---> uname -a: Linux 83e8ca9ea2de 3.10.0-1127.el7.x86_64 #1 SMP Tue Mar 31 23:36:51 UTC 2020 x86_64 Linux ---> lscpu: Architecture: x86_64 CPU op-mode(s): 32-bit, 64-bit Byte Order: Little Endian Address sizes: 40 bits physical, 48 bits virtual 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: 128 KiB L1i cache: 128 KiB L2 cache: 16 MiB L3 cache: 64 MiB NUMA node0 CPU(s): 0-3 Vulnerability Itlb multihit: KVM: Mitigation: Split huge pages Vulnerability L1tf: Mitigation; PTE Inversion; VMX conditional cache flushes, SMT disabled Vulnerability Mds: Vulnerable: Clear CPU buffers attempted, no microcode; SMT Host state unknown Vulnerability Meltdown: Mitigation; PTI Vulnerability Spec store bypass: Mitigation; Speculative Store Bypass disabled via prctl and seccomp Vulnerability Spectre v1: Mitigation; Load fences, usercopy/swapgs barriers and __user pointer sanitization Vulnerability Spectre v2: Mitigation; Full retpoline, IBPB Vulnerability Tsx async abort: Not affected 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 Available Use% Mounted on overlay 50.0G 6.9G 43.0G 14% / tmpfs 64.0M 0 64.0M 0% /dev tmpfs 918.7M 0 918.7M 0% /sys/fs/cgroup shm 64.0M 0 64.0M 0% /dev/shm /dev/vda1 50.0G 6.9G 43.0G 14% /etc/resolv.conf /dev/vda1 50.0G 6.9G 43.0G 14% /etc/hostname /dev/vda1 50.0G 6.9G 43.0G 14% /etc/hosts /dev/vda1 50.0G 6.9G 43.0G 14% /var/log/sa-host /dev/vda1 50.0G 6.9G 43.0G 14% /w/workspace/xfoundry_device-modbus-go_PR-171 /dev/vda1 50.0G 6.9G 43.0G 14% /w/workspace/xfoundry_device-modbus-go_PR-171@tmp ---> free -m: total used free shared buff/cache available Mem: 1837 637 135 0 1064 1092 Swap: 1023 1 1022 ---> ip addr: 1: lo: mtu 65536 qdisc noqueue state UNKNOWN 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 6: eth0@if7: mtu 1458 qdisc noqueue state UP link/ether 02:42:0a:fa:00:01 brd ff:ff:ff:ff:ff:ff inet 10.250.0.1/24 brd 10.250.0.255 scope global eth0 valid_lft forever preferred_lft forever ---> sar -b -r -n DEV: Linux 3.10.0-1127.el7.x86_64 (centos-7-docker-5eb134fb-50d3-af0a-1802-9f6851a35141.vexxhost.lo) 09/18/20 _x86_64_ (4 CPU) 16:51:53 LINUX RESTART (4 CPU) 16:53:01 tps rtps wtps dtps bread/s bwrtn/s bdscd/s 16:54:02 3.60 0.00 3.60 0.00 0.00 111.54 0.00 16:55:01 0.41 0.00 0.41 0.00 0.00 5.66 0.00 16:56:01 0.22 0.00 0.22 0.00 0.00 2.27 0.00 16:57:01 0.37 0.00 0.37 0.00 0.00 5.05 0.00 Average: 1.15 0.00 1.15 0.00 0.00 31.24 0.00 16:53:01 kbmemfree kbavail kbmemused %memused kbbuffers kbcached kbcommit %commit kbactive kbinact kbdirty 16:54:02 186824 0 558948 29.71 2600 1133184 1103824 37.67 409232 1126464 16 16:55:01 189412 0 556356 29.57 2600 1133188 1081268 36.90 411084 1122788 12 16:56:01 188888 0 556872 29.60 2600 1133196 1081364 36.91 411684 1122792 16 16:57:01 186812 0 558948 29.71 2600 1133196 1081388 36.91 416188 1120116 8 Average: 187984 0 557781 29.64 2600 1133191 1086961 37.10 412047 1123040 13 16:53:01 IFACE rxpck/s txpck/s rxkB/s txkB/s rxcmp/s txcmp/s rxmcst/s %ifutil 16:54:02 eth0 0.32 0.15 0.02 0.05 0.00 0.00 0.00 0.00 16:54:02 lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 16:54:02 docker0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 16:55:01 eth0 2.93 1.15 3.04 0.08 0.00 0.00 0.00 0.00 16:55:01 lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 16:55:01 docker0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 16:56:01 eth0 0.98 0.28 0.32 0.20 0.00 0.00 0.00 0.00 16:56:01 lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 16:56:01 docker0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 16:57:01 eth0 0.53 0.38 0.27 0.21 0.00 0.00 0.00 0.00 16:57:01 lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 16:57:01 docker0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Average: eth0 1.18 0.49 0.90 0.13 0.00 0.00 0.00 0.00 Average: lo 0.00 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 0.00 ---> sar -P ALL: Linux 3.10.0-1127.el7.x86_64 (centos-7-docker-5eb134fb-50d3-af0a-1802-9f6851a35141.vexxhost.lo) 09/18/20 _x86_64_ (4 CPU) 16:51:53 LINUX RESTART (4 CPU) 16:53:01 CPU %user %nice %system %iowait %steal %idle 16:54:02 all 0.19 0.00 0.05 0.00 0.00 99.76 16:54:02 0 0.07 0.00 0.07 0.00 0.00 99.87 16:54:02 1 0.07 0.00 0.05 0.00 0.00 99.88 16:54:02 2 0.42 0.00 0.05 0.00 0.00 99.53 16:54:02 3 0.20 0.00 0.05 0.00 0.00 99.75 16:55:01 all 0.19 0.00 0.04 0.00 0.00 99.78 16:55:01 0 0.07 0.00 0.05 0.00 0.00 99.88 16:55:01 1 0.05 0.00 0.03 0.00 0.00 99.92 16:55:01 2 0.59 0.00 0.05 0.00 0.00 99.36 16:55:01 3 0.03 0.00 0.02 0.00 0.00 99.95 16:56:01 all 0.08 0.00 0.03 0.00 0.00 99.89 16:56:01 0 0.05 0.00 0.02 0.00 0.00 99.93 16:56:01 1 0.03 0.00 0.02 0.00 0.00 99.95 16:56:01 2 0.22 0.00 0.07 0.00 0.00 99.72 16:56:01 3 0.03 0.00 0.02 0.00 0.00 99.95 16:57:01 all 0.07 0.00 0.05 0.00 0.00 99.88 16:57:01 0 0.03 0.00 0.08 0.00 0.00 99.88 16:57:01 1 0.03 0.00 0.03 0.00 0.00 99.93 16:57:01 2 0.18 0.00 0.05 0.00 0.00 99.77 16:57:01 3 0.02 0.00 0.03 0.00 0.00 99.95 Average: all 0.13 0.00 0.04 0.00 0.00 99.83 Average: 0 0.05 0.00 0.05 0.00 0.00 99.89 Average: 1 0.05 0.00 0.03 0.00 0.00 99.92 Average: 2 0.35 0.00 0.05 0.00 0.00 99.59 Average: 3 0.07 0.00 0.03 0.00 0.00 99.90