linux servers

[satish]

Dear Erman,

Thanks for all the support.we need your updates for below questions

we have a physical server-we have converted it to 4 servers(one for supp db and one fore supp application.similarly one for dev db and and for dev application) using vmware.

How do we check how many physical cpu's and cores are available in this physical server?
How do we check how many logical cpu's/cores assigned to each virtual server?

Thanks

[ErmanArslansOracleBlog]

For vmware, please check vmware documentation:

Ref:

https://docs.vmware.com/en/VMware-vSphere/6.5/com.vmware.vsphere.resmgmt.doc/GUID-E09F36DF-E31F-417D-9865-06E351D8AF15.html


For Guest VM running on your VMware , check the documentation of the related OS..

if it is Linux ->  you can use /proc/cpuinfo,  dmidecode -t 4 or lscpu

[satish]

We are using linux erman.

Output of cpuinfo command.what to check in below output whether it is virtual or not

[appldev@erpdev ~]$ cat  /proc/cpuinfo
processor       : 0
vendor_id       : GenuineIntel
cpu family      : 6
model           : 79
model name      : Intel(R) Xeon(R) CPU E5-2630 v4 @ 2.20GHz
stepping        : 1
microcode       : 0xb00001e
cpu MHz         : 2196.625
cache size      : 25600 KB
physical id     : 0
siblings        : 2
core id         : 0
cpu cores       : 2
apicid          : 0
initial apicid  : 0
fpu             : yes
fpu_exception   : yes
cpuid level     : 20
wp              : yes
flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts mmx fxsr sse sse2 ss ht syscall nx pdpe1gb rdtscp lm constant_tsc arch_perfmon pebs bts nopl xtopology tsc_reliable nonstop_tsc aperfmperf eagerfpu pni pclmulqdq ssse3 fma cx16 pcid sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand hypervisor lahf_lm abm 3dnowprefetch ida arat epb pln pts dtherm fsgsbase tsc_adjust bmi1 hle avx2 smep bmi2 invpcid rtm rdseed adx smap xsaveopt
bogomips        : 4394.91
clflush size    : 64
cache_alignment : 64
address sizes   : 42 bits physical, 48 bits virtual
power management:

processor       : 1
vendor_id       : GenuineIntel
cpu family      : 6
model           : 79
model name      : Intel(R) Xeon(R) CPU E5-2630 v4 @ 2.20GHz
stepping        : 1
microcode       : 0xb00001e
cpu MHz         : 2196.625
cache size      : 25600 KB
physical id     : 0
siblings        : 2
core id         : 1
cpu cores       : 2
apicid          : 1
initial apicid  : 1
fpu             : yes
fpu_exception   : yes
cpuid level     : 20
wp              : yes
flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts mmx fxsr sse sse2 ss ht syscall nx pdpe1gb rdtscp lm constant_tsc arch_perfmon pebs bts nopl xtopology tsc_reliable nonstop_tsc aperfmperf eagerfpu pni pclmulqdq ssse3 fma cx16 pcid sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand hypervisor lahf_lm abm 3dnowprefetch ida arat epb pln pts dtherm fsgsbase tsc_adjust bmi1 hle avx2 smep bmi2 invpcid rtm rdseed adx smap xsaveopt
bogomips        : 4394.91
clflush size    : 64
cache_alignment : 64
address sizes   : 42 bits physical, 48 bits virtual
power management:

processor       : 2
vendor_id       : GenuineIntel
cpu family      : 6
model           : 79
model name      : Intel(R) Xeon(R) CPU E5-2630 v4 @ 2.20GHz
stepping        : 1
microcode       : 0xb00001e
cpu MHz         : 2196.625
cache size      : 25600 KB
physical id     : 1
siblings        : 2
core id         : 0
cpu cores       : 2
apicid          : 2
initial apicid  : 2
fpu             : yes
fpu_exception   : yes
cpuid level     : 20
wp              : yes
flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts mmx fxsr sse sse2 ss ht syscall nx pdpe1gb rdtscp lm constant_tsc arch_perfmon pebs bts nopl xtopology tsc_reliable nonstop_tsc aperfmperf eagerfpu pni pclmulqdq ssse3 fma cx16 pcid sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand hypervisor lahf_lm abm 3dnowprefetch ida arat epb pln pts dtherm fsgsbase tsc_adjust bmi1 hle avx2 smep bmi2 invpcid rtm rdseed adx smap xsaveopt
bogomips        : 4394.91
clflush size    : 64
cache_alignment : 64
address sizes   : 42 bits physical, 48 bits virtual
power management:

processor       : 3
vendor_id       : GenuineIntel
cpu family      : 6
model           : 79
model name      : Intel(R) Xeon(R) CPU E5-2630 v4 @ 2.20GHz
stepping        : 1
microcode       : 0xb00001e
cpu MHz         : 2196.625
cache size      : 25600 KB
physical id     : 1
siblings        : 2
core id         : 1
cpu cores       : 2
apicid          : 3
initial apicid  : 3
fpu             : yes
fpu_exception   : yes
cpuid level     : 20
wp              : yes
flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts mmx fxsr sse sse2 ss ht syscall nx pdpe1gb rdtscp lm constant_tsc arch_perfmon pebs bts nopl xtopology tsc_reliable nonstop_tsc aperfmperf eagerfpu pni pclmulqdq ssse3 fma cx16 pcid sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand hypervisor lahf_lm abm 3dnowprefetch ida arat epb pln pts dtherm fsgsbase tsc_adjust bmi1 hle avx2 smep bmi2 invpcid rtm rdseed adx smap xsaveopt
bogomips        : 4394.91
clflush size    : 64
cache_alignment : 64
address sizes   : 42 bits physical, 48 bits virtual
power management:

[appldev@erpdev ~]$

[ErmanArslansOracleBlog]

so you have 4 vcpus.

[satish]

thank you,but i am asking how can we identify if it is a virtual server or physical

From lscpu,it is easy to identify if a server is virtual or pysical by looking into below fields

Hypervisor vendor:     VMware
Virtualization type:   full


lscpu is not working in this environment and so how to identify if the server is virtual or physical by looking into cpuinfo command

[ErmanArslansOracleBlog]

You have hypervisor flag in your /proc/cpuinfo output.
So your linux machine is a VM.

Here is one-liner for checking it;

grep -q ^flags.*\ hypervisor /proc/cpuinfo && echo "This machine is a VM"

[satish]

Thank you erman.its clear