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bogomips != bogomips in /proc/cpuinfo [message #32322]

Thu, 31 July 2008 15:47

sspt
Messages: 100
Registered: August 2006
Location: Portugal

Senior Member

Hi,
I've recently reloaded a box with CentOS 5.2 + 2.6.18-53.1.19.el5.028stab053.14. There seems to be a problem with NMI watchdog and the bogomips is incorrect. Any idea about what can cause it?

/var/log/messages (First boot, 2.6.18-92.el5)
Jul 29 18:26:31 server kernel: Booting processor 1/4 APIC 0x1
Jul 29 18:26:31 server kernel: Initializing CPU#1
Jul 29 18:26:31 server kernel: Calibrating delay using timer specific routine.. 4386.89 BogoMIPS (lpj=2193447)
Jul 29 18:26:31 server kernel: CPU: L1 I Cache: 64K (64 bytes/line), D cache 64K (64 bytes/line)
Jul 29 18:26:31 server kernel: CPU: L2 Cache: 1024K (64 bytes/line)
Jul 29 18:26:31 server kernel: CPU 1/1 -> Node 0
Jul 29 18:26:31 server kernel: CPU: Physical Processor ID: 0
Jul 29 18:26:31 server kernel: CPU: Processor Core ID: 1
Jul 29 18:26:31 server kernel: Dual Core AMD Opteron(tm) Processor 275 stepping 02
Jul 29 18:26:31 server kernel: CPU 1: Syncing TSC to CPU 0.
Jul 29 18:26:31 server kernel: CPU 1: synchronized TSC with CPU 0 (last diff -7 cycles, maxerr 593 cycles)
Jul 29 18:26:31 server kernel: SMP alternatives: switching to SMP code
Jul 29 18:26:32 server kernel: Booting processor 2/4 APIC 0x2
Jul 29 18:26:32 server kernel: Initializing CPU#2
Jul 29 18:26:32 server kernel: Calibrating delay using timer specific routine.. 4386.89 BogoMIPS (lpj=2193445)
Jul 29 18:26:32 server kernel: CPU: L1 I Cache: 64K (64 bytes/line), D cache 64K (64 bytes/line)
Jul 29 18:26:32 server kernel: CPU: L2 Cache: 1024K (64 bytes/line)
Jul 29 18:26:32 server kernel: CPU 2/2 -> Node 1
Jul 29 18:26:32 server pcscd: pcscdaemon.c:507:main() pcsc-lite 1.4.4 daemon ready.
Jul 29 18:26:32 server kernel: CPU: Physical Processor ID: 1
Jul 29 18:26:32 server kernel: CPU: Processor Core ID: 0
Jul 29 18:26:32 server kernel: Dual Core AMD Opteron(tm) Processor 275 stepping 02
Jul 29 18:26:32 server kernel: CPU 2: Syncing TSC to CPU 0.
Jul 29 18:26:32 server kernel: CPU 2: synchronized TSC with CPU 0 (last diff -122 cycles, maxerr 1125 cycles)
Jul 29 18:26:32 server kernel: SMP alternatives: switching to SMP code
Jul 29 18:26:32 server kernel: Booting processor 3/4 APIC 0x3
Jul 29 18:26:32 server kernel: Initializing CPU#3
Jul 29 18:26:32 server kernel: Calibrating delay using timer specific routine.. 4386.89 BogoMIPS (lpj=2193445)
Jul 29 18:26:32 server kernel: CPU: L1 I Cache: 64K (64 bytes/line), D cache 64K (64 bytes/line)
Jul 29 18:26:32 server kernel: CPU: L2 Cache: 1024K (64 bytes/line)
Jul 29 18:26:32 server kernel: CPU 3/3 -> Node 1
Jul 29 18:26:32 server kernel: CPU: Physical Processor ID: 1
Jul 29 18:26:32 server kernel: CPU: Processor Core ID: 1
Jul 29 18:26:32 server kernel: Dual Core AMD Opteron(tm) Processor 275 stepping 02
Jul 29 18:26:32 server kernel: CPU 3: Syncing TSC to CPU 0.
Jul 29 18:26:32 server kernel: CPU 3: synchronized TSC with CPU 0 (last diff -121 cycles, maxerr 1124 cycles)
Jul 29 18:26:32 server kernel: Brought up 4 CPUs
Jul 29 18:26:32 server kernel: testing NMI watchdog ... OK.

/var/log/messages (Second boot, 2.6.18-53.1.19.el5.028stab053.14)
Jul 29 18:53:25 ovz3 kernel: Booting processor 1/4 APIC 0x1
Jul 29 18:53:25 ovz3 kernel: Initializing CPU#1
Jul 29 18:53:25 ovz3 kernel: Calibrating delay using timer specific routine.. 4386.89 BogoMIPS (lpj=2193445)
Jul 29 18:53:25 ovz3 kernel: CPU: L1 I Cache: 64K (64 bytes/line), D cache 64K (64 bytes/line)
Jul 29 18:53:25 ovz3 kernel: CPU: L2 Cache: 1024K (64 bytes/line)
Jul 29 18:53:25 ovz3 kernel: CPU 1/1 -> Node 0
Jul 29 18:53:25 ovz3 kernel: CPU: Physical Processor ID: 0
Jul 29 18:53:25 ovz3 kernel: CPU: Processor Core ID: 1
Jul 29 18:53:25 ovz3 kernel: Dual Core AMD Opteron(tm) Processor 275 stepping 02
Jul 29 18:53:25 ovz3 kernel: CPU 1: Syncing TSC to CPU 0.
Jul 29 18:53:25 ovz3 kernel: CPU 1: synchronized TSC with CPU 0 (last diff 2 cycles, maxerr 592 cycles)
Jul 29 18:53:25 ovz3 kernel: Booting processor 2/4 APIC 0x2
Jul 29 18:53:25 ovz3 kernel: Initializing CPU#2
Jul 29 18:53:25 ovz3 kernel: Calibrating delay using timer specific routine.. 4386.89 BogoMIPS (lpj=2193446)
Jul 29 18:53:25 ovz3 kernel: CPU: L1 I Cache: 64K (64 bytes/line), D cache 64K (64 bytes/line)
Jul 29 18:53:25 ovz3 kernel: CPU: L2 Cache: 1024K (64 bytes/line)
Jul 29 18:53:25 ovz3 kernel: CPU 2/2 -> Node 1
Jul 29 18:53:25 ovz3 kernel: CPU: Physical Processor ID: 1
Jul 29 18:53:25 ovz3 kernel: CPU: Processor Core ID: 0
Jul 29 18:53:25 ovz3 kernel: Dual Core AMD Opteron(tm) Processor 275 stepping 02
Jul 29 18:53:25 ovz3 kernel: CPU 2: Syncing TSC to CPU 0.
Jul 29 18:53:25 ovz3 kernel: CPU 2: synchronized TSC with CPU 0 (last diff -121 cycles, maxerr 1127 cycles)
Jul 29 18:53:25 ovz3 kernel: Booting processor 3/4 APIC 0x3
Jul 29 18:53:25 ovz3 kernel: Initializing CPU#3
Jul 29 18:53:25 ovz3 kernel: Calibrating delay using timer specific routine.. 4386.89 BogoMIPS (lpj=2193447)
Jul 29 18:53:25 ovz3 kernel: CPU: L1 I Cache: 64K (64 bytes/line), D cache 64K (64 bytes/line)
Jul 29 18:53:25 ovz3 kernel: CPU: L2 Cache: 1024K (64 bytes/line)
Jul 29 18:53:25 ovz3 kernel: CPU 3/3 -> Node 1
Jul 29 18:53:26 ovz3 kernel: CPU: Physical Processor ID: 1
Jul 29 18:53:26 ovz3 kernel: CPU: Processor Core ID: 1
Jul 29 18:53:26 ovz3 kernel: Dual Core AMD Opteron(tm) Processor 275 stepping 02
Jul 29 18:53:26 ovz3 kernel: CPU 3: Syncing TSC to CPU 0.
Jul 29 18:53:26 ovz3 kernel: CPU 3: synchronized TSC with CPU 0 (last diff -122 cycles, maxerr 1127 cycles)
Jul 29 18:53:26 ovz3 kernel: Brought up 4 CPUs
Jul 29 18:53:26 ovz3 kernel: testing NMI watchdog ... CPU#0: NMI appears to be stuck (0->0)!

[root@ovz3 ~]# cat /proc/cpuinfo
processor       : 0
vendor_id       : AuthenticAMD
cpu family      : 15
model           : 33
model name      : Dual Core AMD Opteron(tm) Processor 275
stepping        : 2
cpu MHz         : 2193.812
cache size      : 1024 KB
physical id     : 0
siblings        : 2
core id         : 0
cpu cores       : 2
fpu             : yes
fpu_exception   : yes
cpuid level     : 1
wp              : yes
flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt lm 3dnowext 3dnow pni lahf_lm cmp_legacy
bogomips        : 1994.04
TLB size        : 1024 4K pages
clflush size    : 64
cache_alignment : 64
address sizes   : 40 bits physical, 48 bits virtual
power management: ts fid vid ttp

processor       : 1
vendor_id       : AuthenticAMD
cpu family      : 15
model           : 33
model name      : Dual Core AMD Opteron(tm) Processor 275
stepping        : 2
cpu MHz         : 2193.812
cache size      : 1024 KB
physical id     : 0
siblings        : 2
core id         : 1
cpu cores       : 2
fpu             : yes
fpu_exception   : yes
cpuid level     : 1
wp              : yes
flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt lm 3dnowext 3dnow pni lahf_lm cmp_legacy
bogomips        : 1994.04
TLB size        : 1024 4K pages
clflush size    : 64
cache_alignment : 64
address sizes   : 40 bits physical, 48 bits virtual
power management: ts fid vid ttp

processor       : 2
vendor_id       : AuthenticAMD
cpu family      : 15
model           : 33
model name      : Dual Core AMD Opteron(tm) Processor 275
stepping        : 2
cpu MHz         : 2193.812
cache size      : 1024 KB
physical id     : 1
siblings        : 2
core id         : 0
cpu cores       : 2
fpu             : yes
fpu_exception   : yes
cpuid level     : 1
wp              : yes
flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt lm 3dnowext 3dnow pni lahf_lm cmp_legacy
bogomips        : 1994.04
TLB size        : 1024 4K pages
clflush size    : 64
cache_alignment : 64
address sizes   : 40 bits physical, 48 bits virtual
power management: ts fid vid ttp

processor       : 3
vendor_id       : AuthenticAMD
cpu family      : 15
model           : 33
model name      : Dual Core AMD Opteron(tm) Processor 275
stepping        : 2
cpu MHz         : 2193.812
cache size      : 1024 KB
physical id     : 1
siblings        : 2
core id         : 1
cpu cores       : 2
fpu             : yes
fpu_exception   : yes
cpuid level     : 1
wp              : yes
flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt lm 3dnowext 3dnow pni lahf_lm cmp_legacy
bogomips        : 1994.04
TLB size        : 1024 4K pages
clflush size    : 64
cache_alignment : 64
address sizes   : 40 bits physical, 48 bits virtual
power management: ts fid vid ttp

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Re: bogomips != bogomips in /proc/cpuinfo [message #32334 is a reply to message #32322]

Fri, 01 August 2008 12:10

kir
Messages: 1645
Registered: August 2005
Location: Moscow, Russia

Senior Member

Does it affect you in any way, or you just don't like the fact that the numbers in dmesg and in /proc/cpuinfo do not match?

Kir Kolyshkin

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Re: bogomips != bogomips in /proc/cpuinfo [message #32335 is a reply to message #32322]

Fri, 01 August 2008 12:10

maratrus
Messages: 1495
Registered: August 2007
Location: Moscow

Senior Member

Hi,

it seems to be not OpenVZ problem.
Have you compiled your kernel by yourself?
If yes please attach the .config file.
Also please attach lsmod output and "uname -a".

bogomips could change due to the clock rate or cpu freq changing.

Anyway, do you have a chance to try non OpenVZ 2.6.18 RHEL based kernel?

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Re: bogomips != bogomips in /proc/cpuinfo [message #32338 is a reply to message #32334]

Fri, 01 August 2008 12:20

sspt
Messages: 100
Registered: August 2006
Location: Portugal

Senior Member

kir wrote on Fri, 01 August 2008 13:10

Does it affect you in any way, or you just don't like the fact that the numbers in dmesg and in /proc/cpuinfo do not match?

As it's a production node and usually has around 400000 cpu units, at this time it's overcommited (about 260000 of 200000 cpuunits)

maratrus wrote on Fri, 01 August 2008 13:10

I'm using the precompilled binnaries.

I'll move the VE's off it and atemp to run the CentOS stock kernel to check if it solves the problem.

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Re: bogomips != bogomips in /proc/cpuinfo [message #32341 is a reply to message #32335]

Fri, 01 August 2008 13:22

sspt
Messages: 100
Registered: August 2006
Location: Portugal

Senior Member

Quote:

[root@ovz3 ~]# uname -a
Linux ovz3.public-network.com 2.6.18-53.1.19.el5.028stab053.14 #1 SMP Thu May 8 16:29:13 MSD 2008 x86_64 x86_64 x86_64 GNU/Linux
[root@ovz3 ~]# lsmod
Module Size Used by
vzethdev 46864 0
vznetdev 56712 22
simfs 38296 11
vzrst 170024 0
ip_nat 53520 1 vzrst
vzcpt 147512 0
ip_conntrack 100884 9 vzrst,ip_nat,vzcpt
nfnetlink 40392 2 ip_nat,ip_conntrack
tun 46336 2 vzrst,vzcpt
vzmon 80528 15 vzethdev,vznetdev,vzrst,vzcpt
xt_tcpudp 36224 0
xt_length 35072 0
ipt_ttl 34816 0
xt_tcpmss 35328 0
ipt_TCPMSS 37376 0
iptable_mangle 37888 11
iptable_filter 37760 11
xt_multiport 36352 0
xt_limit 36352 0
ipt_tos 34560 0
ipt_REJECT 38784 0
ip_tables 57568 2 iptable_mangle,iptable_filter
x_tables 52616 10 xt_tcpudp,xt_length,ipt_ttl,xt_tcpmss,ipt_TCPMSS,xt_multipor t,xt_limit,ipt_tos,ipt_REJECT,ip_tables
vzdquota 79336 11 [permanent]
autofs4 57992 2
hidp 83584 2
rfcomm 104872 0
l2cap 89216 10 hidp,rfcomm
bluetooth 118660 5 hidp,rfcomm,l2cap
sunrpc 200008 1
ipv6 422368 98 vzrst,vzcpt,vzmon
vzdev 36872 6 vzethdev,vznetdev,vzmon,vzdquota
cpufreq_ondemand 40080 1
dm_mirror 59912 0
dm_multipath 52368 0
dm_mod 95952 2 dm_mirror,dm_multipath
video 51208 0
sbs 49856 0
backlight 39808 0
i2c_ec 38528 1 sbs
button 40480 0
battery 43784 0
asus_acpi 50724 0
acpi_memhotplug 40068 0
ac 38664 0
lp 47056 0
sg 69672 0
i2c_amd756 40324 0
i2c_amd8111 39168 0
shpchp 70700 0
floppy 95400 0
i2c_core 56064 3 i2c_ec,i2c_amd756,i2c_amd8111
ide_cd 73632 0
k8_edac 50112 0
parport_pc 62248 1
pcspkr 36224 0
edac_mc 58592 1 k8_edac
k8temp 39040 0
tg3 141316 0
serio_raw 40452 0
parport 73740 2 lp,parport_pc
amd_rng 35976 0
cdrom 68904 1 ide_cd
hwmon 36488 1 k8temp
aic79xx 202456 3
scsi_transport_spi 59776 1 aic79xx
sd_mod 56192 4
scsi_mod 186296 4 sg,aic79xx,scsi_transport_spi,sd_mod
ext3 168336 2
jbd 102256 1 ext3
uhci_hcd 57368 0
ohci_hcd 54428 0
ehci_hcd 65164 0

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Re: bogomips != bogomips in /proc/cpuinfo [message #32345 is a reply to message #32341]

Fri, 01 August 2008 14:38

maratrus
Messages: 1495
Registered: August 2007
Location: Moscow

Senior Member

Quote:

cpufreq_ondemand 40080 1

it could dynamically increase/decrease the speed.

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Re: bogomips != bogomips in /proc/cpuinfo [message #32346 is a reply to message #32341]

Fri, 01 August 2008 14:43

maratrus
Messages: 1495
Registered: August 2007
Location: Moscow

Senior Member

Hi,

so you have a possibility to show? :

Quote:

cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor

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Re: bogomips != bogomips in /proc/cpuinfo [message #32350 is a reply to message #32346]

Fri, 01 August 2008 15:32

sspt
Messages: 100
Registered: August 2006
Location: Portugal

Senior Member

Quote:

[root@ovz3 ~]# cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
ondemand

Although the cpu speed is the same as usual, it's just affecting bogomips

Quote:

[root@ovz3 ~]# cat /proc/cpuinfo | grep MHz
cpu MHz : 2193.812
cpu MHz : 2193.812
cpu MHz : 2193.812
cpu MHz : 2193.812
[root@ovz3 ~]#

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Re: bogomips != bogomips in /proc/cpuinfo [message #32353 is a reply to message #32350]

Fri, 01 August 2008 17:33

maratrus
Messages: 1495
Registered: August 2007
Location: Moscow

Senior Member

Hi,

could you possibly conduct the following experiment

cat sys/devices/system/cpu/cpu*/cpufreq/scaling_available_governors

if perfomance is available

echo "performance" > /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor

anything change?

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Re: bogomips != bogomips in /proc/cpuinfo [message #32356 is a reply to message #32353]

Fri, 01 August 2008 17:58

sspt
Messages: 100
Registered: August 2006
Location: Portugal

Senior Member

Problem solved

[root@ovz3 devices]# echo "performance" > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
[root@ovz3 devices]# echo "performance" > /sys/devices/system/cpu/cpu1/cpufreq/scaling_governor
[root@ovz3 devices]# echo "performance" > /sys/devices/system/cpu/cpu2/cpufreq/scaling_governor
[root@ovz3 devices]# echo "performance" > /sys/devices/system/cpu/cpu3/cpufreq/scaling_governor

[root@ovz3 devices]# cat /proc/cpuinfo | grep bogomips
bogomips        : 4386.89
bogomips        : 4386.89
bogomips        : 4386.89
bogomips        : 4386.89

Thank you

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