Do you have the cpu hotplug daemon running? Run "/etc/init.d/cpuplugd status" to check. It will vary on and off cpus automatically. You can turn it off with "/etc/init.d/cpuplugd stop" and "chkconfig cpuplugd off" to not start it at boot time.
On Fri, Aug 27, 2010 at 10:11 AM, Victor Echavarry Diaz <[email protected]> wrote: > 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 > > > > > > > > ----------------------------------------- > CONFIDENTIALITY NOTE: This email communication and its attachments > contain information that are proprietary and confidential to > EVERTEC, INC., its affiliates or its clients. They may not be > disclosed, distributed, used, copied or modified in any way without > EVERTEC, Inc.’s authorization. If you are not the intended > recipient of this email, you are not an authorized person. Please > delete it and notify the sender immediately. EVERTEC, Inc. and its > affiliates do not assume any liability for damages resulting from > emails that have been sent or altered without their consent. > Moreover, EVERTEC, Inc. has taken precautions to safeguard its > email communications, but cannot assure that such is the case and > disclaim any responsibility attributable thereto. > > ---------------------------------------------------------------------- > For LINUX-390 subscribe / signoff / archive access instructions, > send email to [email protected] with the message: INFO LINUX-390 or visit > http://www.marist.edu/htbin/wlvindex?LINUX-390 > ---------------------------------------------------------------------- > For more information on Linux on System z, visit > http://wiki.linuxvm.org/ > -- Bruce Hayden z/VM and Linux on System z ATS IBM, Endicott, NY ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 ---------------------------------------------------------------------- For more information on Linux on System z, visit http://wiki.linuxvm.org/
