---> uname -a: Linux bfd9d42e7e3b 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/gexfoundry_device-mqtt-go_PR-165@tmp /dev/vda1 50.0G 7.2G 42.8G 14% /var/log/sa /dev/vda1 50.0G 7.2G 42.8G 14% /w/workspace/gexfoundry_device-mqtt-go_PR-165 ---> free -m: total used free shared buff/cache available Mem: 1837 634 126 0 1076 1096 Swap: 1023 0 1023 ---> 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) 08/31/20 _x86_64_ (4 CPU) 18:47:23 LINUX RESTART 18:48:01 tps rtps wtps bread/s bwrtn/s 18:49:01 47.86 14.17 33.69 4672.15 2523.76 18:50:01 1.50 0.00 1.50 0.00 26.53 18:51:01 0.18 0.00 0.18 0.00 2.03 18:52:01 0.32 0.00 0.32 0.00 3.56 18:53:02 0.27 0.00 0.27 0.00 3.98 18:54:01 0.36 0.00 0.36 0.00 4.96 18:55:01 0.47 0.02 0.45 0.13 4.18 18:56:01 102.73 72.48 30.25 5396.87 15018.83 Average: 19.25 10.86 8.40 1261.68 2203.66 18:48:01 kbmemfree kbmemused %memused kbbuffers kbcached kbcommit %commit kbactive kbinact kbdirty 18:49:01 166960 1714596 91.13 2620 1156052 1134940 38.73 413900 1140848 12 18:50:01 173360 1708196 90.79 2620 1156056 1086980 37.10 411760 1137532 8 18:51:01 172740 1708816 90.82 2620 1156060 1087148 37.10 414668 1135544 8 18:52:01 172028 1709528 90.86 2620 1156064 1086980 37.10 415528 1134856 8 18:53:02 171908 1709648 90.86 2620 1156068 1087052 37.10 419036 1131840 12 18:54:01 171212 1710344 90.90 2620 1156076 1087148 37.10 419572 1131840 8 18:55:01 172360 1709196 90.84 2620 1156080 1086980 37.10 418564 1131840 8 18:56:01 77516 1804040 95.88 2620 1146480 1511996 51.60 519032 1099968 68784 Average: 159761 1721796 91.51 2620 1154867 1146153 39.12 429008 1130534 8606 18:48:01 IFACE rxpck/s txpck/s rxkB/s txkB/s rxcmp/s txcmp/s rxmcst/s 18:49:01 eth0 315.52 197.72 676.74 70.55 0.00 0.00 0.00 18:49:01 lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 18:49:01 docker0 1.76 1.55 0.31 3.42 0.00 0.00 0.00 18:50:01 eth0 0.82 0.07 0.07 0.01 0.00 0.00 0.00 18:50:01 lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 18:50:01 docker0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 18:51:01 eth0 1.47 0.72 0.59 0.40 0.00 0.00 0.00 18:51:01 lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 18:51:01 docker0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 18:52:01 eth0 0.10 0.08 0.01 0.01 0.00 0.00 0.00 18:52:01 lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 18:52:01 docker0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 18:53:02 eth0 0.22 0.17 0.08 0.07 0.00 0.00 0.00 18:53:02 lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 18:53:02 docker0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 18:54:01 eth0 1.10 0.46 0.39 0.18 0.00 0.00 0.00 18:54:01 lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 18:54:01 docker0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 18:55:01 eth0 0.75 0.08 0.06 0.04 0.00 0.00 0.00 18:55:01 lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 18:55:01 docker0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 18:56:01 eth0 92.62 61.70 2325.80 8.83 0.00 0.00 0.00 18:56:01 lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 18:56:01 docker0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Average: eth0 51.70 32.70 376.36 10.03 0.00 0.00 0.00 Average: lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Average: docker0 0.22 0.19 0.04 0.43 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) 18:47:23 LINUX RESTART 18:48:01 CPU %user %nice %system %iowait %steal %idle 18:49:01 all 5.80 0.00 1.91 1.45 0.01 90.82 18:49:01 0 5.87 0.00 2.14 1.56 0.02 90.42 18:49:01 1 5.90 0.00 1.99 3.19 0.02 88.91 18:49:01 2 5.19 0.00 1.80 0.67 0.00 92.34 18:49:01 3 6.28 0.00 1.70 0.38 0.02 91.61 18:50:01 all 0.08 0.00 0.04 0.00 0.00 99.87 18:50:01 0 0.25 0.00 0.07 0.00 0.00 99.68 18:50:01 1 0.05 0.00 0.05 0.00 0.00 99.90 18:50:01 2 0.02 0.00 0.02 0.00 0.00 99.97 18:50:01 3 0.02 0.00 0.02 0.00 0.00 99.97 18:51:01 all 0.14 0.00 0.03 0.00 0.00 99.84 18:51:01 0 0.37 0.00 0.03 0.00 0.00 99.60 18:51:01 1 0.08 0.00 0.03 0.00 0.00 99.88 18:51:01 2 0.05 0.00 0.02 0.00 0.00 99.93 18:51:01 3 0.03 0.00 0.02 0.00 0.00 99.95 18:52:01 all 0.14 0.00 0.02 0.00 0.00 99.84 18:52:01 0 0.50 0.00 0.00 0.00 0.02 99.48 18:52:01 1 0.03 0.00 0.03 0.00 0.00 99.93 18:52:01 2 0.03 0.00 0.03 0.00 0.00 99.93 18:52:01 3 0.00 0.00 0.02 0.00 0.00 99.98 18:53:02 all 0.09 0.00 0.04 0.00 0.00 99.86 18:53:02 0 0.27 0.00 0.05 0.00 0.00 99.68 18:53:02 1 0.05 0.00 0.08 0.00 0.00 99.87 18:53:02 2 0.05 0.00 0.02 0.00 0.02 99.92 18:53:02 3 0.02 0.00 0.00 0.00 0.00 99.98 18:54:01 all 0.09 0.00 0.04 0.00 0.00 99.87 18:54:01 0 0.25 0.00 0.02 0.00 0.00 99.73 18:54:01 1 0.03 0.00 0.07 0.00 0.00 99.90 18:54:01 2 0.03 0.00 0.05 0.00 0.00 99.92 18:54:01 3 0.03 0.00 0.03 0.00 0.00 99.93 18:55:01 all 0.15 0.00 0.02 0.00 0.00 99.83 18:55:01 0 0.52 0.00 0.02 0.00 0.02 99.45 18:55:01 1 0.03 0.00 0.02 0.00 0.00 99.95 18:55:01 2 0.03 0.00 0.03 0.00 0.00 99.93 18:55:01 3 0.02 0.00 0.00 0.00 0.00 99.98 18:56:01 all 4.31 0.00 1.91 1.39 0.01 92.39 18:56:01 0 3.83 0.00 1.99 1.25 0.00 92.92 18:56:01 1 3.71 0.00 1.71 0.10 0.02 94.47 18:56:01 2 5.54 0.00 2.16 3.36 0.00 88.94 18:56:01 3 4.13 0.00 1.81 0.87 0.00 93.19 Average: all 1.35 0.00 0.50 0.36 0.00 97.79 Average: 0 1.48 0.00 0.54 0.35 0.01 97.62 Average: 1 1.24 0.00 0.50 0.41 0.00 97.85 Average: 2 1.37 0.00 0.52 0.50 0.00 97.61 Average: 3 1.32 0.00 0.45 0.16 0.00 98.08