---> uname -a: Linux prd-centos7-docker-4c-2g-29813.vexxhost.local 3.10.0-1160.6.1.el7.x86_64 #1 SMP Tue Nov 17 13:59:11 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 Srbds: Not affected 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 43.1G 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 43.1G 14% /facter-os /dev/vda1 50.0G 6.9G 43.1G 14% /etc/resolv.conf /dev/vda1 50.0G 6.9G 43.1G 14% /etc/hostname /dev/vda1 50.0G 6.9G 43.1G 14% /etc/hosts /dev/vda1 50.0G 6.9G 43.1G 14% /var/log/auth.log /dev/vda1 50.0G 6.9G 43.1G 14% /w/workspace/undry_device-modbus-go_issue-218 /dev/vda1 50.0G 6.9G 43.1G 14% /run/cloud-init/result.json /dev/vda1 50.0G 6.9G 43.1G 14% /w/workspace/undry_device-modbus-go_issue-218@tmp /dev/vda1 50.0G 6.9G 43.1G 14% /var/log/sa-host /dev/vda1 50.0G 6.9G 43.1G 14% /var/log/secure ---> free -m: total used free shared buff/cache available Mem: 1837 704 118 0 1014 1027 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 inet6 ::1/128 scope host valid_lft forever preferred_lft forever 2: eth0: mtu 1458 qdisc pfifo_fast state UP qlen 1000 link/ether fa:16:3e:e1:50:04 brd ff:ff:ff:ff:ff:ff inet 10.30.122.31/23 brd 10.30.123.255 scope global dynamic eth0 valid_lft 85328sec preferred_lft 85328sec inet6 fe80::f816:3eff:fee1:5004/64 scope link valid_lft forever preferred_lft forever 3: docker0: mtu 1500 qdisc noqueue state DOWN link/ether 02:42:d4:70:19:47 brd ff:ff:ff:ff:ff:ff inet 10.250.0.254/24 brd 10.250.0.255 scope global docker0 valid_lft forever preferred_lft forever inet6 fe80::42:d4ff:fe70:1947/64 scope link valid_lft forever preferred_lft forever ---> sar -b -r -n DEV: Linux 3.10.0-1160.6.1.el7.x86_64 (centos-7-docker-5fbc1798-0377-b841-54c3-72bc41eda64a.vexxhost.lo) 03/15/21 _x86_64_ (4 CPU) 14:40:06 LINUX RESTART (4 CPU) 14:41:01 tps rtps wtps dtps bread/s bwrtn/s bdscd/s 14:42:01 23.66 6.13 17.53 0.00 1704.43 2838.49 0.00 14:43:01 0.92 0.00 0.92 0.00 0.00 17.57 0.00 14:44:01 0.38 0.00 0.38 0.00 0.00 5.76 0.00 14:45:01 0.28 0.00 0.28 0.00 0.00 4.45 0.00 14:46:01 0.22 0.00 0.22 0.00 0.00 3.35 0.00 14:47:02 0.42 0.00 0.42 0.00 0.00 6.78 0.00 14:48:01 0.34 0.00 0.34 0.00 0.00 4.45 0.00 14:49:01 0.25 0.00 0.25 0.00 0.00 3.71 0.00 14:50:01 0.22 0.00 0.22 0.00 0.00 3.38 0.00 14:51:01 0.20 0.00 0.20 0.00 0.00 2.16 0.00 14:52:01 0.28 0.00 0.28 0.00 0.00 3.46 0.00 14:53:01 0.22 0.00 0.22 0.00 0.00 2.56 0.00 14:54:01 0.30 0.00 0.30 0.00 0.00 3.08 0.00 14:55:01 0.28 0.00 0.28 0.00 0.00 2.75 0.00 14:56:01 0.97 0.17 0.80 0.00 5.33 16.07 0.00 14:57:01 0.23 0.00 0.23 0.00 0.00 3.26 0.00 Average: 1.82 0.39 1.43 0.00 106.99 182.80 0.00 14:41:01 kbmemfree kbavail kbmemused %memused kbbuffers kbcached kbcommit %commit kbactive kbinact kbdirty 14:42:01 175980 0 599704 31.87 2620 1103240 1109848 37.88 431508 1075532 12 14:43:01 180744 0 594932 31.62 2620 1103248 1071500 36.57 432096 1071164 20 14:44:01 180684 0 594988 31.62 2620 1103252 1071560 36.57 435912 1067560 8 14:45:01 179124 0 596548 31.71 2620 1103252 1071548 36.57 439676 1065508 8 14:46:01 179504 0 596160 31.68 2620 1103260 1071536 36.57 449868 1055340 20 14:47:02 180604 0 595056 31.63 2620 1103264 1071380 36.56 448792 1055340 12 14:48:01 180604 0 595052 31.63 2620 1103268 1071380 36.56 448924 1055340 8 14:49:01 180776 0 594876 31.62 2620 1103272 1071380 36.56 448928 1055340 8 14:50:01 180112 0 595532 31.65 2620 1103280 1071512 36.57 449776 1055344 8 14:51:01 176884 0 598756 31.82 2620 1103284 1071572 36.57 452908 1055340 8 14:52:01 177400 0 598240 31.80 2620 1103284 1071476 36.57 452252 1055340 8 14:53:01 178196 0 597436 31.75 2620 1103292 1071380 36.56 451764 1055340 8 14:54:01 178164 0 597464 31.75 2620 1103296 1071380 36.56 451644 1055340 8 14:55:01 176396 0 599224 31.85 2620 1103304 1072936 36.62 453372 1055340 8 14:56:01 176980 0 598636 31.82 2620 1103308 1071476 36.57 452904 1054724 8 14:57:01 177176 0 598432 31.81 2620 1103316 1071416 36.57 452588 1054724 8 Average: 178708 0 596940 31.73 2620 1103276 1073955 36.65 447057 1058914 10 14:41:01 IFACE rxpck/s txpck/s rxkB/s txkB/s rxcmp/s txcmp/s rxmcst/s %ifutil 14:42:01 eth0 71.30 59.07 339.65 28.38 0.00 0.00 0.00 0.00 14:42:01 lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 14:42:01 docker0 2.10 1.68 0.41 4.30 0.00 0.00 0.00 0.00 14:43:01 eth0 1.92 0.33 0.40 0.17 0.00 0.00 0.00 0.00 14:43:01 lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 14:43:01 docker0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 14:44:01 eth0 1.03 0.42 0.29 0.24 0.00 0.00 0.00 0.00 14:44:01 lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 14:44:01 docker0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 14:45:01 eth0 1.15 0.27 0.33 0.20 0.00 0.00 0.00 0.00 14:45:01 lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 14:45:01 docker0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 14:46:01 eth0 0.72 0.43 0.46 0.26 0.00 0.00 0.00 0.00 14:46:01 lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 14:46:01 docker0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 14:47:02 eth0 0.08 0.07 0.01 0.04 0.00 0.00 0.00 0.00 14:47:02 lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 14:47:02 docker0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 14:48:01 eth0 0.47 0.08 0.02 0.01 0.00 0.00 0.00 0.00 14:48:01 lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 14:48:01 docker0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 14:49:01 eth0 1.47 0.08 0.12 0.01 0.00 0.00 0.00 0.00 14:49:01 lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 14:49:01 docker0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 14:50:01 eth0 0.62 0.53 0.30 0.22 0.00 0.00 0.00 0.00 14:50:01 lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 14:50:01 docker0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 14:51:01 eth0 0.73 0.57 0.41 0.28 0.00 0.00 0.00 0.00 14:51:01 lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 14:51:01 docker0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 14:52:01 eth0 1.00 0.37 0.32 0.20 0.00 0.00 0.00 0.00 14:52:01 lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 14:52:01 docker0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 14:53:01 eth0 0.15 0.08 0.01 0.01 0.00 0.00 0.00 0.00 14:53:01 lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 14:53:01 docker0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 14:54:01 eth0 0.10 0.08 0.01 0.01 0.00 0.00 0.00 0.00 14:54:01 lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 14:54:01 docker0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 14:55:01 eth0 0.13 0.08 0.01 0.01 0.00 0.00 0.00 0.00 14:55:01 lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 14:55:01 docker0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 14:56:01 eth0 0.23 0.17 0.08 0.07 0.00 0.00 0.00 0.00 14:56:01 lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 14:56:01 docker0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 14:57:01 eth0 0.68 0.13 0.12 0.01 0.00 0.00 0.00 0.00 14:57:01 lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 14:57:01 docker0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Average: eth0 5.12 3.93 21.44 1.88 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 0.13 0.11 0.03 0.27 0.00 0.00 0.00 0.00 ---> sar -P ALL: Linux 3.10.0-1160.6.1.el7.x86_64 (centos-7-docker-5fbc1798-0377-b841-54c3-72bc41eda64a.vexxhost.lo) 03/15/21 _x86_64_ (4 CPU) 14:40:06 LINUX RESTART (4 CPU) 14:41:01 CPU %user %nice %system %iowait %steal %idle 14:42:01 all 2.39 0.00 1.68 0.41 0.05 95.47 14:42:01 0 2.23 0.00 2.03 0.07 0.05 95.62 14:42:01 1 2.14 0.00 1.34 1.04 0.08 95.39 14:42:01 2 2.93 0.00 1.76 0.42 0.05 94.84 14:42:01 3 2.25 0.00 1.58 0.12 0.03 96.03 14:43:01 all 0.16 0.00 0.05 0.00 0.00 99.79 14:43:01 0 0.02 0.00 0.03 0.00 0.02 99.93 14:43:01 1 0.05 0.00 0.07 0.00 0.00 99.88 14:43:01 2 0.55 0.00 0.07 0.00 0.00 99.38 14:43:01 3 0.02 0.00 0.03 0.00 0.00 99.95 14:44:01 all 0.20 0.00 0.20 0.00 0.01 99.59 14:44:01 0 0.08 0.00 0.22 0.00 0.00 99.70 14:44:01 1 0.08 0.00 0.15 0.00 0.03 99.73 14:44:01 2 0.57 0.00 0.23 0.00 0.00 99.20 14:44:01 3 0.07 0.00 0.18 0.00 0.02 99.73 14:45:01 all 0.13 0.00 0.04 0.00 0.00 99.83 14:45:01 0 0.03 0.00 0.02 0.00 0.00 99.95 14:45:01 1 0.02 0.00 0.05 0.00 0.00 99.93 14:45:01 2 0.47 0.00 0.05 0.00 0.02 99.47 14:45:01 3 0.02 0.00 0.03 0.00 0.00 99.95 14:46:01 all 0.12 0.00 0.08 0.00 0.01 99.79 14:46:01 0 0.05 0.00 0.02 0.00 0.00 99.93 14:46:01 1 0.07 0.00 0.18 0.00 0.02 99.73 14:46:01 2 0.32 0.00 0.07 0.00 0.00 99.62 14:46:01 3 0.05 0.00 0.05 0.00 0.02 99.88 14:47:02 all 0.03 0.00 0.04 0.00 0.00 99.92 14:47:02 0 0.02 0.00 0.02 0.00 0.00 99.97 14:47:02 1 0.00 0.00 0.02 0.00 0.00 99.98 14:47:02 2 0.07 0.00 0.07 0.00 0.00 99.87 14:47:02 3 0.05 0.00 0.05 0.00 0.02 99.88 14:48:01 all 0.15 0.00 0.04 0.00 0.00 99.81 14:48:01 0 0.00 0.00 0.02 0.00 0.00 99.98 14:48:01 1 0.07 0.00 0.07 0.00 0.00 99.86 14:48:01 2 0.02 0.00 0.03 0.00 0.00 99.95 14:48:01 3 0.53 0.00 0.03 0.00 0.00 99.44 14:49:01 all 0.16 0.00 0.03 0.00 0.00 99.81 14:49:01 0 0.02 0.00 0.02 0.00 0.00 99.97 14:49:01 1 0.03 0.00 0.02 0.00 0.00 99.95 14:49:01 2 0.05 0.00 0.05 0.00 0.00 99.90 14:49:01 3 0.53 0.00 0.05 0.00 0.00 99.42 14:50:01 all 0.18 0.00 0.03 0.00 0.00 99.80 14:50:01 0 0.02 0.00 0.02 0.00 0.00 99.97 14:50:01 1 0.03 0.00 0.03 0.00 0.00 99.93 14:50:01 2 0.12 0.00 0.03 0.00 0.00 99.85 14:50:01 3 0.53 0.00 0.02 0.00 0.02 99.43 14:51:01 all 0.15 0.00 0.04 0.00 0.01 99.80 14:51:01 0 0.02 0.00 0.05 0.00 0.02 99.92 14:51:01 1 0.02 0.00 0.02 0.00 0.00 99.97 14:51:01 2 0.05 0.00 0.03 0.00 0.02 99.90 14:51:01 3 0.52 0.00 0.05 0.00 0.00 99.43 14:52:01 all 0.16 0.00 0.03 0.00 0.00 99.81 14:52:01 0 0.02 0.00 0.02 0.00 0.00 99.97 14:52:01 1 0.25 0.00 0.03 0.00 0.00 99.72 14:52:01 2 0.33 0.00 0.02 0.00 0.02 99.63 14:52:01 3 0.03 0.00 0.05 0.00 0.00 99.92 14:52:01 CPU %user %nice %system %iowait %steal %idle 14:53:01 all 0.15 0.00 0.03 0.00 0.00 99.82 14:53:01 0 0.05 0.00 0.05 0.00 0.00 99.90 14:53:01 1 0.50 0.00 0.02 0.00 0.00 99.48 14:53:01 2 0.02 0.00 0.03 0.00 0.00 99.95 14:53:01 3 0.03 0.00 0.02 0.00 0.00 99.95 14:54:01 all 0.10 0.00 0.03 0.00 0.01 99.86 14:54:01 0 0.02 0.00 0.02 0.00 0.00 99.97 14:54:01 1 0.32 0.00 0.05 0.00 0.02 99.62 14:54:01 2 0.03 0.00 0.02 0.00 0.02 99.93 14:54:01 3 0.03 0.00 0.03 0.00 0.00 99.93 14:55:01 all 0.04 0.00 0.05 0.00 0.00 99.91 14:55:01 0 0.02 0.00 0.03 0.00 0.00 99.95 14:55:01 1 0.03 0.00 0.08 0.00 0.00 99.88 14:55:01 2 0.07 0.00 0.07 0.00 0.00 99.87 14:55:01 3 0.03 0.00 0.03 0.00 0.00 99.93 14:56:01 all 0.15 0.00 0.04 0.00 0.01 99.80 14:56:01 0 0.02 0.00 0.02 0.00 0.02 99.95 14:56:01 1 0.52 0.00 0.05 0.00 0.00 99.43 14:56:01 2 0.05 0.00 0.07 0.00 0.02 99.87 14:56:01 3 0.02 0.00 0.03 0.00 0.00 99.95 14:57:01 all 0.15 0.00 0.03 0.00 0.00 99.82 14:57:01 0 0.03 0.00 0.03 0.00 0.00 99.93 14:57:01 1 0.52 0.00 0.03 0.00 0.00 99.45 14:57:01 2 0.03 0.00 0.03 0.00 0.00 99.93 14:57:01 3 0.02 0.00 0.02 0.00 0.02 99.95 Average: all 0.28 0.00 0.15 0.03 0.01 99.54 Average: 0 0.16 0.00 0.16 0.00 0.01 99.66 Average: 1 0.29 0.00 0.14 0.06 0.01 99.50 Average: 2 0.35 0.00 0.16 0.03 0.01 99.45 Average: 3 0.29 0.00 0.14 0.01 0.01 99.55