---> uname -a: Linux localhost.localdomain 3.10.0-1127.19.1.el7.x86_64 #1 SMP Tue Aug 25 17:23:54 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux ---> lscpu: Architecture: x86_64 CPU op-mode(s): 32-bit, 64-bit Byte Order: Little Endian CPU(s): 4 On-line CPU(s) list: 0-3 Thread(s) per core: 1 Core(s) per socket: 4 Socket(s): 1 NUMA node(s): 1 Vendor ID: GenuineIntel CPU family: 6 Model: 158 Model name: Intel(R) Core(TM) i7-7820HQ CPU @ 2.90GHz Stepping: 9 CPU MHz: 2903.998 BogoMIPS: 5807.99 Hypervisor vendor: KVM Virtualization type: full L1d cache: 32K L1i cache: 32K L2 cache: 256K L3 cache: 8192K NUMA node0 CPU(s): 0-3 Flags: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx rdtscp lm constant_tsc rep_good nopl xtopology nonstop_tsc eagerfpu pni pclmulqdq ssse3 cx16 pcid sse4_1 sse4_2 x2apic movbe popcnt aes xsave avx rdrand hypervisor lahf_lm abm 3dnowprefetch invpcid_single fsgsbase avx2 invpcid rdseed clflushopt md_clear flush_l1d ---> nproc: 4 ---> df -h: Filesystem Size Used Avail Use% Mounted on devtmpfs 1.9G 0 1.9G 0% /dev tmpfs 1.9G 0 1.9G 0% /dev/shm tmpfs 1.9G 9.5M 1.9G 1% /run tmpfs 1.9G 0 1.9G 0% /sys/fs/cgroup /dev/mapper/centos-root 17G 16G 998M 95% / /dev/sda1 1014M 185M 830M 19% /boot tmpfs 379M 36K 379M 1% /run/user/1000 /dev/sr0 59M 59M 0 100% /run/media/roland/VBox_GAs_6.1.14 /dev/sr1 4.5G 4.5G 0 100% /run/media/roland/CentOS 7 x86_64 ---> free -m: total used free shared buff/cache available Mem: 3789 1641 963 83 1184 1786 Swap: 1999 14 1985 ---> ip addr: 1: lo: mtu 65536 qdisc noqueue state UNKNOWN group default 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: enp0s3: mtu 1500 qdisc pfifo_fast state UP group default qlen 1000 link/ether 08:00:27:d5:32:66 brd ff:ff:ff:ff:ff:ff inet 10.0.2.15/24 brd 10.0.2.255 scope global noprefixroute dynamic enp0s3 valid_lft 81092sec preferred_lft 81092sec inet6 fe80::cbfc:b98b:e398:ce16/64 scope link noprefixroute valid_lft forever preferred_lft forever 3: enp0s8: mtu 1500 qdisc pfifo_fast state UP group default qlen 1000 link/ether 08:00:27:ae:2b:69 brd ff:ff:ff:ff:ff:ff inet 192.168.99.99/24 brd 192.168.99.255 scope global noprefixroute enp0s8 valid_lft forever preferred_lft forever inet6 fe80::4850:c23f:670e:80fc/64 scope link noprefixroute valid_lft forever preferred_lft forever 4: virbr0: mtu 1500 qdisc noqueue state DOWN group default qlen 1000 link/ether 52:54:00:69:1d:c3 brd ff:ff:ff:ff:ff:ff inet 192.168.122.1/24 brd 192.168.122.255 scope global virbr0 valid_lft forever preferred_lft forever 5: virbr0-nic: mtu 1500 qdisc pfifo_fast master virbr0 state DOWN group default qlen 1000 link/ether 52:54:00:69:1d:c3 brd ff:ff:ff:ff:ff:ff 6: docker0: mtu 1500 qdisc noqueue state DOWN group default link/ether 02:42:2a:31:9c:fd brd ff:ff:ff:ff:ff:ff inet 172.17.0.1/16 scope global docker0 valid_lft forever preferred_lft forever ---> sar -b -r -n DEV: Linux 3.10.0-1127.19.1.el7.x86_64 (localhost.localdomain) 12/01/2020 _x86_64_ (4 CPU) 12:14:10 PM tps rtps wtps bread/s bwrtn/s 12:14:12 PM 0.50 0.00 0.50 0.00 4.00 12:14:14 PM 0.00 0.00 0.00 0.00 0.00 12:14:16 PM 0.00 0.00 0.00 0.00 0.00 Average: 0.17 0.00 0.17 0.00 1.33 12:14:10 PM kbmemfree kbmemused %memused kbbuffers kbcached kbcommit %commit kbactive kbinact kbdirty 12:14:12 PM 1089496 2790456 71.92 56 997844 5170648 87.22 1151872 1126696 44 12:14:14 PM 1089496 2790456 71.92 56 997856 5170648 87.22 1151880 1126700 56 12:14:16 PM 1089496 2790456 71.92 56 997868 5170648 87.22 1151888 1126704 68 Average: 1089496 2790456 71.92 56 997856 5170648 87.22 1151880 1126700 56 12:14:10 PM IFACE rxpck/s txpck/s rxkB/s txkB/s rxcmp/s txcmp/s rxmcst/s 12:14:12 PM enp0s3 0.00 0.00 0.00 0.00 0.00 0.00 0.00 12:14:12 PM enp0s8 0.00 0.00 0.00 0.00 0.00 0.00 0.00 12:14:12 PM lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 12:14:12 PM virbr0-nic 0.00 0.00 0.00 0.00 0.00 0.00 0.00 12:14:12 PM virbr0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 12:14:12 PM docker0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 12:14:14 PM enp0s3 0.00 0.00 0.00 0.00 0.00 0.00 0.00 12:14:14 PM enp0s8 0.00 0.00 0.00 0.00 0.00 0.00 0.00 12:14:14 PM lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 12:14:14 PM virbr0-nic 0.00 0.00 0.00 0.00 0.00 0.00 0.00 12:14:14 PM virbr0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 12:14:14 PM docker0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 12:14:16 PM enp0s3 0.00 0.00 0.00 0.00 0.00 0.00 0.00 12:14:16 PM enp0s8 0.00 0.00 0.00 0.00 0.00 0.00 0.00 12:14:16 PM lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 12:14:16 PM virbr0-nic 0.00 0.00 0.00 0.00 0.00 0.00 0.00 12:14:16 PM virbr0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 12:14:16 PM docker0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Average: enp0s3 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Average: enp0s8 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Average: lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Average: virbr0-nic 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Average: virbr0 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 3.10.0-1127.19.1.el7.x86_64 (localhost.localdomain) 12/01/2020 _x86_64_ (4 CPU) 12:14:10 PM CPU %user %nice %system %iowait %steal %idle 12:14:12 PM all 0.38 0.00 0.25 0.00 0.00 99.37 12:14:12 PM 0 0.50 0.00 0.50 0.00 0.00 98.99 12:14:12 PM 1 0.50 0.00 0.50 0.00 0.00 99.00 12:14:12 PM 2 0.50 0.00 0.00 0.00 0.00 99.50 12:14:12 PM 3 0.00 0.00 0.00 0.00 0.00 100.00 12:14:14 PM all 0.63 0.00 0.13 0.00 0.00 99.25 12:14:14 PM 0 1.51 0.00 0.50 0.00 0.00 97.99 12:14:14 PM 1 0.00 0.00 0.00 0.00 0.00 100.00 12:14:14 PM 2 0.00 0.00 0.00 0.00 0.00 100.00 12:14:14 PM 3 0.50 0.00 0.50 0.00 0.00 99.00 12:14:16 PM all 0.37 0.00 0.25 0.00 0.00 99.38 12:14:16 PM 0 0.50 0.00 0.00 0.00 0.00 99.50 12:14:16 PM 1 0.50 0.00 0.00 0.00 0.00 99.50 12:14:16 PM 2 0.50 0.00 0.00 0.00 0.00 99.50 12:14:16 PM 3 0.00 0.00 0.00 0.00 0.00 100.00 Average: all 0.46 0.00 0.21 0.00 0.00 99.33 Average: 0 0.84 0.00 0.34 0.00 0.00 98.83 Average: 1 0.33 0.00 0.17 0.00 0.00 99.50 Average: 2 0.33 0.00 0.00 0.00 0.00 99.67 Average: 3 0.17 0.00 0.17 0.00 0.00 99.67