What's New in Solaris System Tuning?

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

• Solaris Express Community Edition, build 111 and Open Solaris 2009.06 release: This release includes several igb and ixgbe network driver parameters. For more information, see igb Parameters and ixgbe Parameters.

• Solaris Express Community Edition, build 90 and Open Solaris 2009.06 release: 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 Express Community Edition, build 105: 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 Express Community Edition, build 102: This release includes the kmem_stackinfo parameter, which can be enabled to monitor kernel thread stack usage. For more information, see kmem_stackinfo.

• Solaris Express Community Edition, build 89: The Solaris Express version of this manual inadvertently included the nfs4_shrinkreaddir parameter information. This parameter is not available.

• Solaris Express Community Edition, build 89: For information about tuning ZFS file systems, see the following site:

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

• Solaris Express Community Edition, build 86: Memory locality group parameters are provided in this release. For more information about these parameters, see Locality Group Parameters.

• Solaris Express Developer Edition 1/08: The Solaris 10 version of this manual inadvertently included the nfs4_dynamic parameter information. 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:

  • default_tsb_size

  • enable_tsb_rss_sizing

  • tsb_rss_factor

• 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: 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: Virtualization Using the Solaris Operating System.

• 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 the 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 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 Express 2/06: The ip_squeue_fanout parameter has been modified. For more information, see ip_squeue_fanoutand ip_soft_rings_cnt.

• Solaris Express 12/05: The ip_multidata_outbound parameter has been enhanced. For more information, see ip_multidata_outbound.

• Solaris Express 11/05: 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 Express 11/05: 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 Express 10/05: The md_mirror:md_resync_bufsz parameter is changed. The new default value is 1024 blocks. For more information, see md_mirror:md_resync_bufsz.

• Solaris Express 6/05: The default value of the sq_max_size parameter was incorrectly documented in the Solaris 10 release. For more information, see sq_max_size.

• Solaris Express 6/05: For information on using the new TCP keepalive parameters, see tcp_keepalive_abort_interval and tcp_keepalive_interval.