---> uname -a: Linux d85f9227ed12 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: 2933.442 BogoMIPS: 5866.88 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/undry_go-mod-configuration_PR-13 /dev/vda1 50.0G 6.9G 43.0G 14% /w/workspace/undry_go-mod-configuration_PR-13@tmp ---> free -m: total used free shared buff/cache available Mem: 1837 653 135 0 1047 1077 Swap: 1023 0 1023 ---> 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) 09/15/20 _x86_64_ (4 CPU) 22:28:13 LINUX RESTART (4 CPU) 22:29:02 tps rtps wtps dtps bread/s bwrtn/s bdscd/s 22:30:01 37.51 11.49 26.02 0.00 4541.46 2159.15 0.00 22:31:01 1.58 0.00 1.58 0.00 0.00 26.71 0.00 22:32:01 0.27 0.00 0.27 0.00 0.00 3.76 0.00 Average: 12.99 3.79 9.20 0.00 1497.18 722.02 0.00 22:29:02 kbmemfree kbavail kbmemused %memused kbbuffers kbcached kbcommit %commit kbactive kbinact kbdirty 22:30:01 171364 0 572760 30.44 2620 1134812 1106368 37.76 407196 1143504 16 22:31:01 174788 0 569332 30.26 2620 1134816 1073016 36.62 407208 1140188 8 22:32:01 172144 0 571964 30.40 2620 1134828 1073208 36.63 410320 1140184 8 Average: 172765 0 571352 30.37 2620 1134819 1084197 37.00 408241 1141292 11 22:29:02 IFACE rxpck/s txpck/s rxkB/s txkB/s rxcmp/s txcmp/s rxmcst/s %ifutil 22:30:01 eth0 168.36 120.55 455.75 37.58 0.00 0.00 0.00 0.00 22:30:01 lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 22:30:01 docker0 0.74 0.74 0.12 0.67 0.00 0.00 0.00 0.00 22:31:01 eth0 1.08 0.07 0.11 0.01 0.00 0.00 0.00 0.00 22:31:01 lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 22:31:01 docker0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 22:32:01 eth0 0.82 0.42 0.33 0.21 0.00 0.00 0.00 0.00 22:32:01 lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 22:32:01 docker0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Average: eth0 56.14 39.90 150.39 12.46 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 0.25 0.25 0.04 0.22 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) 09/15/20 _x86_64_ (4 CPU) 22:28:13 LINUX RESTART (4 CPU) 22:29:02 CPU %user %nice %system %iowait %steal %idle 22:30:01 all 3.09 0.00 1.81 1.32 0.01 93.78 22:30:01 0 3.06 0.00 1.92 0.61 0.02 94.38 22:30:01 1 2.74 0.00 1.34 0.53 0.00 95.39 22:30:01 2 3.21 0.00 1.97 2.33 0.02 92.47 22:30:01 3 3.34 0.00 1.99 1.80 0.00 92.87 22:31:01 all 0.16 0.00 0.04 0.00 0.00 99.80 22:31:01 0 0.52 0.00 0.03 0.00 0.00 99.45 22:31:01 1 0.03 0.00 0.05 0.00 0.00 99.92 22:31:01 2 0.05 0.00 0.05 0.00 0.00 99.90 22:31:01 3 0.03 0.00 0.03 0.00 0.02 99.92 22:32:01 all 0.18 0.00 0.03 0.00 0.00 99.78 22:32:01 0 0.50 0.00 0.02 0.00 0.00 99.48 22:32:01 1 0.07 0.00 0.05 0.00 0.00 99.88 22:32:01 2 0.10 0.00 0.05 0.00 0.00 99.85 22:32:01 3 0.07 0.00 0.02 0.00 0.00 99.92 Average: all 1.13 0.00 0.62 0.43 0.00 97.81 Average: 0 1.35 0.00 0.65 0.20 0.01 97.80 Average: 1 0.93 0.00 0.48 0.17 0.00 98.42 Average: 2 1.11 0.00 0.68 0.77 0.01 97.44 Average: 3 1.13 0.00 0.67 0.59 0.01 97.60