• sctp_cwnd_max

• sctp_ipv4_ttl

• sctp_heartbeat_interval

• sctp_new_secret_interval

• sctp_initial_mtu

• sctp_deferred_ack_interval

• sctp_ignore_path_mtu

• sctp_initial_ssthresh

• sctp_xmit_hiwat

• sctp_xmit_lowat

• sctp_recv_hiwat

• sctp_max_buf

• sctp_ipv6_hoplimit

• sctp_rto_min

• sctp_rto_max

• sctp_rto_initial

• sctp_cookie_life

• sctp_max_in_streams

• sctp_initial_out_streams

• sctp_shutack_wait_bound

• sctp_maxburst

• sctp_addip_enabled

• sctp_prsctp_enabled

System Facility Parameters

The following system facilities are new in the Solaris 10 release:

• autofs

• ftp

• nfs

The inetd system facility is obsolete in the Solaris 10 release.

Removal of sun4m Support

The sun4m platform is not supported in the Solaris 10 release. The following parameters were modified to reflect the removal of sun4m support:

• max_nprocs

• maxphys

• noexec_user_stack

New or Changed Parameters in the Solaris 9 Releases

The following sections describe new or changed parameters in the Solaris 9 releases.

ip_policy_mask

This parameter is new in the Solaris 9 12/02 release. For information, see ip_policy_mask.

Removal of sun4d Support

The sun4d platform is not supported in the Solaris 9 release. The following parameters were modified to reflect the removal of sun4d support:

• max_nprocs

• maxphys

• noexec_user_stack

Unsupported or Obsolete Parameters

priority_paging and cachefree are Not Supported

The priority_paging and cachefree tunable parameters are not supported in the Solaris 9 release. They have been replaced with an enhanced file system caching architecture that implements paging policies similar to priority paging, but are always enabled. Attempts to set these parameters in the /etc/system file result in boot-time warnings such as:

sorry, variable 'priority_paging' is not defined in the 'kernel'
sorry, variable 'cachefree' is not defined in the 'kernel'     

The SUNWcsr packages that contain the /etc/system file have been modified so that the inclusion of the priority_paging or cachefree tunable parameters are prohibited. If you upgrade to the Solaris 9 release or add the SUNWcsr packages and your /etc/system file includes the priority_paging or cachefree parameters, the following occurs:

1. This message is displayed if the priority_paging or cachefree parameters are set in the /etc/system file:

   /etc/system has been modified since it contains references to priority paging tunables. Please review the changed file.

2. Comments are inserted in the /etc/system file before any line that sets priority_paging or cachefree. For example, if priority_paging is set to 1, the following lines are inserted before the line with the priority_paging value:

*NOTE: As of Solaris 9, priority paging is unnecessary and has been removed.
* Since references to priority paging-related tunables will now result in 
* boot-time warnings, the assignment below has been commented out. For more 
* details,see the Solaris 9 Release Notes,or the "Solaris Tunable Parameters
* Reference Manual".

System V Shared Memory

The following parameters are obsolete:

• shmsys:shminfo_shmmin

• shmsys:shminfo_shmseg

New Parameters in the Solaris 8 Release

logevent_max_q_sz

This parameter is new in the Solaris 8 1/01 release. For information, see logevent_max_q_sz.