DEXAN display commands
There are two commands, DEX and IPRO, that you can use to display information regardless of whether you are analyzing degradation for individual address spaces or the entire system.
Other DEXAN display commands show degradation data for a specific area, and are described along with the family of commands that you use to analyze degradation for that area.
DEX
Displays information about the status of the data collector.- Type:
- Major
The DEX command must precede any DEX minor commands on the screen for them to work.
IPRO
Displays resource impact profile.- Type:
- Minor of DEX
Use the IPRO command preceding a plot command such as IPRO MONJ01 to display a resource impact profile. The plot commands that you may use with IPRO are:
| Command | Explanation |
|---|---|
| MONJnn | Displays a resource impact profile for the address space with DEXAN slot number nn, jobname, or ASID. |
| PLTJnn | Displays a resource impact profile for the address space with DEXAN slot number nn, jobname, or ASID. |
| PLTAnn | Displays a resource impact profile for the address space with DEXAN slot number nn. |
| PLTS | Displays a resource impact profile for system-wide address spaces. |
For example, IPRO MONJ01 would display a resource impact profile for the address space with DEXAN slot number 01.
DEX >> DX0000 V420 running. Cycles=149 STIM=2.2 Elap=10:33 MN <<
begn >> DX2000 Command valid only when Collect not running <<
monj01 ADDR01 ASID=281 % |0 1 2 3 4 5 6 7 8 9 0|
A typical resource impact profile screen for an address space follows.
IPRO MONJ01
+ The largest impactor to ADDR01 is Waiting for CPU
+ |||||||||||||||||||||||||||||||||||||||||||||||
+ ||||||||||||||||||||||||||||||| ------------------------
+ |||||||||||||||||||||||||||||||<--------------- 34%-| Using CPU |
+ ||||||||||||||||||||||||||||||| ------------------------
+ |||||||||||||||||||||||||||||||||||||||||||||||
+ ||||||||||||||||||||||||||||||||||| ------------------------
+ |||||||||||||||||||||||||||||||||||<----------- 24%-| Waiting for CPU |
+ ||||||||||||||||||||||||||||||||||| ------------------------
+ |||||||||||||||||||||||||||||||||||||||||||||||
+ || ||||||||||||||||||||||||| ------------------------
+ || ADDR01 |||||||||||||||||||||||||<----------- 24%-| Disk PKG002 5AE8 |
+ || ||||||||||||||||||||||||| ------------------------
+ |||||||||||||||||||||||||||||||||||||||||||||||
+ ||||||||||||||||||||||||||||||||||||||||| ------------------------
+ |||||||||||||||||||||||||||||||||||||||||<----- 11%-| Swapped: Term-Out |
+ ||||||||||||||||||||||||||||||||||||||||| ------------------------
+ |||||||||||||||||||||||||||||||||||||||||||||||
+ ||||||||||||||||||||||||||||||||||||||||||| ------------------------
+ |||||||||||||||||||||||||||||||||||||||||||<--- 8%-| ECB Wait |
+ ||||||||||||||||||||||||||||||||||||||||||| ------------------------
+ |||||||||||||||||||||||||||||||||||||||||||||||
The resource impact profile is an alternative to the plot display for showing degradation data. The resource impact profile shows more graphically the impact of system resources on a workload. The vertical lines represent a workload’s productivity. For wait reasons the arrows intruding from the right represent the impact a resource has on productivity. The greater the indentation, the greater the impact the system resource has on productivity. The indentations correlate directly to the actual percentage of time the workload waited for or used a resource.
Because the resource impact profile is such a telling graphic display, it lends itself to quick interpretation. This makes it particularly helpful in situations that require fast response from you.
There may be more execution states than can be displayed on the resource impact profile at one time. To see all of the execution states on the display, scroll forward. Execution states are always listed from greatest impact to least impact except for Using CPU, which is always listed first. In general, all of the execution states fit on one screen.