This section describes the revision history for this manual.Current Version: Solaris Express Developer Edition 1/08 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 The current version of this manual applies to the Solaris Express Developer Edition 1/08 release. The following sections describe new, changed, or obsolete kernel tunables.Solaris Express Developer Edition 9/07: The nfs4_dynamic parameter information was inadvertently included in previous versions. This parameter is not available. Solaris Express Developer Edition 1/08 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: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 Express Developer Edition 1/08 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 Express Developer Edition 9/07: 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 Express Developer Edition 9/07: The range value for the maxpgio parameter information that was previously published in this book was incorrect. For more information, see maxpgio. Solaris Express Developer Edition 5/07: For information about changes to parameters that can only be changed in the global zone, see What's New in Solaris System Tuning? Solaris Express Developer's Edition 2/07: The ip_squeue_write parameter information that was previously published in this book was incorrect and has been removed. Solaris Express, Developer's Edition 2/07: The default value of ncsize parameter was incorrectly documented in the Solaris 10 release. For more information, see ncsize. Solaris Express, Developer's Edition 2/07: 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 Express 2/06: The ip_squeue_fanout parameter has been modified. For more information, see ip_squeue_fanout. Solaris Express 2/06Solaris 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 Express 2/06: 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 Express 2/06: 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 Express 12/05: The ip_multidata_outbound parameter has been enhanced. For more information, see ip_multidata_outbound. Solaris Express 11/05: 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 Express 11/05: 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 Express 10/05: 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 Express 10/05: The default value of md_mirror:md_resync_bufsz was increased to 1024 blocks from 128 blocks. For more information, see md_mirror:md_resync_bufsz. Solaris Express 10/05: For information on using the new TCP keepalive parameters, see tcp_keepalive_abort_interval and tcp_keepalive_interval. The following sections describe new, changed, or obsolete kernel tunables.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. The following parameters are modified in the Solaris 10 release:bufhwm and bufhwm_pct ncsize The following parameters are newly documented in the Solaris 10 release:freebehind segmap_percent smallfile 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 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 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 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 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 nfs:nfs4_shrinkreaddir 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 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 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 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. 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 The following sections describe new or changed parameters in the Solaris 9 releases.This parameter is new in the Solaris 9 12/02 release. For information, see ip_policy_mask. 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 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: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. 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". The following parameters are obsolete:shmsys:shminfo_shmmin shmsys:shminfo_shmseg This parameter is new in the Solaris 8 1/01 release. For information, see logevent_max_q_sz.