We have guest with two cpu's. A couple of days ago after create new guest with
2 cpu's, the second CPU put the guest in cp mode and the system become slow and
sometimes hangs the system. This is some info about what is happen.
VM directory
PROFILE LINUXPRF
IPL CMS PARM AUTOCR
OPTION QUICKDSP
MACHINE XA 2
* MACHINE ESA 2
COMMAND SET VCONFIG MODE LINUX
COMMAND DEFINE CPU 0 TYPE IFL
* COMMAND DEFINE CPU 1 TYPE IFL
* CPU 0
* CPU 1
USER L20BP L20BP 2048M 2048M G
INCLUDE LINUXPRF
*CPU 1
COMMAND DEFINE CPU 1 TYPE IFL
*
l20bp:~ # vmcp q virtual cpus
vmcp q virtual cpus
CPU 00 ID FF01CF8C20978000 (BASE) IFL CPUAFF ON
l20bp:~ # vmcp define cpu 1
vmcp define cpu 1
CPU 01 defined
l20bp:~ # vmcp q virtual cpus
vmcp q virtual cpus
CPU 00 ID FF01CF8C20978000 (BASE) IFL CPUAFF ON
CPU 01 ID FF01CF8C20978000 STOPPED IFL CPUAFF ON
l20bp:~ #
vmcp begin cpu 1
vmcp begin cpu 1
01: HCPGIR453W CP entered; program interrupt loop
l20bp:~ #
vmcp q virtual cpus
vmcp q virtual cpus
CPU 00 ID FF01CF8C20978000 (BASE) IFL CPUAFF ON
CPU 01 ID FF01CF8C20978000 IFL CPUAFF ON
l20bp:~ #
IPL the system.
LOGON L20BP
ICH70001I L20BP LAST ACCESS AT 09:42:49 ON FRIDAY, AUGUST 27, 201
HCPLGN196I Secondary user not in CP directory
NIC 0340 is created; devices 0340-0342 defined
NIC 0360 is created; devices 0360-0362 defined
z/VM Version 5 Release 4.0, Service Level 1001 (64-bit),
built on IBM Virtualization Technology
There is no logmsg data
FILES: NO RDR, NO PRT, NO PUN
LOGON AT 09:46:15 EDT FRIDAY 08/27/10
MODE = LINUX
HCPCPU1453E CPU 00 is not defined because it already exists.
00: CPU 01 defined
z/VM V5.4.0 2010-02-22 09:43
00: Please choose (default will boot in 10 seconds):
00: Booting default (ipl)...
Linux version 2.6.16.60-0.21-default (ge...@buildhost) (gcc version 4.1.2 200701
15 (SUSE Linux)) #1 SMP Tue May 6 12:41:02 UTC 2008
We are running under VM (64 bit mode)
Detected 2 CPU's
Boot cpu address 0
Built 1 zonelists
Kernel command line: root=/dev/dasdb1 TERM=dumb BOOT_IMAGE=0
PID hash table entries: 4096 (order: 12, 131072 bytes)
Dentry cache hash table entries: 524288 (order: 10, 4194304 bytes)
Inode-cache hash table entries: 262144 (order: 9, 2097152 bytes)
Memory: 2043904k/2097152k available (4671k kernel code, 0k reserved, 2089k data,
212k init)
Security Framework v1.0.0 initialized
.
.
.
Mount-cache hash table entries: 256
checking if image is initramfs... it is
Freeing initrd memory: 3311k freed
cpu 0 phys_idx=0 vers=FF ident=01CF8C machine=2097 unused=8000
cpu 1 phys_idx=1 vers=FF ident=01CF8C machine=2097 unused=8000
Brought up 2 CPUs
migration_cost=1000
NET: Registered protocol family 16
After IPL
l20bp:~ # vmcp q virtual cpus
CPU 00 ID FF01CF8C20978000 (BASE) IFL CPUAFF ON
CPU 01 ID FF01CF8C20978000 IFL CPUAFF ON
20bp login: 01: HCPGSP2629I The virtual machine is placed in CP mode due to a S
IGP stop from
CPU 01.
Processor 1 spun down
Aug 27 09:50:31 l20bp kernel: Processor 1 spun down
l20bp:~ # vmcp q virtual cpus
CPU 00 ID FF01CF8C20978000 (BASE) IFL CPUAFF ON
CPU 01 ID FF01CF8C20978000 IFL CPUAFF ON
l20bp:~ # vmcp q virtual cpus
CPU 00 ID FF01CF8C20978000 (BASE) IFL CPUAFF ON
CPU 01 ID FF01CF8C20978000 STOPPED IFL CPUAFF ON
You have new mail in /var/mail/root
ZIPL.conf
# Modified by YaST2. Last modification on Mon Feb 8 15:54:33 UTC 2010
[defaultboot]
defaultmenu = menu
:menu
default = 1
prompt = 1
target = /boot/zipl
timeout = 10
1 = ipl
2 = Failsafe
###Don't change this comment - YaST2 identifier: Original name: ipl###
[ipl]
image = /boot/image
target = /boot/zipl
ramdisk = /boot/initrd,0x1000000
parameters = "root=/dev/dasdb1 TERM=dumb possible_cpus=4"
###Don't change this comment - YaST2 identifier: Original name: failsafe###
Does anybody know what this is happen. On VM the processor looks ok.
Regards,
Víctor Echavarry
System Programmer
Technology Systems & Operations Division
EVERTEC
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