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HP-UX 11i Version 2 Release Notes: HP Integrity Servers and HP Workstations > Chapter 3 Workstation- and Server-Specific Information

Technical System Configuration

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Technical documentation

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The Technical System Configuration(TechSysConf) product adjusts various configurable kernel settings, as well, as other system settings with the intent of improving system performance. TechSysConf determines the system RAM to choose a set of values for kernel and system tunables. These tunables are compared against any values you may already have set, and if the proposed value is greater that the current value the proposed value is used. The modifications that TechSysConf implements are advantageous to the vast majority of users.

Summary of Change

The HP-UX 11i v2 release delivers a restructured TechSysConf bundle. This bundle no longer includes the TC-OpenSource tools. The TC-OpenSource tools are still available, via the Internet Express Media, though are not installed as part of TechSysConf.

The changes to the TC-SysSetup product, that remains within the TechSysConf bundle, in the HP-UX 11i v2 release, are:

  • Alters kernel configurable parameters, assigning values that are proven to increase performance in technical environments.

  • Alters selected system configuration files to facilitate easier NFS, AutoFS, and NIS+ configuration.

Impact

The structure of the TechSysConf bundle has change to exclude the TC-OpenSource product. The TC-OpenSource product is removed from the target system during an update from HP-UX 11i v1.6, and removes approximately 140 MB of information from /opt. All of the TC-OpenSource tools can be installed from the Internet Express Media.

Installing the TC-SysSetup product changes kernel parameters, which results in a kernel build and system reboot. Since most of the kernel parameters are selected for the ability to improve performance in typical EDA and MDA application environments, a performance increase should be realized without further kernel tuning.

Specific changes, unrelated to the kernel, include:

  • Configure the system as an NFS server in /etc/rc.config.d/nfsconf.

  • Set NFS daemons to 30 and BIO daemons to 16 in /etc/rc.config.d/nfsconf. These values should only be changed if it increases the setting.

  • Modify the search sequence and fallback activities in /etc/nsswitch.conf.

  • Enable AUTOFS and AUTOMOUNT in /etc/rc.config.d/nfsconf.

  • Set read and write block size to 32Kb in /etc/auto_master.

  • Configure /etc/passwd and /etc/group to import NIS-served data.

There are no unique system installation requirements or dependencies. This bundle is intended to be installed on HP Workstations and Technical Servers.

IMPORTANT: Users who anticipate running a thousand or more of concurrent processes under either the TCOE or MTOE should consider decreasing the kernel parameter maxssiz64_bit to 256MB, or increasing swap allocation to prevent resource exhaustion issues.

Compatibility

Potential conflicts with other install-time parameter specifications, such as SISP enables, have been identified and addressed in TechSysConf.

Performance

The use of TechSysConf results in an all-around performance improvement on systems with mid-range or large memory capacity.

Documentation

There are no documentation changes.

Obsolescence

Not applicable.

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