---> uname -a: Linux d1b7e9043ad4 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 8.5G 41.5G 17% / 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 8.5G 41.5G 17% /etc/resolv.conf /dev/vda1 50.0G 8.5G 41.5G 17% /etc/hostname /dev/vda1 50.0G 8.5G 41.5G 17% /etc/hosts /dev/vda1 50.0G 8.5G 41.5G 17% /var/log/sa /dev/vda1 50.0G 8.5G 41.5G 17% /w/workspace/xfoundry_device-modbus-go_master /dev/vda1 50.0G 8.5G 41.5G 17% /w/workspace/xfoundry_device-modbus-go_master@tmp ---> free -m: total used free shared buff/cache available Mem: 1837 791 108 0 937 979 Swap: 1023 3 1020 ---> 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 24: eth0@if25: 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) 06/05/20 _x86_64_ (4 CPU) 13:13:06 LINUX RESTART 13:14:01 tps rtps wtps bread/s bwrtn/s 13:15:01 5.15 0.57 4.58 8.93 134.49 13:16:01 0.30 0.00 0.30 0.00 4.90 13:17:01 0.33 0.00 0.33 0.00 4.36 13:18:01 0.27 0.00 0.27 0.00 3.10 13:19:01 0.17 0.00 0.17 0.00 1.82 13:20:01 0.37 0.02 0.35 0.13 4.86 13:21:01 0.25 0.00 0.25 0.00 2.57 13:22:01 0.27 0.00 0.27 0.00 3.08 13:23:02 92.67 43.76 48.91 1700.72 20451.72 13:24:01 307.26 153.34 153.92 6769.88 38236.37 Average: 40.28 19.56 20.72 838.59 5833.70 13:14:01 kbmemfree kbmemused %memused kbbuffers kbcached kbcommit %commit kbactive kbinact kbdirty 13:15:01 171080 1710476 90.91 2620 1122496 1112928 37.98 426000 1125320 20 13:16:01 172988 1708568 90.81 2620 1122500 1079876 36.85 426744 1123368 20 13:17:01 171936 1709620 90.86 2620 1122508 1080068 36.86 427756 1123368 8 13:18:01 170900 1710656 90.92 2620 1122508 1079804 36.85 431368 1120664 8 13:19:01 170796 1710760 90.92 2620 1122516 1079876 36.85 438068 1114328 12 13:20:01 170848 1710708 90.92 2620 1122528 1079980 36.86 438260 1114264 12 13:21:01 171208 1710348 90.90 2620 1122528 1079932 36.86 435940 1116312 8 13:22:01 171068 1710488 90.91 2620 1122536 1079932 36.86 435964 1116312 8 13:23:02 76616 1804940 95.93 2620 1097396 1495936 51.05 495208 1106236 28992 13:24:01 129428 1752128 93.12 1564 981360 1321416 45.10 576780 888128 71088 Average: 157687 1723869 91.62 2514 1105888 1148975 39.21 453209 1094830 10018 13:14:01 IFACE rxpck/s txpck/s rxkB/s txkB/s rxcmp/s txcmp/s rxmcst/s 13:15:01 eth0 7.91 5.36 6.70 5.58 0.00 0.00 0.00 13:15:01 lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 13:15:01 docker0 0.00 0.02 0.00 0.00 0.00 0.00 0.00 13:16:01 eth0 2.88 1.27 2.89 0.08 0.00 0.00 0.00 13:16:01 lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 13:16:01 docker0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 13:17:01 eth0 1.07 0.77 0.58 0.41 0.00 0.00 0.00 13:17:01 lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 13:17:01 docker0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 13:18:01 eth0 0.07 0.05 0.01 0.00 0.00 0.00 0.00 13:18:01 lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 13:18:01 docker0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 13:19:01 eth0 0.18 0.13 0.08 0.07 0.00 0.00 0.00 13:19:01 lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 13:19:01 docker0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 13:20:01 eth0 0.17 0.10 0.07 0.01 0.00 0.00 0.00 13:20:01 lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 13:20:01 docker0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 13:21:01 eth0 0.08 0.15 0.01 0.01 0.00 0.00 0.00 13:21:01 lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 13:21:01 docker0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 13:22:01 eth0 0.08 0.08 0.01 0.01 0.00 0.00 0.00 13:22:01 lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 13:22:01 docker0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 13:23:02 eth0 138.45 93.72 3769.88 10.95 0.00 0.00 0.00 13:23:02 lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 13:23:02 docker0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 13:24:01 eth0 247.54 183.62 3516.31 87.75 0.00 0.00 0.00 13:24:01 lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 13:24:01 docker0 24.45 25.93 2.84 52.46 0.00 0.00 0.00 Average: eth0 39.52 28.28 725.29 10.36 0.00 0.00 0.00 Average: lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Average: docker0 2.41 2.56 0.28 5.17 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) 06/05/20 _x86_64_ (4 CPU) 13:13:06 LINUX RESTART 13:14:01 CPU %user %nice %system %iowait %steal %idle 13:15:01 all 0.61 0.00 0.12 0.02 0.00 99.25 13:15:01 0 1.10 0.00 0.08 0.02 0.00 98.80 13:15:01 1 0.43 0.00 0.20 0.02 0.00 99.35 13:15:01 2 0.67 0.00 0.10 0.03 0.00 99.20 13:15:01 3 0.22 0.00 0.15 0.03 0.02 99.58 13:16:01 all 0.17 0.00 0.03 0.00 0.00 99.80 13:16:01 0 0.40 0.00 0.02 0.00 0.00 99.58 13:16:01 1 0.08 0.00 0.03 0.00 0.00 99.88 13:16:01 2 0.15 0.00 0.02 0.00 0.00 99.83 13:16:01 3 0.07 0.00 0.03 0.00 0.00 99.90 13:17:01 all 0.16 0.00 0.03 0.00 0.00 99.80 13:17:01 0 0.50 0.00 0.00 0.00 0.00 99.50 13:17:01 1 0.05 0.00 0.07 0.00 0.00 99.88 13:17:01 2 0.02 0.00 0.02 0.00 0.00 99.97 13:17:01 3 0.05 0.00 0.02 0.00 0.00 99.93 13:18:01 all 0.15 0.00 0.03 0.00 0.00 99.83 13:18:01 0 0.52 0.00 0.02 0.00 0.00 99.47 13:18:01 1 0.03 0.00 0.02 0.00 0.00 99.95 13:18:01 2 0.02 0.00 0.03 0.00 0.00 99.95 13:18:01 3 0.02 0.00 0.05 0.00 0.00 99.93 13:19:01 all 0.17 0.00 0.04 0.00 0.00 99.79 13:19:01 0 0.50 0.00 0.00 0.00 0.00 99.50 13:19:01 1 0.07 0.00 0.03 0.00 0.00 99.90 13:19:01 2 0.03 0.00 0.10 0.00 0.00 99.87 13:19:01 3 0.07 0.00 0.05 0.00 0.00 99.88 13:20:01 all 0.14 0.00 0.03 0.00 0.00 99.83 13:20:01 0 0.50 0.00 0.02 0.00 0.00 99.48 13:20:01 1 0.03 0.00 0.03 0.00 0.00 99.93 13:20:01 2 0.02 0.00 0.05 0.00 0.00 99.93 13:20:01 3 0.03 0.00 0.00 0.00 0.00 99.97 13:21:01 all 0.15 0.00 0.02 0.00 0.00 99.83 13:21:01 0 0.52 0.00 0.03 0.00 0.00 99.45 13:21:01 1 0.03 0.00 0.03 0.00 0.00 99.93 13:21:01 2 0.02 0.00 0.02 0.00 0.00 99.97 13:21:01 3 0.03 0.00 0.03 0.00 0.00 99.93 13:22:01 all 0.14 0.00 0.02 0.00 0.00 99.84 13:22:01 0 0.52 0.00 0.02 0.00 0.00 99.47 13:22:01 1 0.02 0.00 0.02 0.00 0.00 99.97 13:22:01 2 0.00 0.00 0.02 0.00 0.00 99.98 13:22:01 3 0.02 0.00 0.00 0.00 0.00 99.98 13:23:02 all 4.68 0.00 2.45 0.70 0.02 92.16 13:23:02 0 5.00 0.00 2.51 0.48 0.02 91.99 13:23:02 1 4.67 0.00 1.98 0.12 0.02 93.22 13:23:02 2 4.72 0.00 2.69 1.27 0.02 91.30 13:23:02 3 4.33 0.00 2.61 0.90 0.03 92.12 13:24:01 all 12.03 0.00 7.23 2.79 0.04 77.90 13:24:01 0 11.31 0.00 7.10 2.28 0.05 79.25 13:24:01 1 11.99 0.00 6.96 3.55 0.02 77.49 13:24:01 2 13.19 0.00 7.58 2.23 0.03 76.97 13:24:01 3 11.65 0.00 7.28 3.11 0.03 77.92 Average: all 1.81 0.00 0.98 0.34 0.01 96.86 Average: 0 2.06 0.00 0.96 0.27 0.01 96.70 Average: 1 1.71 0.00 0.92 0.36 0.00 97.01 Average: 2 1.85 0.00 1.04 0.35 0.01 96.76 Average: 3 1.62 0.00 1.00 0.40 0.01 96.98