z/VM: CP Commands and Utilities Reference - z/VM - IBM

HIT RATIO-hhh%
identifies the percentage of successful lookups in the minidisk cache. This is the
percentage of eligible read I/Os that were avoided because of the minidisk
cache.
WRITES-mmmmmm/SEC
identifies the number of data pages inserted into the minidisk cache.
STORAGE-nnn%
indicates the use of real storage. It is an instantaneous approximate
percentage. It shows the relationship of the number of pages needed for the
working sets of virtual machines in the dispatch list, to the number of pageable
pages in the system. It is possible for STORAGE to exceed 100 percent.
PAGING-nnnn/SEC
identifies a value that indicates the current system paging activity in decimal
and does not include spooling information.
STEAL-nnn%
indicates the occurrence of non-preferred steals. It is an instantaneous
approximate percentage of pages stolen, that were reserved or referenced
pages owned by users who were in the dispatch list.
Qn
indicates a smoothed average of the number of Qn users in the dispatch list. A
Qn user is an En user who is now in the dispatch list.
Q0
Q1
Q2
indicates the users that were added to the dispatch list with no delay in the
eligible list, regardless of the length of their current transaction.
indicates the users that have just begun a transaction, and therefore are
assumed to be currently processing short transactions.
indicates the users that did not complete their current transactions during
their first dispatch list stay and therefore are assumed to be running
medium-length transactions.
Q3
indicates the users that did not complete their current transactions during
their second dispatch stay and therefore are assumed to be running long
transactions.
EXPAN-nnn
indicates the total delay in response time that a virtual machine experiences
because of contention for scheduled resources. Q2 gives the expansion factor
for those completing in Q2 (medium-length), and Q3 for those completing in Q3
(long-running transactions).
En
indicates a smoothed average of the number of En users in the eligible list.
Although a user may briefly be considered an E0 user, no E0 counts appear.
This is because, by definition, such a user spends virtually no time in the
eligible list. After smoothing, this count would always be 0 if shown. If, by
unusual timing circumstances, a user is found in an E0 category, the user is
counted with the Q0 user counts.
E1
INDICATE LOAD
indicates the users that have just begun a transaction and therefore are
assumed to be currently processing short transactions.
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