---> uname -a: Linux 47bc316aa2e3 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 8.2G 41.8G 16% / 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 8.2G 41.8G 16% /etc/resolv.conf /dev/vda1 50.0G 8.2G 41.8G 16% /etc/hostname /dev/vda1 50.0G 8.2G 41.8G 16% /etc/hosts /dev/vda1 50.0G 8.2G 41.8G 16% /w/workspace/xfoundry_device-modbus-go_master@tmp /dev/vda1 50.0G 8.2G 41.8G 16% /var/log/sa-host /dev/vda1 50.0G 8.2G 41.8G 16% /w/workspace/xfoundry_device-modbus-go_master ---> free -m: total used free shared buff/cache available Mem: 1837 800 123 0 913 971 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) 09/10/20 _x86_64_ (4 CPU) 00:03:43 LINUX RESTART (4 CPU) 00:05:01 tps rtps wtps dtps bread/s bwrtn/s bdscd/s 00:06:01 3.51 0.00 3.51 0.00 0.00 114.47 0.00 00:07:01 0.42 0.00 0.42 0.00 0.00 5.61 0.00 00:08:01 0.25 0.00 0.25 0.00 0.00 2.85 0.00 00:09:01 0.27 0.00 0.27 0.00 0.00 3.61 0.00 00:10:01 238.39 136.02 102.36 0.00 7300.28 32091.64 0.00 00:11:01 240.11 111.33 128.77 0.00 8270.26 32663.92 0.00 Average: 80.75 41.36 39.39 0.00 2603.35 10847.98 0.00 00:05:01 kbmemfree kbavail kbmemused %memused kbbuffers kbcached kbcommit %commit kbactive kbinact kbdirty 00:06:01 166648 0 562896 29.92 2620 1149392 1072652 36.61 422632 1132920 16 00:07:01 166744 0 562796 29.91 2620 1149396 1072652 36.61 422900 1132628 8 00:08:01 165068 0 564464 30.00 2620 1149404 1072904 36.62 424440 1132628 16 00:09:01 164056 0 565476 30.05 2620 1149404 1072928 36.62 427540 1130856 8 00:10:01 136932 0 688452 36.59 2596 1053576 1416800 48.35 568120 981388 64 00:11:01 123560 0 747572 39.73 1492 1008932 1109504 37.87 614180 853120 168 Average: 153835 0 615276 32.70 2428 1110017 1136240 38.78 479969 1060590 47 00:05:01 IFACE rxpck/s txpck/s rxkB/s txkB/s rxcmp/s txcmp/s rxmcst/s %ifutil 00:06:01 eth0 0.08 0.08 0.01 0.01 0.00 0.00 0.00 0.00 00:06:01 lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 00:06:01 docker0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 00:07:01 eth0 0.59 0.08 0.04 0.01 0.00 0.00 0.00 0.00 00:07:01 lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 00:07:01 docker0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 00:08:01 eth0 2.18 0.70 0.69 0.37 0.00 0.00 0.00 0.00 00:08:01 lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 00:08:01 docker0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 00:09:01 eth0 2.56 0.90 0.93 0.63 0.00 0.00 0.00 0.00 00:09:01 lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 00:09:01 docker0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 00:10:01 eth0 543.67 459.56 4062.07 106.38 0.00 0.00 0.00 0.00 00:10:01 lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 00:10:01 vethf524fae 0.00 0.10 0.00 0.01 0.00 0.00 0.00 0.00 00:10:01 docker0 24.06 22.31 2.76 50.99 0.00 0.00 0.00 0.00 00:11:01 eth0 468.90 390.80 3452.44 91.20 0.00 0.00 0.00 0.00 00:11:01 lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 00:11:01 docker0 24.76 29.64 1.46 198.68 0.00 0.00 0.00 0.00 Average: eth0 170.20 142.47 1256.65 33.21 0.00 0.00 0.00 0.00 Average: lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Average: docker0 8.16 8.69 0.71 41.75 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) 09/10/20 _x86_64_ (4 CPU) 00:03:43 LINUX RESTART (4 CPU) 00:05:01 CPU %user %nice %system %iowait %steal %idle 00:06:01 all 0.08 0.00 0.05 0.00 0.01 99.85 00:06:01 0 0.03 0.00 0.05 0.00 0.02 99.90 00:06:01 1 0.10 0.00 0.03 0.00 0.02 99.85 00:06:01 2 0.10 0.00 0.08 0.00 0.00 99.82 00:06:01 3 0.10 0.00 0.05 0.00 0.00 99.85 00:07:01 all 0.17 0.00 0.04 0.00 0.00 99.79 00:07:01 0 0.03 0.00 0.03 0.00 0.00 99.93 00:07:01 1 0.05 0.00 0.05 0.00 0.00 99.90 00:07:01 2 0.53 0.00 0.02 0.00 0.02 99.44 00:07:01 3 0.07 0.00 0.05 0.00 0.00 99.88 00:08:01 all 0.17 0.00 0.03 0.00 0.00 99.80 00:08:01 0 0.05 0.00 0.02 0.00 0.00 99.93 00:08:01 1 0.08 0.00 0.03 0.00 0.00 99.88 00:08:01 2 0.52 0.00 0.03 0.00 0.00 99.45 00:08:01 3 0.02 0.00 0.03 0.00 0.00 99.95 00:09:01 all 0.16 0.00 0.05 0.00 0.00 99.78 00:09:01 0 0.03 0.00 0.05 0.00 0.00 99.92 00:09:01 1 0.03 0.00 0.03 0.00 0.00 99.93 00:09:01 2 0.50 0.00 0.03 0.00 0.00 99.47 00:09:01 3 0.08 0.00 0.10 0.00 0.02 99.80 00:10:01 all 10.14 0.00 7.15 2.24 0.06 80.41 00:10:01 0 10.22 0.00 7.68 2.85 0.05 79.21 00:10:01 1 10.49 0.00 6.77 2.75 0.07 79.92 00:10:01 2 9.58 0.00 7.34 1.58 0.07 81.43 00:10:01 3 10.29 0.00 6.81 1.78 0.05 81.08 00:11:01 all 11.12 0.00 7.77 3.63 0.06 77.42 00:11:01 0 13.97 0.00 8.80 2.79 0.05 74.40 00:11:01 1 9.93 0.00 7.71 5.29 0.05 77.03 00:11:01 2 9.69 0.00 7.03 1.93 0.05 81.29 00:11:01 3 10.90 0.00 7.55 4.52 0.07 76.96 Average: all 3.61 0.00 2.49 0.97 0.02 92.91 Average: 0 4.01 0.00 2.74 0.93 0.02 92.31 Average: 1 3.42 0.00 2.42 1.33 0.02 92.82 Average: 2 3.46 0.00 2.40 0.58 0.02 93.53 Average: 3 3.54 0.00 2.41 1.04 0.02 92.99