What's New in Oracle Solaris System Tuning?

This section describes new or changed parameters in this Oracle Solaris release.

• 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: A previous version of this manual incorrectly identified the range of the tcp_local_dack_interval parameter as 1 millisecond to 1 minute. The correct range is 10 milliseconds to 1 minute. 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

  • enable_tsb_rss_sizing

  • tsb_rss_factor

• 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 Open Solaris 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: The IP instances project enables you to configure a zone as an exclusive-IP zone and assign exclusive access of some LANs or VLANs to that zone.

  The previous behavior of shared-IP zones remains the default behavior. The exclusive-IP zone means that all aspects of the TCP/IP state and policy are per exclusive-IP zone, including TCP/IP tunable parameters.

  The introduction of the IP instances feature means that the following TCP parameters can only be set in the global zone because they require the PRIV_SYS_NET_CONFIG privilege:

  • ip_squeue_fanout

  • ip_squeue_worker_wait

  • ip_soft_rings_cnt

  The other TCP, IP, UDP, and SCTP parameters and route metrics only require the PRIV_SYS_IP_CONFIG privilege. Each exclusive-IP zone controls its own set of these parameters. For shared-IP zones, TCP, IP, UDP, SCTP, and route parameters are controlled by the global zone since the settings of these parameters are shared between the global zone and all shared IP zones.

  For more information about using IP instances in Solaris zones, see System Administration Guide: Oracle Solaris Containers-Resource Management and Oracle Solaris Zones.

• 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 the ncsize parameter was incorrectly documented in the Solaris 10 release. For more information, see ncsize.

• Solaris 10 11/06: The default value of the 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_fanoutand ip_soft_rings_cnt.

• 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 ip_forward_src_routed and ip6_forward_src_routed parameters have been corrected. The default value of this parameter since the Solaris 9 release is disabled, not enabled. For more information, see ip_forward_src_routed and ip6_forward_src_routed.

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

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