HP-UX V-Class Changes

Server Parameter Settings

The HP-UX 11.0 Extension Pack provides several tuned parameter sets useful on HP V-Class servers. Configuring HP-UX with these parameter sets can improve your V-Class server's performance when using it for different purposes, such as scientific, data processing, or mixed interactive use.

Using the SAM utility (/usr/sbin/sam), you can configure an HP-UX kernel for HP V-Class servers. To do so, select Kernel Configuration, then the Configurable Parameters subarea, and apply the tuned parameter set for your type of server use via the Actions menu.

HP-UX kernel configurations are provided for the following types of V-Class server use:

Scientific and technical use--Servers running applications that have very large data sets and may have long processing times. Examples include NASTRAN, Abaqus, mechanical and electrical design applications, and fluid dynamics applications.The "V-Class Technical Server" tuned parameter set provides HP-UX kernel parameter settings for running such workloads on HP V-Class servers.
Dedicated commercial data processing use--Servers whose use is restricted for online transaction processing (OLTP), running Oracle, and running other data processing workloads. These systems provide limited, if any, interactive user access.The "OLTP/Database Server System" tuned parameter set provides a good HP-UX configuration for using HP V-Class servers for dedicated commercial data processing.
Mixed interactive and data processing use--Servers used for interactive user log-ins, and for running OLTP/data processing workloads and miscellaneous other applications.The "OLTP/Database Monolithic System" tuned parameter set is appropriate for mixed-use V-Class servers.

These tuned parameter sets are available from the SAM utility's Configurable Parameters subarea, as described above, and are stored as files in the following directory:/usr/sam/lib/kc/tuned

Refer to the SAM online help for examples and details on using kernel parameters, or access the http://docs.hp.com/hpux/os/ World Wide Web site.

Additional information is available in the HP V-Class Server HP-UX Configuration Notice (A4801-90002). To order this document call 1-800-227-8164.

Single-Bit Memory Error Handling Enhancement

Single-bit memory errors will now be handled exclusively by memlogd. This allows the system to remove lockable pages that experience repeated single-bit memory errors. These pages are dynamically removed from the kernel's list of free pages and the system uses the Page Deallocation Table to remove them at boot time. Single-bit memory error logging information can be viewed using the Support Tools Manager (STM). This information will no longer be placed in /var/adm/syslog/syslog.log. With or without the HP-UX Extension Pack, the V-Class hardware will automatically correct all single-bit memory errors without noticeable impact to your applications.

HP-UX V-Class Changes

Technical documentation

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Server Parameter Settings

Single-Bit Memory Error Handling Enhancement