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

• 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

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