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SarCheck is a Linux performance analysis and tuning tool that is also available for most Sun Solaris, HP-UX, and AIX systems. It produces recommendations and explanations for tuning linux kernel (or kernal) parameters and improving performance, with supporting graphs and tables. You can order a FREE Linux or UNIX evaluation copy 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:
* Thanks to these reviewers for the compliments. Please note that suggestions in the reviews have been incorporated into SarCheck. The links to reviews of SarCheck open new windows because we like the fact that you're here and don't want to push you off of our site.
What we mean by Linux x86 is that the software will run as an x86 binary. If your Itanium, Opteron, etc. system can emulate an x86, the software should run fine and is efficient enough that SarCheck performance should not be a concern. SarCheck makes recommendations, draws graphs, and does things that no other tool does. It looks at CPU, memory, and I/O resources, and also looks at a number of tunable parameters in the Linux kernel. We think it's way more than a monitorinng tool or utility and we hope you'll try it and let us know what you think. Please contact your sales rep for more information or if you'd like to try it. Here is some recent output from the current version of SarCheck for Linux and a page that shows some of the illuminating graphs we can produce when gnuplot is available. Interestingly, the /proc filesystem is so easy to parse that we don't need to use any of the sar products that exist for Linux. Yes, this means that the /proc filesystem needs to be mounted, but that's true for over 95% of the systems we've seen so far and the sar products need /proc as well. We have not tested SarCheck for Linux x86 with every Linux kernel and hardware combination, but with the help of beta testers and customers we've been running on most of the popular kernels in Red Hat, SuSE, and Debian distributions.
SarCheck is also available for Solaris 2.5+, AIX 4.3+, and HP-UX 11.00+, but check with us about very new releases. We plan to natively support Linux on processors other than x86 when the demand justifies it and we support Redhat, SuSE, and most popular distributions.
Linux people, please note: SarCheck is not freeware. It isn't expensive but it isn't free. We've done the port, we'll go to classes around the world to learn the latest in Linux kernel tuning and optimization, and we'll maintain the software for you. If you like it enough to license it, we'll send you an invoice.
Linux & UNIX books: Here is a selection of books that we use and we hope that they'll help you.
About the picture: The picture of Tux was taken at the NordU2001 Conference in Stockholm. The hat is one of the thousands of propeller hats that we give away at conferences around the world. Our neighbors in the Cendio stand were nice enough to put one of our hats on Tux so we're thanking them with this link to their site, www.cendio.se. The original Tux was created by Larry Ewing using The GIMP.
About "kernal": Yes, we know it's spelled kernel, but alot of people spell it with an "a" when they search for it. If we don't use the incorrectly spelled "linux kernal" in the text of this page, we don't show up in the search results.
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