IBM ZVM - FOR LINUX V6 RELEASE 1, Getting Started

Page: 136 / 172

If you want to
check ...
Then issue ...
Whether a virtual
machine is hung cp indicate user userid exp (several times at 10–second intervals)
Example:
cp indicate user bkw exp
Userid=BKW
Mach=XC V=V Attached xstore=NONE
Iplsys=CMS Devnum=27
Spool: Reads=335 Writes=129
Owned spaces: Number=1 Owned size=247M
Primary space: ID=BKW:BASE PRIVATE
Defined size=256M Address limit=814M
Private spaces: Number=1 Owned size=247M
Pages: Main=1369 Xstore=2 Dasd=0
Locked=0 WS=1349 Reserved=0
Shared spaces: Number=0 Owned size=0
Pages: Main=0 Xstore=0 Dasd=0
Locked=0
Private paging:
Xstore: Reads=8 Writes=10 Migrates=0
Dasd: Reads=0 Writes= 0
Shared paging:
Xstore: Reads=0 Writes= 0 Migrates=0
Dasd: Reads=0 Writes= 0
CPU 00: Ctime=0 07:36:37 Vtime=0 00:00:02 Ttime=0 00:00:03
Rdr=404 Prt=0 Pch=16 IO=3970
Notes:
1. If you do not see VTIME, TTIME, and IO increasing, the virtual machine might be in a
legitimate enabled wait state, but this also indicates the virtual machine might need to be
restarted. Warn users and contact the virtual machine owner before you restart the virtual
machine.
A virtual
machine’s share
of resources cp query share userid
Example: Assume your installation has four active virtual machines.
cp query share linux0
LINUX0
: ABSOLUTE SHARE = 40%
MAXIMUM SHARE = NOLIMIT
cp query share linux1
LINUX1
: RELATIVE SHARE = 200
MAXIMUM SHARE = NOLIMIT
cp query share linux2
LINUX2
: RELATIVE SHARE = 100
MAXIMUM SHARE = NOLIMIT
cp query share linux3
LINUX3
: RELATIVE SHARE = 100
MAXIMUM SHARE = NOLIMIT
Notes:
1.
A virtual machine receives its proportion of any scarce resource (CPUs, real storage, or paging
I/O capability) according to its SHARE setting.
2. LINUX0 has an absolute 40% share and therefore receives up to approximately 40% of
available resources.
3. LINUX1 receives up to 200/400 (LINUX1’s relative share divided by the total relative shares)
of the remaining 60% of available resources.
4. LINUX2 and LINUX3 each receive up to 100/400 of the remaining 60% of available resources.
122
z/VM: Getting Started with Linux on System z