---> uname -a: Linux 7a3a3e15bacc 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 6.9G 43.0G 14% / 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 6.9G 43.0G 14% /etc/resolv.conf /dev/vda1 50.0G 6.9G 43.0G 14% /etc/hostname /dev/vda1 50.0G 6.9G 43.0G 14% /etc/hosts /dev/vda1 50.0G 6.9G 43.0G 14% /w/workspace/xfoundry_device-modbus-go_PR-171 /dev/vda1 50.0G 6.9G 43.0G 14% /w/workspace/xfoundry_device-modbus-go_PR-171@tmp /dev/vda1 50.0G 6.9G 43.0G 14% /var/log/sa-host ---> free -m: total used free shared buff/cache available Mem: 1837 667 122 0 1048 1062 Swap: 1023 1 1022 ---> 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 6: eth0@if7: 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) 09/03/20 _x86_64_ (4 CPU) 16:35:42 LINUX RESTART (4 CPU) 16:37:01 tps rtps wtps dtps bread/s bwrtn/s bdscd/s 16:38:01 9.68 4.20 5.48 0.00 672.71 142.89 0.00 16:39:01 0.33 0.00 0.33 0.00 0.00 5.28 0.00 16:40:01 0.27 0.00 0.27 0.00 0.00 3.43 0.00 16:41:01 0.27 0.00 0.27 0.00 0.00 3.46 0.00 Average: 2.61 1.04 1.57 0.00 166.08 38.33 0.00 16:37:01 kbmemfree kbavail kbmemused %memused kbbuffers kbcached kbcommit %commit kbactive kbinact kbdirty 16:38:01 168388 0 594496 31.60 2620 1116052 1142148 38.98 436240 1117332 20 16:39:01 177240 0 585640 31.13 2620 1116056 1079008 36.82 435232 1110908 20 16:40:01 176660 0 586160 31.15 2620 1116116 1079100 36.83 435828 1110920 28 16:41:01 177556 0 585316 31.11 2620 1116064 1078792 36.82 438732 1107272 16 Average: 174961 0 587903 31.25 2620 1116072 1094762 37.36 436508 1111608 21 16:37:01 IFACE rxpck/s txpck/s rxkB/s txkB/s rxcmp/s txcmp/s rxmcst/s %ifutil 16:38:01 eth0 24.04 21.56 25.77 31.24 0.00 0.00 0.00 0.00 16:38:01 lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 16:38:01 docker0 2.15 1.88 0.36 3.80 0.00 0.00 0.00 0.00 16:39:01 eth0 1.57 0.35 0.37 0.20 0.00 0.00 0.00 0.00 16:39:01 lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 16:39:01 docker0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 16:40:01 eth0 1.26 0.58 0.58 0.39 0.00 0.00 0.00 0.00 16:40:01 lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 16:40:01 docker0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 16:41:01 eth0 0.17 0.08 0.01 0.01 0.00 0.00 0.00 0.00 16:41:01 lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 16:41:01 docker0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Average: eth0 6.69 5.58 6.60 7.86 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 0.53 0.46 0.09 0.94 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) 09/03/20 _x86_64_ (4 CPU) 16:35:42 LINUX RESTART (4 CPU) 16:37:01 CPU %user %nice %system %iowait %steal %idle 16:38:01 all 1.20 0.00 0.78 0.08 1.34 96.60 16:38:01 0 1.09 0.00 0.64 0.03 1.20 97.03 16:38:01 1 1.19 0.00 0.95 0.05 1.34 96.47 16:38:01 2 1.25 0.00 0.78 0.12 1.53 96.32 16:38:01 3 1.27 0.00 0.73 0.12 1.29 96.59 16:39:01 all 0.12 0.00 0.06 0.00 0.27 99.54 16:39:01 0 0.03 0.00 0.05 0.00 0.47 99.45 16:39:01 1 0.40 0.00 0.03 0.00 0.17 99.40 16:39:01 2 0.05 0.00 0.08 0.00 0.33 99.53 16:39:01 3 0.02 0.00 0.08 0.00 0.12 99.78 16:40:01 all 0.08 0.00 0.04 0.00 0.25 99.63 16:40:01 0 0.02 0.00 0.03 0.00 0.18 99.77 16:40:01 1 0.17 0.00 0.03 0.00 0.17 99.63 16:40:01 2 0.10 0.00 0.07 0.00 0.37 99.47 16:40:01 3 0.03 0.00 0.03 0.00 0.27 99.67 16:41:01 all 0.10 0.00 0.04 0.00 0.42 99.44 16:41:01 0 0.03 0.00 0.02 0.00 0.33 99.62 16:41:01 1 0.28 0.00 0.03 0.00 0.45 99.24 16:41:01 2 0.03 0.00 0.08 0.00 0.65 99.24 16:41:01 3 0.03 0.00 0.02 0.00 0.27 99.68 Average: all 0.37 0.00 0.23 0.02 0.57 98.82 Average: 0 0.29 0.00 0.18 0.01 0.54 98.98 Average: 1 0.51 0.00 0.26 0.01 0.53 98.70 Average: 2 0.35 0.00 0.25 0.03 0.71 98.65 Average: 3 0.33 0.00 0.21 0.03 0.48 98.94