New or Changed Parameters in the Oracle 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 OpenSolaris 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 Oracle 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 Release).

• 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.