---> uname -a: Linux 9b1647604cc4 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 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 787 113 0 936 979 Swap: 1023 2 1021 ---> 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) 09/01/20 _x86_64_ (4 CPU) 01:53:34 LINUX RESTART 01:54:01 tps rtps wtps bread/s bwrtn/s 01:55:03 153.47 65.52 87.95 8464.00 40192.16 01:56:01 2.72 0.00 2.72 0.00 99.59 01:57:01 0.28 0.00 0.28 0.00 3.80 01:58:01 0.52 0.00 0.52 0.00 7.46 01:59:01 0.15 0.00 0.15 0.00 1.62 02:00:01 256.06 147.95 108.11 6778.56 32038.86 02:01:01 221.43 85.99 135.44 4526.46 32695.56 Average: 91.12 43.00 48.12 2838.74 15082.92 01:54:01 kbmemfree kbmemused %memused kbbuffers kbcached kbcommit %commit kbactive kbinact kbdirty 01:55:03 169592 1711964 90.99 2620 1146028 1127976 38.50 429680 1122376 116 01:56:01 175832 1705724 90.65 2620 1146116 1080244 36.87 426764 1119912 20 01:57:01 174128 1707428 90.75 2620 1146120 1080460 36.87 428708 1119900 20 01:58:01 175252 1706304 90.69 2620 1146124 1080244 36.87 427704 1119900 8 01:59:01 173608 1707948 90.77 2620 1146128 1080244 36.87 431988 1117336 8 02:00:01 154596 1726960 91.78 2596 1035164 1407580 48.04 567056 964504 52 02:01:01 226796 1654760 87.95 1504 901376 1326960 45.29 606104 762380 44 Average: 178543 1703013 90.51 2457 1095294 1169101 39.90 474001 1046615 38 01:54:01 IFACE rxpck/s txpck/s rxkB/s txkB/s rxcmp/s txcmp/s rxmcst/s 01:55:03 eth0 400.68 239.41 1043.65 85.52 0.00 0.00 0.00 01:55:03 lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 01:55:03 docker0 1.88 1.73 0.34 3.62 0.00 0.00 0.00 01:56:01 eth0 0.71 0.07 0.06 0.01 0.00 0.00 0.00 01:56:01 lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 01:56:01 docker0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 01:57:01 eth0 0.63 0.45 0.31 0.21 0.00 0.00 0.00 01:57:01 lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 01:57:01 docker0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 01:58:01 eth0 0.08 0.07 0.01 0.01 0.00 0.00 0.00 01:58:01 lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 01:58:01 docker0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 01:59:01 eth0 0.10 0.08 0.01 0.01 0.00 0.00 0.00 01:59:01 lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 01:59:01 docker0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 02:00:01 veth90d5d09 0.40 0.35 0.08 0.16 0.00 0.00 0.00 02:00:01 eth0 663.86 429.63 5102.01 167.17 0.00 0.00 0.00 02:00:01 lo 0.12 0.12 0.01 0.01 0.00 0.00 0.00 02:00:01 docker0 23.72 20.94 2.87 53.89 0.00 0.00 0.00 02:01:01 veth691a8e9 0.88 0.57 0.14 0.11 0.00 0.00 0.00 02:01:01 eth0 233.39 169.37 3447.96 76.45 0.00 0.00 0.00 02:01:01 lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 02:01:01 docker0 27.42 32.68 1.64 200.36 0.00 0.00 0.00 Average: veth691a8e9 0.13 0.08 0.02 0.02 0.00 0.00 0.00 Average: eth0 128.83 86.01 1227.72 34.98 0.00 0.00 0.00 Average: lo 0.02 0.02 0.00 0.00 0.00 0.00 0.00 Average: docker0 7.34 7.70 0.65 36.51 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) 09/01/20 _x86_64_ (4 CPU) 01:53:34 LINUX RESTART 01:54:01 CPU %user %nice %system %iowait %steal %idle 01:55:03 all 15.86 0.00 8.41 4.73 0.07 70.93 01:55:03 0 16.34 0.00 9.16 4.73 0.07 69.70 01:55:03 1 15.55 0.00 8.11 4.33 0.08 71.93 01:55:03 2 15.06 0.00 8.29 4.88 0.07 71.71 01:55:03 3 16.46 0.00 8.08 5.00 0.05 70.41 01:56:01 all 0.16 0.00 0.06 0.00 0.00 99.78 01:56:01 0 0.02 0.00 0.05 0.00 0.00 99.93 01:56:01 1 0.48 0.00 0.09 0.00 0.00 99.43 01:56:01 2 0.07 0.00 0.05 0.00 0.00 99.88 01:56:01 3 0.09 0.00 0.07 0.00 0.02 99.83 01:57:01 all 0.17 0.00 0.04 0.00 0.00 99.78 01:57:01 0 0.02 0.00 0.02 0.00 0.00 99.97 01:57:01 1 0.57 0.00 0.05 0.00 0.00 99.38 01:57:01 2 0.08 0.00 0.07 0.00 0.00 99.85 01:57:01 3 0.03 0.00 0.03 0.00 0.00 99.93 01:58:01 all 0.16 0.00 0.03 0.00 0.00 99.81 01:58:01 0 0.02 0.00 0.02 0.00 0.00 99.97 01:58:01 1 0.53 0.00 0.03 0.00 0.00 99.43 01:58:01 2 0.03 0.00 0.03 0.00 0.00 99.93 01:58:01 3 0.05 0.00 0.03 0.00 0.00 99.92 01:59:01 all 0.15 0.00 0.04 0.00 0.00 99.81 01:59:01 0 0.00 0.00 0.02 0.00 0.00 99.98 01:59:01 1 0.55 0.00 0.08 0.00 0.00 99.37 01:59:01 2 0.02 0.00 0.05 0.00 0.00 99.93 01:59:01 3 0.02 0.00 0.03 0.00 0.00 99.95 02:00:01 all 9.51 0.00 6.30 2.79 0.03 81.37 02:00:01 0 9.01 0.00 6.19 4.34 0.03 80.43 02:00:01 1 10.27 0.00 6.67 2.48 0.03 80.54 02:00:01 2 9.66 0.00 5.94 1.94 0.05 82.40 02:00:01 3 9.13 0.00 6.37 2.39 0.02 82.10 02:01:01 all 10.90 0.00 8.06 2.76 0.03 78.24 02:01:01 0 10.47 0.00 9.12 1.23 0.03 79.14 02:01:01 1 10.08 0.00 7.32 4.40 0.02 78.19 02:01:01 2 12.74 0.00 8.09 4.25 0.03 74.89 02:01:01 3 10.33 0.00 7.72 1.22 0.03 80.70 Average: all 5.26 0.00 3.27 1.47 0.02 89.99 Average: 0 5.11 0.00 3.50 1.47 0.02 89.90 Average: 1 5.42 0.00 3.18 1.60 0.02 89.79 Average: 2 5.37 0.00 3.21 1.58 0.02 89.82 Average: 3 5.14 0.00 3.18 1.23 0.02 90.44