Determine process which consumed CPU cores

[Fred Smith]

On Mon, Sep 23, 2019 at 08:45:36AM +0530, Kaushal Shriyan wrote:
> Hi,
> 
> Checking in again if someone can pitch in for help. Thanks in advance and i
> look forward to hearing from you.
at the time it is hapening, top can be your friend. later on, I don't know.

> > Hi,
> >
> > Is there a way to find out which process consumed CPU cores as per the
> > below sar output? OS is Red Hat Enterprise Linux Server release 7.7 (Maipo)
> > with 64-bit arch.
> >
> > 04:40:01 PM     CPU     %user     %nice   %system   %iowait    %steal
> > %idle
> > 04:50:01 PM     all      4.25      0.00      0.69      0.00      0.03
> > 95.03
> > 05:00:01 PM     all      4.41      0.00      0.70      0.00      0.03
> > 94.85
> >
> >
> > *05:10:02 PM     all     40.92      0.01      1.23      0.01      0.06
> > 57.7705:20:01 PM     all     90.54      0.00      0.90      0.00      0.02
> >      8.5305:30:01 PM     all     19.06      0.00      1.53      1.25
> >  0.04     78.12*
> > 05:40:01 PM     all      3.99      0.00      0.29      0.03      0.02
> > 95.66
> > 05:50:01 PM     all      2.97      0.00      0.25      0.00      0.02
> > 96.75
> > 06:00:01 PM     all      2.69      0.00      0.24      0.00      0.02
> > 97.04
> > 06:10:01 PM     all      2.61      0.01      0.26      0.00      0.02
> > 97.09
> >
> > # lscpu
> > Architecture:          x86_64
> > CPU op-mode(s):        32-bit, 64-bit
> > Byte Order:            Little Endian
> > CPU(s):                8
> > On-line CPU(s) list:   0-7
> > Thread(s) per core:    2
> > Core(s) per socket:    4
> > Socket(s):             1
> > NUMA node(s):          1
> > Vendor ID:             GenuineIntel
> > CPU family:            6
> > Model:                 63
> > Model name:            Intel(R) Xeon(R) CPU E5-2666 v3 @ 2.90GHz
> > Stepping:              2
> > CPU MHz:               2899.842
> > BogoMIPS:              5800.13
> > Hypervisor vendor:     Xen
> > Virtualization type:   full
> > L1d cache:             32K
> > L1i cache:             32K
> > L2 cache:              256K
> > L3 cache:              25600K
> > NUMA node0 CPU(s):     0-7
> > 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 pdpe1gb
> > rdtscp lm constant_tsc rep_good nopl xtopology 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 invpcid_single fsgsbase bmi1
> > avx2 smep bmi2 erms invpcid xsaveopt
> > # nproc
> > 8

-- 
---- Fred Smith -- fredex at fcshome.stoneham.ma.us ----------------------------
                    Do you not know? Have you not heard? 
    The LORD is the everlasting God, the Creator of the ends of the earth. 
  He will not grow tired or weary, and his understanding no one can fathom.
----------------------------- Isaiah 40:28 (niv) -----------------------------