---> uname -a:
Linux prd-centos7-docker-4c-2g-4032.vexxhost.local 3.10.0-1127.el7.x86_64 #1 SMP Tue Mar 31 23:36:51 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux

---> lscpu:
Architecture:          x86_64
CPU op-mode(s):        32-bit, 64-bit
Byte Order:            Little Endian
CPU(s):                4
On-line CPU(s) list:   0-3
Thread(s) per core:    1
Core(s) per socket:    1
Socket(s):             4
NUMA node(s):          1
Vendor ID:             GenuineIntel
CPU family:            6
Model:                 44
Model name:            Westmere E56xx/L56xx/X56xx (IBRS update)
Stepping:              1
CPU MHz:               2933.438
BogoMIPS:              5866.87
Virtualization:        VT-x
Hypervisor vendor:     KVM
Virtualization type:   full
L1d cache:             32K
L1i cache:             32K
L2 cache:              4096K
L3 cache:              16384K
NUMA node0 CPU(s):     0-3
Flags:                 fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ss syscall nx pdpe1gb rdtscp lm constant_tsc rep_good nopl xtopology eagerfpu pni pclmulqdq vmx ssse3 cx16 pcid sse4_1 sse4_2 x2apic popcnt tsc_deadline_timer aes hypervisor lahf_lm ssbd ibrs ibpb stibp tpr_shadow vnmi flexpriority ept vpid tsc_adjust arat spec_ctrl intel_stibp

---> nproc:
4

---> df -h:
Filesystem      Size  Used Avail Use% Mounted on
devtmpfs        887M     0  887M   0% /dev
tmpfs           919M     0  919M   0% /dev/shm
tmpfs           919M   17M  903M   2% /run
tmpfs           919M     0  919M   0% /sys/fs/cgroup
/dev/vda1        50G  8.6G   42G  18% /
tmpfs           184M     0  184M   0% /run/user/1001
tmpfs           184M     0  184M   0% /run/user/0

---> free -m:
              total        used        free      shared  buff/cache   available
Mem:           1837         630          73          15        1133        1008
Swap:          1023           3        1020

---> ip addr:
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host 
       valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1458 qdisc pfifo_fast state UP group default qlen 1000
    link/ether fa:16:3e:2c:f3:b8 brd ff:ff:ff:ff:ff:ff
    inet 10.30.123.126/23 brd 10.30.123.255 scope global dynamic eth0
       valid_lft 85723sec preferred_lft 85723sec
    inet6 fe80::f816:3eff:fe2c:f3b8/64 scope link 
       valid_lft forever preferred_lft forever
3: docker0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default 
    link/ether 02:42:00:ee:f7:4c brd ff:ff:ff:ff:ff:ff
    inet 10.250.0.254/24 brd 10.250.0.255 scope global docker0
       valid_lft forever preferred_lft forever
    inet6 fe80::42:ff:feee:f74c/64 scope link 
       valid_lft forever preferred_lft forever

---> sar -b -r -n DEV:
Linux 3.10.0-1127.el7.x86_64 (prd-centos7-docker-4c-2g-4032.vexxhost.local) 	10/08/2020 	_x86_64_	(4 CPU)

12:00:02 AM       tps      rtps      wtps   bread/s   bwrtn/s
12:01:01 AM     63.05      6.65     56.41    891.04   7138.57
12:02:01 AM     92.38     24.57     67.81   1071.36   8098.11
Average:        77.84     15.69     62.16    982.00   7622.60

12:00:02 AM kbmemfree kbmemused  %memused kbbuffers  kbcached  kbcommit   %commit  kbactive   kbinact   kbdirty
12:01:01 AM    100384   1781172     94.66      1620   1024340   1112600     37.97    635860    851276     19812
12:02:01 AM     98168   1783388     94.78      1456   1022804   1072396     36.60    590832    859392     29092
Average:        99276   1782280     94.72      1538   1023572   1092498     37.28    613346    855334     24452

12:00:02 AM     IFACE   rxpck/s   txpck/s    rxkB/s    txkB/s   rxcmp/s   txcmp/s  rxmcst/s
12:01:01 AM      eth0    147.06     97.23    788.39      9.79      0.00      0.00      0.00
12:01:01 AM        lo      0.00      0.00      0.00      0.00      0.00      0.00      0.00
12:01:01 AM   docker0      0.00      0.00      0.00      0.00      0.00      0.00      0.00
12:02:01 AM      eth0     43.31     34.63    116.83     40.78      0.00      0.00      0.00
12:02:01 AM        lo      0.00      0.00      0.00      0.00      0.00      0.00      0.00
12:02:01 AM   docker0      0.00      0.00      0.00      0.00      0.00      0.00      0.00
Average:         eth0     94.72     65.65    449.63     25.42      0.00      0.00      0.00
Average:           lo      0.00      0.00      0.00      0.00      0.00      0.00      0.00
Average:      docker0      0.00      0.00      0.00      0.00      0.00      0.00      0.00

---> sar -P ALL:
Linux 3.10.0-1127.el7.x86_64 (prd-centos7-docker-4c-2g-4032.vexxhost.local) 	10/08/2020 	_x86_64_	(4 CPU)

12:00:02 AM     CPU     %user     %nice   %system   %iowait    %steal     %idle
12:01:01 AM     all     14.49      0.00      1.83      0.87      3.60     79.21
12:01:01 AM       0     24.98      0.00      1.64      1.48      4.55     67.36
12:01:01 AM       1     14.04      0.00      2.20      1.32      3.16     79.28
12:01:01 AM       2     13.28      0.00      2.42      0.19      3.79     80.33
12:01:01 AM       3      6.17      0.00      1.10      0.53      2.91     89.29
12:02:01 AM     all     14.02      0.00      3.26      0.93      4.33     77.47
12:02:01 AM       0     10.54      0.00      2.34      0.14      3.68     83.31
12:02:01 AM       1     14.65      0.00      3.84      0.43      5.05     76.03
12:02:01 AM       2     18.66      0.00      4.17      1.66      4.88     70.62
12:02:01 AM       3     12.22      0.00      2.67      1.51      3.71     79.88
Average:        all     14.25      0.00      2.55      0.90      3.97     78.33
Average:          0     17.57      0.00      2.00      0.79      4.10     75.54
Average:          1     14.35      0.00      3.03      0.87      4.11     77.64
Average:          2     15.98      0.00      3.30      0.93      4.34     75.45
Average:          3      9.19      0.00      1.88      1.02      3.31     84.60