Table of Contents
Advertisement
in the eligible list, it moves back to the eligible list (if it can still be dispatched) or
the dormant list (if it can no longer be dispatched).
Related information
For a complete description of the scheduler, see "Virtual Machine Scheduling and
Dispatching" in z/VM: Performance, SC24-6208.
Steps for taking a snapshot of system performance
Before you begin: You need class E authority. You need to understand scheduler
basics and the scheduler lists. See "Overview of performance monitoring" on page
117.
Perform these steps to take a snapshot of system performance:
1.
2.
If you want to
check ...
Then issue ...
System load
cp indicate load
Example:
cp indicate load
AVGPROC-061% 03
XSTORE-000001/SEC MIGRATE-0000/SEC
MDC READS-000028/SEC WRITES-000001/SEC HIT RATIO-100%
STORAGE-015% PAGING-0006/SEC STEAL-000%
Q0-00002(00000)
Q1-00001(00000)
Q2-00001(00000) EXPAN-002 E2-00000(00000)
Q3-00009(00000) EXPAN-002 E3-00000(00000)
PROC 0000-057%
PROC 0002-067%
LIMITED-00000
Notes:
1. AVGPROC indicates utilization of all CPUs
2. MIGRATE=0 means all working sets of the logged-on virtual machines fit in central storage
and expanded storage. A growing MIGRATE number indicates that central storage and
expanded storage are insufficient to contain the working sets of the logged-on virtual
machines, so the system has to resort to paging to DASD. The higher the MIGRATE number
is, the greater is your workload's paging demands on the amount of real storage (central plus
expanded) on your system.
3. STORAGE indicates the real storage utilization.
4. Q0 — Q3 are virtual machines in the dispatch list.
5. E1 — E3 are virtual machines in the eligible list.
6. DORMANT indicates virtual machines that are dormant.
120
z/VM: Getting Started with Linux on System z
Log on a user ID with class E authority.
Base your action on this table:
E1-00000(00000)
PROC 0001-060%
DORMANT-00487
Advertisement
Table of Contents
