Caché Monitoring Guide - InterSystems Documentation

Gathering Global Activity Statistics Using ^GLOSTAT
Response
c
z
q
# (a positive integer
indicating number of
seconds)
Action
Displays the report again with updated cumulative statistics since the last
initialization.
Initializes the ^GLOSTAT statistical counters to zero.
Quits the ^GLOSTAT routine.
Initializes statistics, counts statistics for the indicated number of seconds, and
reports statistics as an average per second (Example C and Example G).
4. To report statistics for a determinate interval (Example D):
a. Enter z to initialize the statistics to zeroes.
b. Either enter q to exit the utility, or remain at the prompt without entering anything.
c. Wait for desired period of time.
d. If you quit ^GLOSTAT, run it again. Otherwise, enter c to continue.
e. The ^GLOSTAT report displays statistics that reflect operations since you initialized the counters.
Note:
The ^GLOSTAT utility uses 32-bit counters for most statistics; extremely large time intervals may cause some
counters to overflow.
4.2 Overview of ^GLOSTAT Statistics
Each ^GLOSTAT statistic represents the number of times a type of event has occurred since Caché has started since the
counters have been initialized, or per second during a defined interval. You may run ^GLOSTAT at any time from the
system manager’s namespace. In most cases, it is significant to run the utility on an active system, not an idle one.
If the Caché instance is a stand-alone configuration or an ECP data server, then the report displays only the “Total” column.
If it is an ECP application server (that is, it connects to a remote database) then three columns are shown: “Local,”
“Remote,” and “Total” (Example E).
The following table defines the ^GLOSTAT statistics.
Table 4–1: Statistics Produced by ^GLOSTAT
Statistic
Global references (all)
Global update
references
Routine calls
Routine buffer loads
and saves
Definition
Logical count of accesses to globals, including Sets, Kills, $Data, $Order,
$Increment, $Query, and global references in expressions.
Logical count of global references that are Sets, Kills, or $Increments.
Number of calls to a routine.
Total number of routine loads and saves as a result of ZLoad, ZSave, and running
routines. (In a well-tuned environment, this number increases slowly, since most
routine loads are satisfied by the routine cache memory without accessing the disk.
Each routine load or save transfers up to 32 KB of data (64 KB for Unicode).)
36 Caché Monitoring Guide