Owner manual

ViewSys User’s Guide—526358-002
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ViewSys Definition Language (VDL)
ViewSys provides the ViewSys Definition Language (VDL), which is used to define the
maximum values for system metrics. ViewSys uses maximum values to determine the
graph maximum for all displays of rate and length values; for example, the disk I/O rate
or the CPU queue length. This approach reduces the likelihood that new software
product (SPR) versions of ViewSys will be needed whenever a new NonStop server
becomes available. ViewSys users can simply download the latest ViewSysC file to the
same subvolume as the ViewSys object file, stop ViewSys and then restart it. For the
latest ViewSysC file:
http://www.NonstopViewSys.com
VDL recognizes these system metric keywords:
ViewSysC file
The ViewSysC file contains various statements that provide ViewSys with information
about CPU types and metric maximum values.
The two most common statements are DEFINE and MAXIMUM.
The syntax for the configuration file is keyword driven. Metric keywords in a MAXIMUM
statement are optionally comma separated. All statements must be terminated with a
semicolon. Statements can span multiple lines.
Metric Name Description
BREAKPOINT Number of allocated break points
CACHEHIT Disk cache hit rate for this CPU in hits per second
CPUQUEUE Average CPU queue length
CPUBUSY Percent CPU busy
DISPATCH Average number of process dispatches per second
DISKIO Disk I/O rate for this CPU per second
MEMLOCKED Number of physical memory pages currently locked
MEMQUEUE Average memory manager queue length
MEMPRESSURE Memory pressure rate
PAGEFAULT Page fault rate
PCBLOW The number of PCBs allocated in low pin process
PCBHIGH The number of PCBs allocated in high pin process
SENDBUSY The percentage of time a send was being performed
PTLE The number of time-list elements in use
TLE The number of time-list elements allocated