---> uname -a: Linux 28e418d67654 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% /w/workspace/xfoundry_device-modbus-go_master /dev/vda1 50.0G 8.5G 41.5G 17% /w/workspace/xfoundry_device-modbus-go_master@tmp /dev/vda1 50.0G 8.5G 41.5G 17% /var/log/sa ---> free -m: total used free shared buff/cache available Mem: 1837 777 110 0 949 990 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) 08/31/20 _x86_64_ (4 CPU) 20:56:01 LINUX RESTART 20:57:01 tps rtps wtps bread/s bwrtn/s 20:58:01 47.82 11.43 36.39 4682.73 2252.66 20:59:01 0.67 0.00 0.67 0.00 17.58 21:00:01 0.20 0.00 0.20 0.00 2.03 21:01:01 0.32 0.02 0.30 0.13 3.80 21:02:01 0.52 0.12 0.40 2.13 7.75 21:03:01 0.25 0.00 0.25 0.00 2.85 21:04:01 256.51 144.54 111.96 6272.75 32012.33 21:05:02 223.02 82.41 140.61 4348.40 32832.25 Average: 66.19 29.83 36.37 1913.93 8396.03 20:57:01 kbmemfree kbmemused %memused kbbuffers kbcached kbcommit %commit kbactive kbinact kbdirty 20:58:01 179020 1702536 90.49 2620 1145704 1134908 38.73 400604 1142524 120 20:59:01 189392 1692164 89.93 2620 1145708 1070728 36.54 397748 1136736 8 21:00:01 188160 1693396 90.00 2620 1145716 1070924 36.55 398520 1136736 8 21:01:01 185468 1696088 90.14 2620 1145716 1073504 36.64 408224 1129676 12 21:02:01 185260 1696296 90.15 2620 1145860 1071624 36.57 410448 1127504 8 21:03:01 185272 1696284 90.15 2620 1145864 1071528 36.57 427704 1110476 8 21:04:01 70216 1811340 96.27 2620 1060416 2002244 68.33 649336 959084 20 21:05:02 231388 1650168 87.70 1792 909168 1335640 45.58 598800 760976 52 Average: 176772 1704784 90.61 2517 1105519 1228888 41.94 461423 1062964 30 20:57:01 IFACE rxpck/s txpck/s rxkB/s txkB/s rxcmp/s txcmp/s rxmcst/s 20:58:01 eth0 74.88 58.79 461.01 44.00 0.00 0.00 0.00 20:58:01 lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 20:58:01 docker0 2.26 1.91 0.35 3.59 0.00 0.00 0.00 20:59:01 eth0 0.80 0.08 0.07 0.01 0.00 0.00 0.00 20:59:01 lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 20:59:01 docker0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 21:00:01 eth0 1.71 0.28 0.37 0.20 0.00 0.00 0.00 21:00:01 lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 21:00:01 docker0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 21:01:01 eth0 0.68 0.42 0.29 0.21 0.00 0.00 0.00 21:01:01 lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 21:01:01 docker0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 21:02:01 eth0 1.21 0.45 0.46 0.27 0.00 0.00 0.00 21:02:01 lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 21:02:01 docker0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 21:03:01 eth0 0.43 0.23 0.26 0.16 0.00 0.00 0.00 21:03:01 lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 21:03:01 docker0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 21:04:01 veth815e0ee 0.00 0.00 0.00 0.00 0.00 0.00 0.00 21:04:01 eth0 449.33 318.20 5092.62 163.86 0.00 0.00 0.00 21:04:01 veth3b7ad8c 0.00 0.00 0.00 0.00 0.00 0.00 0.00 21:04:01 lo 0.12 0.12 0.01 0.01 0.00 0.00 0.00 21:05:02 veth1c9263a 0.00 0.10 0.00 0.01 0.00 0.00 0.00 21:05:02 eth0 236.69 137.87 3434.68 76.39 0.00 0.00 0.00 21:05:02 lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 21:05:02 docker0 57.13 70.96 4.78 254.69 0.00 0.00 0.00 Average: veth1c9263a 0.00 0.01 0.00 0.00 0.00 0.00 0.00 Average: eth0 85.79 57.03 1066.41 30.04 0.00 0.00 0.00 Average: lo 0.01 0.01 0.00 0.00 0.00 0.00 0.00 Average: docker0 7.15 8.88 0.60 31.87 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) 08/31/20 _x86_64_ (4 CPU) 20:56:01 LINUX RESTART 20:57:01 CPU %user %nice %system %iowait %steal %idle 20:58:01 all 3.30 0.00 2.25 1.67 5.75 87.02 20:58:01 0 2.88 0.00 2.68 0.79 6.20 87.46 20:58:01 1 3.77 0.00 2.03 1.99 6.07 86.13 20:58:01 2 3.08 0.00 2.21 1.05 5.62 88.04 20:58:01 3 3.48 0.00 2.11 2.83 5.14 86.44 20:59:01 all 0.12 0.00 0.12 0.00 0.40 99.36 20:59:01 0 0.08 0.00 0.17 0.00 0.47 99.29 20:59:01 1 0.03 0.00 0.08 0.00 0.33 99.55 20:59:01 2 0.07 0.00 0.10 0.00 0.40 99.44 20:59:01 3 0.30 0.00 0.12 0.00 0.38 99.20 21:00:01 all 0.12 0.00 0.03 0.00 0.27 99.58 21:00:01 0 0.03 0.00 0.07 0.00 0.25 99.65 21:00:01 1 0.05 0.00 0.03 0.00 0.17 99.75 21:00:01 2 0.33 0.00 0.02 0.00 0.47 99.19 21:00:01 3 0.03 0.00 0.03 0.00 0.20 99.73 21:01:01 all 0.14 0.00 0.05 0.00 0.20 99.60 21:01:01 0 0.03 0.00 0.08 0.00 0.20 99.68 21:01:01 1 0.12 0.00 0.05 0.00 0.35 99.48 21:01:01 2 0.40 0.00 0.05 0.00 0.15 99.40 21:01:01 3 0.02 0.00 0.02 0.00 0.08 99.88 21:02:01 all 0.12 0.00 0.06 0.00 0.22 99.60 21:02:01 0 0.05 0.00 0.15 0.00 0.18 99.62 21:02:01 1 0.02 0.00 0.03 0.02 0.22 99.72 21:02:01 2 0.07 0.00 0.03 0.00 0.23 99.67 21:02:01 3 0.35 0.00 0.05 0.00 0.25 99.35 21:03:01 all 0.09 0.00 0.08 0.00 0.14 99.69 21:03:01 0 0.05 0.00 0.17 0.00 0.15 99.63 21:03:01 1 0.02 0.00 0.02 0.00 0.07 99.90 21:03:01 2 0.05 0.00 0.08 0.00 0.25 99.62 21:03:01 3 0.25 0.00 0.05 0.00 0.08 99.62 21:04:01 all 8.13 0.00 6.01 2.03 8.44 75.39 21:04:01 0 8.11 0.00 6.46 2.06 8.84 74.52 21:04:01 1 7.72 0.00 6.00 2.15 8.40 75.73 21:04:01 2 9.02 0.00 5.71 1.88 7.85 75.54 21:04:01 3 7.66 0.00 5.86 2.02 8.67 75.79 21:05:02 all 8.91 0.00 6.93 2.36 12.46 69.34 21:05:02 0 7.71 0.00 7.19 1.48 12.85 70.77 21:05:02 1 7.17 0.00 6.30 2.35 12.69 71.49 21:05:02 2 12.24 0.00 6.97 3.50 11.53 65.76 21:05:02 3 8.58 0.00 7.26 2.16 12.75 69.25 Average: all 2.59 0.00 1.92 0.75 3.46 91.27 Average: 0 2.34 0.00 2.10 0.53 3.61 91.42 Average: 1 2.35 0.00 1.81 0.81 3.53 91.50 Average: 2 3.11 0.00 1.87 0.79 3.27 90.95 Average: 3 2.56 0.00 1.92 0.87 3.42 91.22