SCO OpenServer Enterprise System Release 5.0.5,5.0.6,5.0.7 
          SCO OpenServer Host System Release 5.0.5,5.0.6,5.0.7 
          SCO OpenServer Desktop System Release 5.0.5,5.0.6,5.0.7 
          SCO OpenServer Enterprise System Release 5.0.0,5.0.2,5.0.4 
          SCO OpenServer Host System Release 5.0.0,5.0.2,5.0.4 
          SCO OpenServer Desktop System Release 5.0.0,5.0.2,5.0.4 

          How can I easily analyze my Sar data to help me with Performance
          Tuning?

          SarCheck is a product available from Aptitune Software, and can be
          downloaded from:
                    
               ftp://ftp2.sco.com/pub/skunkware/osr5/sysadmin/SarCheck/

          This product will only work for OpenServer5 and will not understand
          the UW7 or OSR6 sar files values.
 
          The product is installed in /usr/local/bin.

               It is recommended to set your PATH variable to include this
               directory.

               To gather information about your server, you must first
               ensure that "sar" is running.

          For OpenServer systems run:

                /usr/lib/sa/sar_enable -y

          For UnixWare systems run:

                Ensure that the follow lines are un-remarked for the "sys"
                user's cron file in /usr/spool/cron/crontabs/sys:

        0 * * * 0-6 $TFADMIN /usr/lib/sa/sa1
        20,40 8-17 * * 1-5 $TFADMIN /usr/lib/sa/sa1
        5 18 * * 1-5 $TFADMIN /usr/lib/sa/sa2 -s 8:00 -e 18:01 -i 1200 -A

          To analyze your sar data run the following:

                /usr/local/bin/ulite

          and specify "d" for sar data files and enter the appropriate file
          from:

                /usr/adm/sa

          or:

               If you have a "sar -A" output, you can specify "r" for a sar
               report file and then enter the filename containing the "sar -A"
               data.

          SarCheck will not function with sar data from OpenServer6 or from
          UnixWare7.  You will get the following message:

          Sorry, SarCheck UltraLite only works with SCO OpenServer Release 5 sar
          reports.  The report specified does not conform to the SCO OpenServer
          Release 5 sar format.

          Technical Article 103492, "Tuning large systems for performance."

          Technical Article 107228, "Large document for tuning SCO UNIX System and SCO Open
          Desktop kernels."

          Technical Article 110628, "Large document for tuning SCO UNIX System and SCO Open
          Desktop kernels - cont'd."

          sar(ADM)

          http://www.sarcheck.com

          There is also Olympus Tuneup available from:

          http://codework5.pacificcodeworks.com/tuneup.shtml

          To look at current parameters, and also monitor system
          performance there is also with a free utility called u386mon.
          This is available as a TLS from:

          ftp://stage.sco.com/TLS/tls012b.cpio.Z
          ftp://stage.sco.com/TLS/tls012.ltr

          With disk bottlenecks your most useful commands is also 'sar'.
          If you look at the output of 'sar -u 1 10' you will see ten one
          second snapshots of your I/O subsystem.  If you have a high (say
          greater than 10%) under the %wio column, then that means that the
          processor is spending 10% of its time waiting for I/O tasks to
          complete.   Usually increasing NBUF and NHBUF fixes this.

          See also: http://www.bb4.com for tools for monitoring your server.

          Technical Article 112723, "How do I set my disk buffering for SCO OpenServer 5 to the optimum values?"