---> uname -a: Linux fae8e0835434 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 8.3G 41.7G 17% / 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 8.3G 41.7G 17% /etc/resolv.conf /dev/vda1 50.0G 8.3G 41.7G 17% /etc/hostname /dev/vda1 50.0G 8.3G 41.7G 17% /etc/hosts /dev/vda1 50.0G 8.3G 41.7G 17% /w/workspace/i-build-images_snapcraft-builder /dev/vda1 50.0G 8.3G 41.7G 17% /w/workspace/i-build-images_snapcraft-builder@tmp /dev/vda1 50.0G 8.3G 41.7G 17% /var/log/sa ---> free -m: total used free shared buff/cache available Mem: 1837 747 124 0 965 1009 Swap: 1023 2 1021 ---> 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 8: eth0@if9: 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) 07/14/20 _x86_64_ (4 CPU) 17:02:40 LINUX RESTART 17:03:02 tps rtps wtps bread/s bwrtn/s 17:04:01 168.08 42.59 125.49 7174.00 34168.14 17:05:01 250.90 25.32 225.58 2046.34 38009.44 17:06:01 489.79 308.25 181.54 19127.63 27131.90 17:07:01 464.14 335.43 128.70 21317.75 23418.07 Average: 344.05 178.54 165.51 12442.34 30665.42 17:03:02 kbmemfree kbmemused %memused kbbuffers kbcached kbcommit %commit kbactive kbinact kbdirty 17:04:01 127004 1754552 93.25 2620 1163920 1422048 48.53 416248 1166996 47180 17:05:01 101512 1780044 94.60 2596 1004496 1477216 50.41 452092 1025340 68544 17:06:01 83476 1798080 95.56 1492 1011864 1499868 51.19 502656 996312 49976 17:07:01 454164 1427392 75.86 728 733088 1102792 37.64 389080 777136 24 Average: 191539 1690017 89.82 1859 978342 1375481 46.94 440019 991446 41431 17:03:02 IFACE rxpck/s txpck/s rxkB/s txkB/s rxcmp/s txcmp/s rxmcst/s 17:04:01 veth945d394 91.66 126.66 6.45 787.54 0.00 0.00 0.00 17:04:01 eth0 634.33 403.37 2037.30 94.40 0.00 0.00 0.00 17:04:01 lo 0.12 0.12 0.01 0.01 0.00 0.00 0.00 17:04:01 docker0 91.66 126.52 5.19 787.53 0.00 0.00 0.00 17:05:01 veth945d394 486.58 562.67 39.08 4164.45 0.00 0.00 0.00 17:05:01 eth0 597.54 503.58 4191.40 53.46 0.00 0.00 0.00 17:05:01 lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 17:05:01 docker0 486.58 562.67 32.42 4164.45 0.00 0.00 0.00 17:06:01 eth0 23.30 12.10 18.95 10.17 0.00 0.00 0.00 17:06:01 lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 17:06:01 docker0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 17:07:01 eth0 10.71 7.69 8.51 3.37 0.00 0.00 0.00 17:07:01 lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 17:07:01 docker0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Average: eth0 307.78 226.66 1550.73 39.73 0.00 0.00 0.00 Average: lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Average: docker0 144.69 172.38 9.42 1239.10 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) 07/14/20 _x86_64_ (4 CPU) 17:02:40 LINUX RESTART 17:03:02 CPU %user %nice %system %iowait %steal %idle 17:04:01 all 17.42 0.00 7.97 4.98 0.06 69.57 17:04:01 0 16.87 0.00 9.90 4.96 0.05 68.22 17:04:01 1 17.01 0.00 7.26 3.96 0.03 71.73 17:04:01 2 18.53 0.00 7.28 2.93 0.09 71.18 17:04:01 3 17.24 0.00 7.44 8.11 0.09 67.11 17:05:01 all 12.74 0.00 5.05 1.19 0.03 80.99 17:05:01 0 11.22 0.00 4.25 1.34 0.03 83.15 17:05:01 1 11.20 0.00 4.64 1.19 0.02 82.96 17:05:01 2 14.83 0.00 5.70 1.29 0.02 78.16 17:05:01 3 13.70 0.00 5.59 0.93 0.02 79.76 17:06:01 all 7.41 0.00 6.57 11.68 0.07 74.27 17:06:01 0 6.65 0.00 6.62 10.18 0.07 76.49 17:06:01 1 6.98 0.00 6.14 11.41 0.07 75.40 17:06:01 2 7.99 0.00 6.80 10.65 0.07 74.50 17:06:01 3 8.04 0.00 6.73 14.51 0.08 70.63 17:07:01 all 4.46 0.00 6.55 10.25 0.07 78.67 17:07:01 0 4.33 0.00 5.64 10.29 0.07 79.67 17:07:01 1 4.66 0.00 6.71 11.68 0.07 76.88 17:07:01 2 4.37 0.00 7.91 9.39 0.07 78.27 17:07:01 3 4.51 0.00 5.90 9.65 0.07 79.87 Average: all 10.47 0.00 6.53 7.04 0.05 75.91 Average: 0 9.72 0.00 6.59 6.72 0.06 76.92 Average: 1 9.93 0.00 6.18 7.07 0.05 76.77 Average: 2 11.39 0.00 6.92 6.08 0.06 75.55 Average: 3 10.85 0.00 6.41 8.29 0.06 74.38