---> uname -a: Linux 2637b7af55b8 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: 2933.436 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 7.2G 42.8G 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 7.2G 42.8G 14% /etc/resolv.conf /dev/vda1 50.0G 7.2G 42.8G 14% /etc/hostname /dev/vda1 50.0G 7.2G 42.8G 14% /etc/hosts /dev/vda1 50.0G 7.2G 42.8G 14% /var/log/sa /dev/vda1 50.0G 7.2G 42.8G 14% /w/workspace/undry_go-mod-configuration_PR-11 /dev/vda1 50.0G 7.2G 42.8G 14% /w/workspace/undry_go-mod-configuration_PR-11@tmp ---> free -m: total used free shared buff/cache available Mem: 1837 662 130 0 1044 1069 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) 06/18/20 _x86_64_ (4 CPU) 13:41:46 LINUX RESTART 13:43:01 tps rtps wtps bread/s bwrtn/s 13:44:01 1.88 0.00 1.88 0.00 39.76 13:45:01 0.43 0.00 0.43 0.00 6.21 13:46:01 0.40 0.00 0.40 0.00 5.33 13:47:01 142.61 97.90 44.71 5672.33 16978.09 Average: 36.33 24.48 11.86 1418.26 4257.88 13:43:01 kbmemfree kbmemused %memused kbbuffers kbcached kbcommit %commit kbactive kbinact kbdirty 13:44:01 170728 1710828 90.93 2620 1131036 1081244 36.90 439048 1113272 16 13:45:01 168280 1713276 91.06 2620 1131040 1081460 36.91 442612 1112796 8 13:46:01 167280 1714276 91.11 2620 1131048 1081496 36.91 442732 1112800 12 13:47:01 169880 1711676 90.97 2620 1082984 1091384 37.25 430052 1080480 83300 Average: 169042 1712514 91.02 2620 1119027 1083896 36.99 438611 1104837 20834 13:43:01 IFACE rxpck/s txpck/s rxkB/s txkB/s rxcmp/s txcmp/s rxmcst/s 13:44:01 eth0 0.75 0.07 0.06 0.00 0.00 0.00 0.00 13:44:01 lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 13:44:01 docker0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 13:45:01 eth0 0.65 0.25 0.29 0.19 0.00 0.00 0.00 13:45:01 lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 13:45:01 docker0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 13:46:01 eth0 0.63 0.40 0.29 0.20 0.00 0.00 0.00 13:46:01 lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 13:46:01 docker0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 13:47:01 eth0 88.64 59.76 2332.39 11.34 0.00 0.00 0.00 13:47:01 lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 13:47:01 docker0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Average: eth0 22.67 15.12 583.33 2.94 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 (centos-7-docker-5eb134fb-50d3-af0a-1802-9f6851a35141.vexxhost.lo) 06/18/20 _x86_64_ (4 CPU) 13:41:46 LINUX RESTART 13:43:01 CPU %user %nice %system %iowait %steal %idle 13:44:01 all 0.16 0.00 0.06 0.00 0.02 99.75 13:44:01 0 0.03 0.00 0.03 0.00 0.02 99.92 13:44:01 1 0.03 0.00 0.07 0.00 0.00 99.90 13:44:01 2 0.05 0.00 0.05 0.00 0.05 99.85 13:44:01 3 0.52 0.00 0.07 0.00 0.05 99.37 13:45:01 all 0.17 0.00 0.03 0.00 0.02 99.79 13:45:01 0 0.03 0.00 0.03 0.00 0.00 99.93 13:45:01 1 0.05 0.00 0.03 0.00 0.02 99.90 13:45:01 2 0.07 0.00 0.03 0.00 0.00 99.90 13:45:01 3 0.53 0.00 0.03 0.00 0.03 99.40 13:46:01 all 0.16 0.00 0.03 0.00 0.01 99.80 13:46:01 0 0.02 0.00 0.02 0.00 0.00 99.97 13:46:01 1 0.03 0.00 0.03 0.00 0.00 99.93 13:46:01 2 0.05 0.00 0.02 0.00 0.03 99.90 13:46:01 3 0.52 0.00 0.03 0.00 0.02 99.43 13:47:01 all 5.52 0.00 3.14 1.82 0.32 89.20 13:47:01 0 5.40 0.00 2.78 2.06 0.27 89.50 13:47:01 1 4.71 0.00 3.40 0.77 0.34 90.78 13:47:01 2 4.94 0.00 3.56 1.31 0.32 89.87 13:47:01 3 7.05 0.00 2.80 3.12 0.35 86.68 Average: all 1.49 0.00 0.81 0.45 0.09 97.16 Average: 0 1.36 0.00 0.71 0.51 0.07 97.35 Average: 1 1.20 0.00 0.88 0.19 0.09 97.64 Average: 2 1.27 0.00 0.91 0.33 0.10 97.40 Average: 3 2.14 0.00 0.73 0.77 0.11 96.25