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. |