SarCheck logo
for HP-UX 11

HP Business Partner logo

SarCheck is a UNIX performance analysis and tuning tool for most HP-UX, Linux, Sun Solaris, and AIX systems that produces recommendations and explanations, with supporting graphs and tables. You can order a FREE evaluation copy right here. More information about SarCheck can be found further down on this page or on our high-bandwidth narrated product tour, and here are some pages which may be of interest:


See what SarCheck does, then try it on your own system:

More information:


If you've had trouble understanding how to tune your HP-UX system by setting ninode, bufpages, max_dbc_pct, semmni, or any of the other tunable parameters, you need SarCheck! SarCheck analyzes your HP-UX system for possible performance bottlenecks and tells you how to correct them.

Most performance tools are actually resource monitors. They're good tools which provide useful statistics about resource utilization in a variety of numeric and graphical formats, but they leave most of the analysis and interpretation up to you. SarCheck for HP-UX was released in August 1996 and we have been improving it continuously since then with options to help you produce graphs, adjust thresholds, and look at more data. The one and only Bill Hassell has spent time with us helping to improve SarCheck's algorithms, its recommendations, and its ability to solve real world performance problems. Bill retired from HP, is a regular speaker at a number of conferences around the world (just search for Bill Hassell) . We think he's so good that we decided to give him some publicity by mentioning him here.

SarCheck takes performance tuning beyond the others. Instead of just monitoring and re-reporting an HP-UX system's utilization data and statistics, SarCheck analyzes the output of the sar and ps utilities, collects other data from the kernel, and examines the system's tunable parameters and their interaction with each other. Then in a concise, plain English report, SarCheck identifies problem areas and makes recommendations about how to correct them. SarCheck does not actually monitor your system's resources... it leaves that up to sar and ps, which are included with the operating system. SarCheck has been translating sar and ps data into plain English for years. Eventually some other tools may try to generate English output and if they do, we will remain years ahead of them. We do have an agent which will monitor HP-UX activity such as the size of the buffer cache, and the agent is very lightweight, with trivial CPU and memory utilization.

To maintain peak efficiency, use SarCheck regularly and watch how its recommendations change when you add more users, upgrade system components and software, or whenever you detect a change in system performance.

We have a solution for the #1 issue according to the Interex HP-UX System Performance Ballot, and we've had it for over 10 years! In the Systems Improvement Ballot conducted by Interex at the 1999 HP World conference, the need for better performance tuning guidelines was voted the #1 issue and it hasn't gone away. This is what SarCheck does and we're delighted by the fact that we have sold thousands of licenses. Let SarCheck perform a health check on your HP-UX or other UNIX/Linux system today.

SarCheck has been written to be lean and efficient, much like this web site. There isn't a lot of "fluff" here or endless flashy graphics... just the information you need to do your job quickly and efficiently, presented in a user-friendly format. SarCheck requires less than a megabyte of disk space and typically uses less than one second of CPU time per day!

SarCheck will run on any HP 9000 running either the 32- and 64-bit versions of HP-UX 11, and on either PA RISC or Itanium processors. We certified SarCheck Version 3 for HP-UX 11.00 back in January 1998 and continue to add new features and improve its algorithms and knowledge base. Support for HP-UX 10.x operating systems is being ended, so check with us if you're still using this old and unsupported operating system. SarCheck is also available for Solaris SPARC 2.5+, AIX 4.3+, and Linux x86 2.2 - 2.6. We help make sense of tuning multiple UNIX and Linux platforms.

We're going to say it again: At some point in the near future, SarCheck for HP-UX will no longer run on any version of HP-UX 10. We have been saying this since the beginning of 2005 and the change will occur soon. This series of operating systems is no longer supported by HP and very few SarCheck licensees still use it. By removing support for these obsolete operating systems, we will be able to make SarCheck more efficient and will be able to better support future operating systems. Several years ago, SarCheck's support of HP-UX 9 ended for the same reasons.

ISVs need to build software on old versions of the operating system in order to support everyone, but old operating systems run on old hardware and our old system is not going to last forever. We plan to take it out of service before it fails on its own. We think that running 9 years and surviving two moves to larger facilities without any problems says a lot of good things about HP's hardware.


Disclaimer: SarCheck is not available in countries or jurisdictions where our products or license agreements violate local law. We are unaware of any locations where this would apply, but laws and customs vary wildly around the world.
Please contact us if you have any questions.


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Information in this document is subject to change without notice.
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This information is correct as of June 18, 2007 and is subject to change without notice.