---> uname -a: Linux 67aff3021d21 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% /var/log/sa /dev/vda1 50.0G 7.2G 42.8G 14% /w/workspace/gexfoundry_device-mqtt-go_PR-151 /dev/vda1 50.0G 7.2G 42.8G 14% /w/workspace/gexfoundry_device-mqtt-go_PR-151@tmp ---> free -m: total used free shared buff/cache available Mem: 1837 621 132 0 1083 1110 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) 06/11/20 _x86_64_ (4 CPU) 02:02:45 LINUX RESTART 02:04:01 tps rtps wtps bread/s bwrtn/s 02:05:01 5.87 0.73 5.14 50.40 140.59 02:06:01 0.41 0.00 0.41 0.00 5.49 02:07:01 0.28 0.00 0.28 0.00 3.49 02:08:01 0.30 0.00 0.30 0.00 2.89 02:09:01 0.33 0.00 0.33 0.00 5.13 02:10:01 0.27 0.02 0.25 0.13 2.91 02:11:01 0.23 0.00 0.23 0.00 2.20 02:12:01 0.25 0.00 0.25 0.00 3.50 02:13:01 146.63 88.83 57.80 7174.07 19922.39 Average: 17.21 9.98 7.24 804.53 2237.06 02:04:01 kbmemfree kbmemused %memused kbbuffers kbcached kbcommit %commit kbactive kbinact kbdirty 02:05:01 169672 1711884 90.98 2620 1166532 1133884 38.70 416144 1135228 20 02:06:01 179312 1702244 90.47 2620 1166540 1065632 36.37 410276 1133052 16 02:07:01 178880 1702676 90.49 2620 1166544 1065392 36.36 411060 1132904 20 02:08:01 178824 1702732 90.50 2620 1166544 1065392 36.36 413568 1130652 8 02:09:01 177776 1703780 90.55 2620 1166552 1065688 36.37 414748 1130652 8 02:10:01 175648 1705908 90.66 2620 1166564 1065676 36.37 449008 1098684 16 02:11:01 176624 1704932 90.61 2620 1166568 1065460 36.36 440852 1105732 16 02:12:01 176664 1704892 90.61 2620 1166572 1065460 36.36 440748 1105732 8 02:13:01 70612 1810944 96.25 2620 1096048 2087184 71.23 530180 1078292 28 Average: 164890 1716666 91.24 2620 1158718 1186641 40.50 436287 1116770 16 02:04:01 IFACE rxpck/s txpck/s rxkB/s txkB/s rxcmp/s txcmp/s rxmcst/s 02:05:01 eth0 18.88 15.67 21.63 26.27 0.00 0.00 0.00 02:05:01 lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 02:05:01 docker0 1.50 1.26 0.30 3.25 0.00 0.00 0.00 02:06:01 eth0 0.61 0.35 0.31 0.17 0.00 0.00 0.00 02:06:01 lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 02:06:01 docker0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 02:07:01 eth0 1.05 0.08 0.07 0.04 0.00 0.00 0.00 02:07:01 lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 02:07:01 docker0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 02:08:01 eth0 0.15 0.08 0.01 0.01 0.00 0.00 0.00 02:08:01 lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 02:08:01 docker0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 02:09:01 eth0 0.63 0.55 0.41 0.27 0.00 0.00 0.00 02:09:01 lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 02:09:01 docker0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 02:10:01 eth0 0.53 0.30 0.27 0.20 0.00 0.00 0.00 02:10:01 lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 02:10:01 docker0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 02:11:01 eth0 0.08 0.08 0.01 0.01 0.00 0.00 0.00 02:11:01 lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 02:11:01 docker0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 02:12:01 eth0 0.07 0.07 0.01 0.01 0.00 0.00 0.00 02:12:01 lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 02:12:01 docker0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 02:13:01 veth8e0cd42 0.00 0.00 0.00 0.00 0.00 0.00 0.00 02:13:01 eth0 361.04 237.45 3399.51 101.38 0.00 0.00 0.00 02:13:01 lo 0.12 0.12 0.01 0.01 0.00 0.00 0.00 02:13:01 veth8255df7 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Average: veth8e0cd42 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Average: eth0 40.21 26.44 378.57 11.29 0.00 0.00 0.00 Average: lo 0.01 0.01 0.00 0.00 0.00 0.00 0.00 Average: veth8255df7 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) 06/11/20 _x86_64_ (4 CPU) 02:02:45 LINUX RESTART 02:04:01 CPU %user %nice %system %iowait %steal %idle 02:05:01 all 1.30 0.00 0.57 0.02 2.67 95.44 02:05:01 0 1.12 0.00 0.51 0.03 2.82 95.51 02:05:01 1 1.18 0.00 0.51 0.02 2.47 95.83 02:05:01 2 2.02 0.00 0.76 0.03 2.52 94.66 02:05:01 3 0.86 0.00 0.49 0.03 2.84 95.78 02:06:01 all 0.12 0.00 0.10 0.00 0.86 98.92 02:06:01 0 0.03 0.00 0.13 0.00 0.58 99.26 02:06:01 1 0.26 0.00 0.10 0.00 0.84 98.79 02:06:01 2 0.07 0.00 0.10 0.00 0.83 99.01 02:06:01 3 0.13 0.00 0.08 0.00 1.22 98.57 02:07:01 all 0.20 0.00 0.16 0.00 3.68 95.97 02:07:01 0 0.05 0.00 0.13 0.00 3.87 95.95 02:07:01 1 0.31 0.00 0.26 0.00 4.24 95.18 02:07:01 2 0.28 0.00 0.13 0.00 3.82 95.77 02:07:01 3 0.13 0.00 0.08 0.00 2.78 97.01 02:08:01 all 0.18 0.00 0.15 0.00 2.67 97.00 02:08:01 0 0.05 0.00 0.10 0.00 1.98 97.87 02:08:01 1 0.23 0.00 0.18 0.00 2.68 96.90 02:08:01 2 0.25 0.00 0.19 0.02 2.35 97.20 02:08:01 3 0.18 0.00 0.15 0.00 3.66 96.01 02:09:01 all 0.11 0.00 0.05 0.00 0.41 99.43 02:09:01 0 0.05 0.00 0.02 0.00 0.51 99.42 02:09:01 1 0.30 0.00 0.07 0.00 0.68 98.95 02:09:01 2 0.05 0.00 0.07 0.00 0.30 99.58 02:09:01 3 0.07 0.00 0.02 0.00 0.13 99.78 02:10:01 all 0.09 0.00 0.10 0.00 0.50 99.32 02:10:01 0 0.02 0.00 0.02 0.00 0.18 99.78 02:10:01 1 0.28 0.00 0.05 0.00 1.09 98.58 02:10:01 2 0.02 0.00 0.32 0.00 0.38 99.29 02:10:01 3 0.00 0.00 0.02 0.00 0.33 99.65 02:11:01 all 0.12 0.00 0.02 0.00 0.32 99.54 02:11:01 0 0.02 0.00 0.02 0.00 0.17 99.80 02:11:01 1 0.40 0.00 0.03 0.00 0.56 99.00 02:11:01 2 0.05 0.00 0.02 0.00 0.28 99.65 02:11:01 3 0.03 0.00 0.03 0.00 0.27 99.67 02:12:01 all 0.13 0.00 0.02 0.00 0.09 99.76 02:12:01 0 0.02 0.00 0.02 0.00 0.05 99.92 02:12:01 1 0.45 0.00 0.02 0.00 0.15 99.38 02:12:01 2 0.03 0.00 0.02 0.00 0.13 99.82 02:12:01 3 0.02 0.00 0.03 0.00 0.03 99.92 02:13:01 all 3.95 0.00 2.45 1.72 6.01 85.87 02:13:01 0 3.43 0.00 2.68 1.12 5.89 86.89 02:13:01 1 4.84 0.00 2.06 2.40 6.50 84.20 02:13:01 2 3.23 0.00 2.56 1.89 5.90 86.42 02:13:01 3 4.31 0.00 2.46 1.44 5.76 86.02 Average: all 0.68 0.00 0.40 0.19 1.91 96.82 Average: 0 0.52 0.00 0.40 0.13 1.78 97.17 Average: 1 0.91 0.00 0.36 0.27 2.13 96.32 Average: 2 0.66 0.00 0.46 0.21 1.83 96.83 Average: 3 0.63 0.00 0.37 0.16 1.88 96.96