---> uname -a: Linux a60fdb94f31c 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 787 125 0 925 982 Swap: 1023 4 1019 ---> 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) 08/19/20 _x86_64_ (4 CPU) 20:39:56 LINUX RESTART 20:41:02 tps rtps wtps bread/s bwrtn/s 20:42:01 6.25 2.12 4.13 101.88 120.41 20:43:01 0.27 0.00 0.27 0.00 3.65 20:44:01 0.30 0.00 0.30 0.00 4.73 20:45:01 0.23 0.00 0.23 0.00 2.83 20:46:01 0.23 0.00 0.23 0.00 3.75 20:47:01 0.35 0.02 0.33 0.13 3.63 20:48:01 0.25 0.00 0.25 0.00 2.70 20:49:01 0.23 0.00 0.23 0.00 3.35 20:50:01 0.23 0.00 0.23 0.00 2.73 20:51:01 254.76 150.02 104.74 6656.72 32106.39 20:52:01 240.66 113.26 127.39 6808.32 32680.01 Average: 45.88 24.18 21.71 1235.78 5915.23 20:41:02 kbmemfree kbmemused %memused kbbuffers kbcached kbcommit %commit kbactive kbinact kbdirty 20:42:01 167064 1714492 91.12 2620 1147252 1112852 37.98 416764 1138580 20 20:43:01 166548 1715008 91.15 2620 1147256 1108656 37.84 418296 1137824 24 20:44:01 166200 1715356 91.17 2620 1147264 1107740 37.81 418752 1137824 8 20:45:01 165068 1716488 91.23 2620 1147264 1107692 37.80 420516 1137292 20 20:46:01 165552 1716004 91.20 2620 1147272 1100560 37.56 423312 1133932 16 20:47:01 165636 1715920 91.20 2620 1147280 1100572 37.56 423400 1133928 12 20:48:01 165656 1715900 91.20 2620 1147280 1100596 37.56 415900 1141552 8 20:49:01 167924 1713632 91.08 2620 1147288 1083084 36.96 414416 1140924 16 20:50:01 167868 1713688 91.08 2620 1147292 1083084 36.96 414420 1140924 12 20:51:01 191184 1690372 89.84 2596 1041540 1111560 37.94 528528 965800 36 20:52:01 154028 1727528 91.81 1824 969976 1136696 38.79 622208 815784 104 Average: 167521 1714035 91.10 2545 1121542 1104827 37.71 446956 1093124 25 20:41:02 IFACE rxpck/s txpck/s rxkB/s txkB/s rxcmp/s txcmp/s rxmcst/s 20:42:01 eth0 10.67 5.62 8.81 5.63 0.00 0.00 0.00 20:42:01 lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 20:42:01 docker0 0.00 0.02 0.00 0.00 0.00 0.00 0.00 20:43:01 eth0 2.95 0.55 0.74 0.43 0.00 0.00 0.00 20:43:01 lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 20:43:01 docker0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 20:44:01 eth0 3.21 0.73 0.96 0.55 0.00 0.00 0.00 20:44:01 lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 20:44:01 docker0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 20:45:01 eth0 2.83 0.62 0.70 0.43 0.00 0.00 0.00 20:45:01 lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 20:45:01 docker0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 20:46:01 eth0 2.40 0.63 0.78 0.46 0.00 0.00 0.00 20:46:01 lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 20:46:01 docker0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 20:47:01 eth0 1.38 0.65 0.58 0.40 0.00 0.00 0.00 20:47:01 lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 20:47:01 docker0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 20:48:01 eth0 0.37 0.32 0.26 0.14 0.00 0.00 0.00 20:48:01 lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 20:48:01 docker0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 20:49:01 eth0 0.13 0.08 0.01 0.07 0.00 0.00 0.00 20:49:01 lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 20:49:01 docker0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 20:50:01 eth0 0.22 0.08 0.01 0.01 0.00 0.00 0.00 20:50:01 lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 20:50:01 docker0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 20:51:01 eth0 238.90 175.43 4026.04 85.27 0.00 0.00 0.00 20:51:01 lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 20:51:01 docker0 23.75 20.52 2.73 51.74 0.00 0.00 0.00 20:52:01 eth0 230.59 168.51 3438.15 79.09 0.00 0.00 0.00 20:52:01 lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 20:52:01 docker0 26.19 31.92 1.54 186.16 0.00 0.00 0.00 Average: eth0 44.95 32.17 681.13 15.70 0.00 0.00 0.00 Average: lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Average: docker0 4.55 4.78 0.39 21.67 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) 08/19/20 _x86_64_ (4 CPU) 20:39:56 LINUX RESTART 20:41:02 CPU %user %nice %system %iowait %steal %idle 20:42:01 all 0.55 0.00 0.14 0.03 0.00 99.28 20:42:01 0 0.49 0.00 0.15 0.02 0.00 99.34 20:42:01 1 0.64 0.00 0.07 0.00 0.00 99.29 20:42:01 2 0.36 0.00 0.15 0.12 0.00 99.37 20:42:01 3 0.70 0.00 0.15 0.00 0.00 99.15 20:43:01 all 0.16 0.00 0.03 0.00 0.00 99.81 20:43:01 0 0.02 0.00 0.02 0.00 0.00 99.97 20:43:01 1 0.05 0.00 0.02 0.00 0.00 99.93 20:43:01 2 0.07 0.00 0.05 0.00 0.00 99.88 20:43:01 3 0.53 0.00 0.03 0.00 0.00 99.43 20:44:01 all 0.17 0.00 0.03 0.00 0.00 99.80 20:44:01 0 0.10 0.00 0.05 0.00 0.00 99.85 20:44:01 1 0.05 0.00 0.03 0.00 0.00 99.92 20:44:01 2 0.03 0.00 0.02 0.00 0.00 99.95 20:44:01 3 0.48 0.00 0.03 0.00 0.00 99.48 20:45:01 all 0.13 0.00 0.03 0.00 0.00 99.85 20:45:01 0 0.05 0.00 0.00 0.00 0.00 99.95 20:45:01 1 0.07 0.00 0.05 0.00 0.00 99.88 20:45:01 2 0.02 0.00 0.02 0.00 0.00 99.97 20:45:01 3 0.38 0.00 0.02 0.00 0.00 99.60 20:46:01 all 0.16 0.00 0.07 0.00 0.00 99.76 20:46:01 0 0.03 0.00 0.02 0.00 0.00 99.95 20:46:01 1 0.07 0.00 0.05 0.00 0.00 99.88 20:46:01 2 0.03 0.00 0.18 0.00 0.00 99.78 20:46:01 3 0.48 0.00 0.05 0.00 0.00 99.47 20:47:01 all 0.15 0.00 0.03 0.00 0.00 99.83 20:47:01 0 0.02 0.00 0.02 0.00 0.00 99.97 20:47:01 1 0.03 0.00 0.05 0.00 0.00 99.92 20:47:01 2 0.03 0.00 0.02 0.00 0.00 99.95 20:47:01 3 0.52 0.00 0.02 0.00 0.00 99.47 20:48:01 all 0.15 0.00 0.02 0.00 0.00 99.82 20:48:01 0 0.00 0.00 0.02 0.00 0.00 99.98 20:48:01 1 0.07 0.00 0.03 0.00 0.00 99.90 20:48:01 2 0.37 0.00 0.03 0.00 0.00 99.60 20:48:01 3 0.18 0.00 0.02 0.00 0.00 99.80 20:49:01 all 0.15 0.00 0.02 0.00 0.00 99.83 20:49:01 0 0.02 0.00 0.02 0.00 0.00 99.97 20:49:01 1 0.03 0.00 0.03 0.00 0.00 99.93 20:49:01 2 0.53 0.00 0.03 0.00 0.00 99.43 20:49:01 3 0.02 0.00 0.02 0.00 0.00 99.97 20:50:01 all 0.15 0.00 0.02 0.00 0.00 99.83 20:50:01 0 0.02 0.00 0.02 0.00 0.00 99.97 20:50:01 1 0.05 0.00 0.03 0.00 0.02 99.90 20:50:01 2 0.53 0.00 0.02 0.00 0.00 99.45 20:50:01 3 0.02 0.00 0.03 0.00 0.00 99.95 20:51:01 all 9.92 0.00 6.41 3.25 0.05 80.36 20:51:01 0 9.39 0.00 6.65 3.03 0.03 80.90 20:51:01 1 10.42 0.00 6.20 4.10 0.05 79.23 20:51:01 2 9.53 0.00 6.35 2.89 0.07 81.17 20:51:01 3 10.34 0.00 6.46 2.98 0.05 80.16 20:52:01 all 11.21 0.00 8.43 3.71 0.05 76.61 20:52:01 0 10.27 0.00 8.23 3.39 0.03 78.08 20:52:01 1 10.50 0.00 8.57 4.63 0.03 76.26 20:52:01 2 10.07 0.00 8.68 3.62 0.05 77.58 20:52:01 3 14.00 0.00 8.22 3.17 0.05 74.55 Average: all 2.06 0.00 1.37 0.63 0.01 95.93 Average: 0 1.83 0.00 1.36 0.58 0.01 96.22 Average: 1 1.98 0.00 1.36 0.79 0.01 95.86 Average: 2 1.94 0.00 1.40 0.60 0.01 96.05 Average: 3 2.49 0.00 1.35 0.55 0.01 95.60