---> uname -a: Linux ee3a28bca387 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 7.2G 42.8G 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 7.2G 42.8G 14% /etc/resolv.conf /dev/vda1 50.0G 7.2G 42.8G 14% /etc/hostname /dev/vda1 50.0G 7.2G 42.8G 14% /etc/hosts /dev/vda1 50.0G 7.2G 42.8G 14% /w/workspace/xfoundry_device-modbus-go_master@tmp /dev/vda1 50.0G 7.2G 42.8G 14% /var/log/sa /dev/vda1 50.0G 7.2G 42.8G 14% /w/workspace/xfoundry_device-modbus-go_master ---> free -m: total used free shared buff/cache available Mem: 1837 647 120 0 1069 1084 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) 06/21/20 _x86_64_ (4 CPU) 16:39:04 LINUX RESTART 16:40:01 tps rtps wtps bread/s bwrtn/s 16:41:01 5.85 1.10 4.75 25.58 142.01 16:42:01 0.35 0.00 0.35 0.00 5.83 16:43:01 0.25 0.00 0.25 0.00 3.56 16:44:01 0.25 0.00 0.25 0.00 3.61 16:45:01 0.23 0.00 0.23 0.00 3.16 16:46:01 0.28 0.02 0.27 0.13 3.25 16:47:01 0.28 0.00 0.28 0.00 3.35 16:48:01 0.22 0.00 0.22 0.00 2.30 Average: 0.96 0.14 0.82 3.21 20.89 16:40:01 kbmemfree kbmemused %memused kbbuffers kbcached kbcommit %commit kbactive kbinact kbdirty 16:41:01 168464 1713092 91.05 2620 1147928 1103908 37.67 440764 1112720 20 16:42:01 169024 1712532 91.02 2620 1147932 1080400 36.87 441188 1112172 20 16:43:01 167768 1713788 91.08 2620 1147940 1080672 36.88 442544 1112172 20 16:44:01 167928 1713628 91.08 2620 1147940 1080384 36.87 448464 1106116 16 16:45:01 167872 1713684 91.08 2620 1147948 1080456 36.87 449728 1105124 16 16:46:01 167880 1713676 91.08 2620 1147956 1080432 36.87 449756 1105120 12 16:47:01 168084 1713472 91.07 2620 1147960 1080384 36.87 439972 1114648 8 16:48:01 167780 1713776 91.08 2620 1147968 1080384 36.87 439980 1114648 8 Average: 168100 1713456 91.07 2620 1147947 1083378 36.97 444050 1110340 15 16:40:01 IFACE rxpck/s txpck/s rxkB/s txkB/s rxcmp/s txcmp/s rxmcst/s 16:41:01 eth0 6.71 4.43 5.58 5.30 0.00 0.00 0.00 16:41:01 lo 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 16:42:01 eth0 3.58 1.58 2.94 0.10 0.00 0.00 0.00 16:42:01 lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 16:42:01 docker0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 16:43:01 eth0 1.25 0.77 0.57 0.41 0.00 0.00 0.00 16:43:01 lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 16:43:01 docker0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 16:44:01 eth0 0.08 0.07 0.01 0.01 0.00 0.00 0.00 16:44:01 lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 16:44:01 docker0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 16:45:01 eth0 0.15 0.10 0.08 0.06 0.00 0.00 0.00 16:45:01 lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 16:45:01 docker0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 16:46:01 eth0 0.20 0.17 0.07 0.01 0.00 0.00 0.00 16:46:01 lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 16:46:01 docker0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 16:47:01 eth0 0.08 0.08 0.01 0.01 0.00 0.00 0.00 16:47:01 lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 16:47:01 docker0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 16:48:01 eth0 0.07 0.08 0.01 0.01 0.00 0.00 0.00 16:48:01 lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 16:48:01 docker0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Average: eth0 1.52 0.91 1.16 0.74 0.00 0.00 0.00 Average: lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Average: docker0 0.00 0.00 0.00 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) 06/21/20 _x86_64_ (4 CPU) 16:39:04 LINUX RESTART 16:40:01 CPU %user %nice %system %iowait %steal %idle 16:41:01 all 0.49 0.00 0.10 0.02 0.00 99.38 16:41:01 0 0.33 0.00 0.15 0.03 0.00 99.48 16:41:01 1 0.27 0.00 0.15 0.03 0.00 99.55 16:41:01 2 0.48 0.00 0.07 0.00 0.00 99.45 16:41:01 3 0.87 0.00 0.07 0.02 0.00 99.05 16:42:01 all 0.17 0.00 0.04 0.00 0.00 99.79 16:42:01 0 0.07 0.00 0.03 0.00 0.00 99.90 16:42:01 1 0.03 0.00 0.03 0.00 0.00 99.93 16:42:01 2 0.03 0.00 0.03 0.00 0.00 99.93 16:42:01 3 0.57 0.00 0.03 0.00 0.02 99.38 16:43:01 all 0.17 0.00 0.05 0.00 0.00 99.78 16:43:01 0 0.03 0.00 0.02 0.00 0.00 99.95 16:43:01 1 0.20 0.00 0.08 0.00 0.00 99.72 16:43:01 2 0.08 0.00 0.02 0.00 0.00 99.90 16:43:01 3 0.37 0.00 0.05 0.00 0.00 99.58 16:44:01 all 0.08 0.00 0.03 0.00 0.00 99.89 16:44:01 0 0.02 0.00 0.02 0.00 0.00 99.97 16:44:01 1 0.28 0.00 0.05 0.00 0.00 99.67 16:44:01 2 0.02 0.00 0.02 0.00 0.00 99.97 16:44:01 3 0.03 0.00 0.02 0.00 0.00 99.95 16:45:01 all 0.16 0.00 0.03 0.00 0.00 99.81 16:45:01 0 0.00 0.00 0.03 0.00 0.00 99.97 16:45:01 1 0.52 0.00 0.03 0.00 0.00 99.45 16:45:01 2 0.07 0.00 0.07 0.00 0.00 99.87 16:45:01 3 0.03 0.00 0.03 0.00 0.00 99.93 16:46:01 all 0.08 0.00 0.03 0.00 0.00 99.89 16:46:01 0 0.00 0.00 0.00 0.00 0.00 100.00 16:46:01 1 0.15 0.00 0.02 0.00 0.00 99.83 16:46:01 2 0.17 0.00 0.08 0.00 0.00 99.75 16:46:01 3 0.02 0.00 0.03 0.00 0.00 99.95 16:47:01 all 0.03 0.00 0.03 0.00 0.00 99.94 16:47:01 0 0.03 0.00 0.03 0.00 0.00 99.93 16:47:01 1 0.03 0.00 0.03 0.00 0.00 99.93 16:47:01 2 0.03 0.00 0.02 0.00 0.00 99.95 16:47:01 3 0.02 0.00 0.02 0.00 0.00 99.97 16:48:01 all 0.03 0.00 0.03 0.00 0.00 99.95 16:48:01 0 0.05 0.00 0.05 0.00 0.00 99.90 16:48:01 1 0.03 0.00 0.02 0.00 0.00 99.95 16:48:01 2 0.02 0.00 0.02 0.00 0.02 99.95 16:48:01 3 0.00 0.00 0.02 0.00 0.00 99.98 Average: all 0.15 0.00 0.04 0.00 0.00 99.80 Average: 0 0.07 0.00 0.04 0.00 0.00 99.89 Average: 1 0.19 0.00 0.05 0.00 0.00 99.75 Average: 2 0.11 0.00 0.04 0.00 0.00 99.85 Average: 3 0.24 0.00 0.03 0.00 0.00 99.73