TOCPREVNEXTINDEX

Lund Performance Solutions


SOS/SOLARIS Pulse Points
Pulse points are the indicators of performance displayed in the SOS Pulse Points screen. For information about pulse point performance indicators, see "SOS Pulse Points Summary".
The following SOLARIS pulse points are provided by John Herberg of Lund Performance Solutions and Craig Solomon of Lund Consulting Services. The performance ranges are generic for all SOLARIS systems—customizing them for your system is recommended. Please refer to the configuration instructions in "SOS ppoints File".
Table A.1 SOS/SOLARIS Pulse Points
Performance Indicator
Performance Ranges
Normal
Problematic
Unacceptable
Processor Performance
CPU Busy %
The percentage of time the CPU spent executing the following activities instead of being in a pause or idle state:
  • Processing user and system process code.
  • Managing main memory.
  • Scheduling and dispatching processes (interrupts).
  • Processing context switches and overhead (external device activity).
  •  
    less than 60
    60 to 85
    greater than 85
    CPU High Pri Busy %
    The percentage of time the CPU spent executing high-priority system and user processes, interrupts, and overhead.
    less than 60
    60 to 85
    greater than 85
    Real Time Processing %
    The percentage of time the CPU spent serving online, interactive sessions ("real time" user processes). These processes run at a fixed high-priority status.
    less than 5
    5 to 10
    greater than 10
    Run Queue Average
    The average number of executable processes that waited for the CPU during a collection interval.
    less than 5
    5 to 10
    greater than 10
    System Processing %
    The percentage of time the CPU spent executing system calls or operating in kernel mode.
    less than 10
    10 to 20
    greater than 20
    Memory Performance
    Memory Used %
    The average percentage of main memory used during the collection interval.
    less than 80
    80 to 90
    greater than 90
    Page Outs/second
    The number of instances per second that a page out occurred during the collection interval. A page out is performed to move the least-needed pages from memory by writing them to swap space or to the file system. A page out occurs when physical memory becomes scarce.
    less than 5
    5 to 10
    greater than 10
    Deactivations/second
    The number of processes swapped out of memory to disk in order to satisfy extreme memory shortages.
    less than 2
    2 to 5
    greater than 5
    Disk Performance
    Disk Queue Length
    The average number of processes in the request queue for a particular disk drive.
    less than 1
    1 to 3
    greater than 3
    Read Hit %
    The percentage of time that requests for information were satisfied in main memory. A Read Hit percentage less than 90 could indicate a data locality problem or a shortage of memory.
    greater than 90
    90-80
    less than 80
    Disk I/O Rate
    The number of disk I/O (reads and writes to disk) per second.
    less than 40
    40 to 60
    greater than 60

    Lund Performance Solutions
    www.lund.com
    Voice: (541) 812-7600
    Fax: (541) 81207611
    info@lund.com
    TOCPREVNEXTINDEX