Daily Command Summary (System Administration Guide: Advanced Administration)

System Administration Guide: Advanced Administration

Daily Command Summary

The Daily Command Summary report shows the system resource use by command. With this report, you can identify the most heavily used commands and, based on how those commands use system resources, gain insight on how best to tune the system.

These reports are sorted by TOTAL KCOREMIN, which is an arbitrary gauge but often a good one for calculating drain on a system.

A sample daily command summary follows.

                   TOTAL COMMAND SUMMARY
COMMAND   NUMBER      TOTAL   TOTAL     TOTAL   MEAN    MEAN     HOG   CHARS     BLOCKS
NAME        CMDS    KCOREMIN CPU-MIN REAL-MIN  SIZE-K  CPU-MIN  FACTOR TRNSFD    READ

TOTALS      2150  1334999.75  219.59 724258.50 6079.48   0.10   0.00   397338982 419448

netscape      43  2456898.50   92.03  54503.12 26695.51  2.14   0.00   947774912 225568
adeptedi       7    88328.22    4.03    404.12 21914.95  0.58   0.01    93155160   8774
dtmail         1    54919.17    5.33  17716.57 10308.94  5.33   0.00   213843968  40192
acroread       8    31218.02    2.67  17744.57 11682.66  0.33   0.00   331454464  11260
dtwm           1    16252.93    2.53  17716.57 6416.05   2.53   0.00   158662656  12848
dtterm         5     4762.71    1.30  76300.29 3658.93   0.26   0.00    33828352  11604
dtaction      23     1389.72    0.33      0.60 4196.43   0.01   0.55    18653184    539
dtsessio       1     1174.87    0.24  17716.57 4932.97   0.24   0.00    23535616   5421
dtcm           1      866.30    0.18  17716.57 4826.21   0.18   0.00     3012096   6490

The following table describes the data provided in the Daily Command Summary.

Table 20–5 Daily Command Summary


Column	Description
`COMMAND NAME`	Name of the command. Unfortunately, all shell procedures are lumped together under the name `sh` because only object modules are reported by the process accounting system. You should monitor the frequency of programs called `a.out` or `core` or any other unexpected name. You can use the `acctcom` program to determine who executed an oddly named command and if superuser privileges were used.
`NUMBER CMDS`	Total number of times this command was run during prime time.
`TOTAL KCOREMIN`	Total cumulative measurement of the Kbyte segments of memory used by a process per minute of run time.
`TOTAL CPU-MIN`	Total processing time this program accumulated during prime time.
`TOTAL REAL-MIN`	Total real-time (wall-clock) minutes this program accumulated.
`MEAN SIZE-K`	Mean of the `TOTAL` `KCOREMIN` over the number of invocations reflected by `NUMBER` `CMDS`.
`MEAN CPU-MIN`	Mean derived between the `NUMBER` `CMDS` and `TOTAL CPU-MIN`.
`HOG FACTOR`	Total CPU time divided by elapsed time. Shows the ratio of system availability to system use, providing a relative measure of total available CPU time consumed by the process during its execution.
`CHARS TRNSFD`	Total number of characters pushed around by the read and write system calls. Might be negative due to overflow.
`BLOCKS READ`	Total number of the physical block reads and writes that a process performed.