---> uname -a: Linux prd-centos7-docker-4c-2g-3008.vexxhost.local 3.10.0-1160.21.1.el7.x86_64 #1 SMP Tue Mar 16 18:28:22 UTC 2021 x86_64 Linux ---> lscpu: Architecture: x86_64 CPU op-mode(s): 32-bit, 64-bit Address sizes: 40 bits physical, 48 bits virtual Byte Order: Little Endian CPU(s): 2 On-line CPU(s) list: 0,1 Vendor ID: AuthenticAMD BIOS Vendor ID: QEMU Model name: AMD EPYC-Rome Processor BIOS Model name: pc-i440fx-4.2 CPU family: 23 Model: 49 Thread(s) per core: 1 Core(s) per socket: 1 Socket(s): 2 Stepping: 0 BogoMIPS: 5599.99 Flags: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 syscall nx mmxext fxsr_opt pdpe1gb rdtscp lm art rep_good nopl extd_apicid eagerfpu pni pclmulqdq ssse3 fma cx16 sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand hypervisor lahf_lm cmp_legacy svm cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw topoext perfctr_core retpoline_amd ssbd ibrs ibpb stibp vmmcall fsgsbase tsc_adjust bmi1 avx2 smep bmi2 rdseed adx smap clflushopt clwb sha_ni xsaveopt xsavec xgetbv1 clzero xsaveerptr arat npt nrip_save umip spec_ctrl intel_stibp arch_capabilities Virtualization: AMD-V Hypervisor vendor: KVM Virtualization type: full L1d cache: 64 KiB (2 instances) L1i cache: 64 KiB (2 instances) L2 cache: 1 MiB (2 instances) L3 cache: 32 MiB (2 instances) NUMA node(s): 1 NUMA node0 CPU(s): 0,1 Vulnerability Itlb multihit: Not affected Vulnerability L1tf: Not affected Vulnerability Mds: Not affected Vulnerability Meltdown: Not affected 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 ---> nproc: 2 ---> df -h: Filesystem Size Used Available Use% Mounted on overlay 40.0G 12.5G 27.5G 31% / tmpfs 64.0M 0 64.0M 0% /dev tmpfs 3.8G 0 3.8G 0% /sys/fs/cgroup shm 64.0M 0 64.0M 0% /dev/shm /dev/vda1 40.0G 12.5G 27.5G 31% /facter-os /dev/vda1 40.0G 12.5G 27.5G 31% /etc/resolv.conf /dev/vda1 40.0G 12.5G 27.5G 31% /etc/hostname /dev/vda1 40.0G 12.5G 27.5G 31% /etc/hosts /dev/vda1 40.0G 12.5G 27.5G 31% /var/log/auth.log /dev/vda1 40.0G 12.5G 27.5G 31% /run/cloud-init/result.json /dev/vda1 40.0G 12.5G 27.5G 31% /var/log/sa-host /dev/vda1 40.0G 12.5G 27.5G 31% /var/log/secure /dev/vda1 40.0G 12.5G 27.5G 31% /w/workspace/edgex-go/2 /dev/vda1 40.0G 12.5G 27.5G 31% /w/workspace/edgex-go/2@tmp ---> free -m: total used free shared buff/cache available Mem: 7821 1025 2083 0 4712 6480 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 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:08:08:aa brd ff:ff:ff:ff:ff:ff inet 10.30.122.74/23 brd 10.30.123.255 scope global dynamic eth0 valid_lft 84867sec preferred_lft 84867sec inet6 fe80::f816:3eff:fe08:8aa/64 scope link valid_lft forever preferred_lft forever 3: docker0: mtu 1500 qdisc noqueue state DOWN link/ether 02:42:8e:a9:27:ef 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::42:8eff:fea9:27ef/64 scope link valid_lft forever preferred_lft forever ---> sar -b -r -n DEV: Linux 3.10.0-1160.21.1.el7.x86_64 (centos-7-docker-606adb87-c9a3-b56e-c965-7bc42a059c0f.vexxhost.lo) 07/15/21 _x86_64_ (2 CPU) 23:01:58 LINUX RESTART (2 CPU) 23:03:01 tps rtps wtps dtps bread/s bwrtn/s bdscd/s 23:04:01 26.94 0.18 26.76 0.00 22.78 16409.22 0.00 23:05:01 170.26 0.00 170.26 0.00 0.00 43381.63 0.00 23:06:01 55.96 0.00 55.96 0.00 0.00 10697.39 0.00 23:07:01 58.40 0.02 58.38 0.00 0.53 8731.96 0.00 23:08:02 907.98 437.77 470.21 0.00 17821.82 308281.30 0.00 23:09:01 525.79 49.20 476.59 0.00 2374.29 220224.67 0.00 23:10:01 282.35 26.62 255.73 0.00 3523.14 33961.92 0.00 23:11:01 1.40 0.00 1.40 0.00 0.00 24.03 0.00 23:12:01 0.23 0.00 0.23 0.00 0.00 2.83 0.00 23:13:01 0.25 0.00 0.25 0.00 0.00 2.18 0.00 23:14:01 0.28 0.00 0.28 0.00 0.00 3.30 0.00 23:15:01 0.27 0.00 0.27 0.00 0.00 2.88 0.00 23:16:01 0.28 0.00 0.28 0.00 0.00 3.55 0.00 23:17:01 0.43 0.18 0.25 0.00 5.73 2.33 0.00 23:18:01 0.95 0.18 0.77 0.00 17.06 16.39 0.00 23:19:01 0.25 0.00 0.25 0.00 0.00 2.47 0.00 23:20:01 0.23 0.00 0.23 0.00 0.00 3.28 0.00 23:21:01 0.27 0.00 0.27 0.00 0.00 3.56 0.00 23:22:01 0.23 0.00 0.23 0.00 0.00 2.97 0.00 23:23:01 0.27 0.00 0.27 0.00 0.00 3.17 0.00 23:24:01 0.25 0.00 0.25 0.00 0.00 2.43 0.00 23:25:01 0.18 0.00 0.18 0.00 0.00 1.77 0.00 23:26:01 0.28 0.00 0.28 0.00 0.00 3.13 0.00 23:27:01 0.30 0.00 0.30 0.00 0.00 2.91 0.00 Average: 84.53 21.43 63.10 0.00 990.35 26635.74 0.00 23:03:01 kbmemfree kbavail kbmemused %memused kbbuffers kbcached kbcommit %commit kbactive kbinact kbdirty 23:04:01 4286764 0 928184 11.59 2620 2791372 1672808 18.47 1146068 2128856 572088 23:05:01 4007792 0 1043648 13.03 2620 2954880 1562620 17.25 1216296 2242848 177932 23:06:01 3748560 0 1132856 14.14 2620 3124904 1592096 17.58 1388064 2311972 36844 23:07:01 3712008 0 1160952 14.50 2620 3133360 1835496 20.26 1347524 2400216 242280 23:08:02 724776 0 1500168 18.73 2620 5781376 3253792 35.92 2551728 4020048 728 23:09:01 700412 0 1499460 18.72 2620 5806448 3460952 38.21 2796872 3771900 42280 23:10:01 2749744 0 1246700 15.57 2620 4009876 1485648 16.40 1351936 3196988 20 23:11:01 2766028 0 1230408 15.36 2620 4009884 1265884 13.98 1358236 3180076 20 23:12:01 2765392 0 1231040 15.37 2620 4009888 1266164 13.98 1358668 3180076 8 23:13:01 2766288 0 1230140 15.36 2620 4009892 1266080 13.98 1359096 3180076 8 23:14:01 2766428 0 1229996 15.36 2620 4009896 1266104 13.98 1358960 3180228 8 23:15:01 2766244 0 1230176 15.36 2620 4009900 1266176 13.98 1359248 3180228 8 23:16:01 2767300 0 1229112 15.35 2620 4009908 1265948 13.98 1358140 3180228 8 23:17:01 2765724 0 1230688 15.37 2620 4009908 1267688 14.00 1359680 3180228 8 23:18:01 2766380 0 1229508 15.35 2620 4010432 1266104 13.98 1361608 3177748 8 23:19:01 2766828 0 1229060 15.35 2620 4010432 1265948 13.98 1361176 3177748 12 23:20:01 2766828 0 1229052 15.35 2620 4010440 1265948 13.98 1361300 3177748 8 23:21:01 2766200 0 1229676 15.35 2620 4010444 1266152 13.98 1361652 3177748 20 23:22:01 2766172 0 1229704 15.35 2620 4010444 1266080 13.98 1361504 3177748 8 23:23:01 2766352 0 1229516 15.35 2620 4010452 1266056 13.98 1361568 3177748 8 23:24:01 2766508 0 1229360 15.35 2620 4010452 1266032 13.98 1361612 3177748 8 23:25:01 2766868 0 1228992 15.35 2620 4010460 1265948 13.98 1361212 3177748 8 23:26:01 2767188 0 1228668 15.34 2620 4010464 1265948 13.98 1361184 3177748 8 23:27:01 2766544 0 1229304 15.35 2620 4010472 1266104 13.98 1361656 3177748 8 Average: 2789972 0 1225682 15.30 2620 3990666 1516157 16.74 1455208 3087977 44681 23:03:01 IFACE rxpck/s txpck/s rxkB/s txkB/s rxcmp/s txcmp/s rxmcst/s %ifutil 23:04:01 eth0 1388.10 1460.42 5665.44 132.81 0.00 0.00 0.00 0.00 23:04:01 lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 23:04:01 docker0 1141.53 921.11 84.33 2707.51 0.00 0.00 0.00 0.00 23:05:01 veth4db2711 0.00 0.13 0.00 0.01 0.00 0.00 0.00 0.00 23:05:01 eth0 360.35 271.92 883.46 35.83 0.00 0.00 0.00 0.00 23:05:01 lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 23:05:01 docker0 249.83 315.07 17.58 847.63 0.00 0.00 0.00 0.00 23:06:01 veth4db2711 2.16 2.16 0.17 0.18 0.00 0.00 0.00 0.00 23:06:01 eth0 31.44 16.80 22.45 11.40 0.00 0.00 0.00 0.00 23:06:01 lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 23:06:01 docker0 2.16 2.16 0.14 0.18 0.00 0.00 0.00 0.00 23:07:01 eth0 265.32 184.52 1695.16 137.40 0.00 0.00 0.00 0.00 23:07:01 lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 23:07:01 docker0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 23:08:02 veth4a784b4 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 23:08:02 veth072d815 0.00 0.12 0.00 0.01 0.00 0.00 0.00 0.00 23:08:02 veth89f5cc5 0.00 0.12 0.00 0.01 0.00 0.00 0.00 0.00 23:08:02 veth1b9997d 0.05 0.18 0.00 0.01 0.00 0.00 0.00 0.00 23:09:01 veth34e7f23 0.00 0.19 0.00 0.01 0.00 0.00 0.00 0.00 23:09:01 vethff7b598 0.00 0.17 0.00 0.01 0.00 0.00 0.00 0.00 23:09:01 veth18e4714 0.00 1.13 0.00 0.06 0.00 0.00 0.00 0.00 23:09:01 veth2a260b8 14.87 51.97 1.10 290.96 0.00 0.00 0.00 0.00 23:10:01 eth0 3600.10 2865.95 14149.99 582.75 0.00 0.00 0.00 0.00 23:10:01 lo 0.12 0.12 0.01 0.01 0.00 0.00 0.00 0.00 23:10:01 docker0 1516.40 1456.36 110.15 4401.15 0.00 0.00 0.00 0.00 23:11:01 eth0 0.77 0.32 0.07 0.04 0.00 0.00 0.00 0.00 23:11:01 lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 23:11:01 docker0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 23:12:01 eth0 0.60 0.45 0.28 0.21 0.00 0.00 0.00 0.00 23:12:01 lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 23:12:01 docker0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 23:13:01 eth0 0.92 0.18 0.14 0.04 0.00 0.00 0.00 0.00 23:13:01 lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 23:13:01 docker0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 23:14:01 eth0 0.25 0.20 0.07 0.04 0.00 0.00 0.00 0.00 23:14:01 lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 23:14:01 docker0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 23:15:01 eth0 0.70 0.52 0.48 0.21 0.00 0.00 0.00 0.00 23:15:01 lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 23:15:01 docker0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 23:16:01 eth0 0.12 0.08 0.01 0.01 0.00 0.00 0.00 0.00 23:16:01 lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 23:16:01 docker0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 23:17:01 eth0 0.57 0.08 0.06 0.01 0.00 0.00 0.00 0.00 23:17:01 lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 23:17:01 docker0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 23:18:01 eth0 0.62 0.43 0.40 0.27 0.00 0.00 0.00 0.00 23:18:01 lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 23:18:01 docker0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 23:19:01 eth0 0.10 0.10 0.01 0.01 0.00 0.00 0.00 0.00 23:19:01 lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 23:19:01 docker0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 23:20:01 eth0 0.77 0.08 0.06 0.01 0.00 0.00 0.00 0.00 23:20:01 lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 23:20:01 docker0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 23:21:01 eth0 0.83 0.23 0.31 0.19 0.00 0.00 0.00 0.00 23:21:01 lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 23:21:01 docker0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 23:22:01 eth0 0.47 0.30 0.27 0.20 0.00 0.00 0.00 0.00 23:22:01 lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 23:22:01 docker0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 23:23:01 eth0 0.18 0.13 0.08 0.07 0.00 0.00 0.00 0.00 23:23:01 lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 23:23:01 docker0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 23:24:01 eth0 0.10 0.05 0.06 0.00 0.00 0.00 0.00 0.00 23:24:01 lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 23:24:01 docker0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 23:25:01 eth0 0.10 0.08 0.01 0.01 0.00 0.00 0.00 0.00 23:25:01 lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 23:25:01 docker0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 23:26:01 eth0 0.03 0.03 0.00 0.00 0.00 0.00 0.00 0.00 23:26:01 lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 23:26:01 docker0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 23:27:01 eth0 0.42 0.32 0.26 0.20 0.00 0.00 0.00 0.00 23:27:01 lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 23:27:01 docker0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Average: eth0 107.75 93.36 436.24 20.31 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 63.24 60.74 4.59 183.55 0.00 0.00 0.00 0.00 ---> sar -P ALL: Linux 3.10.0-1160.21.1.el7.x86_64 (centos-7-docker-606adb87-c9a3-b56e-c965-7bc42a059c0f.vexxhost.lo) 07/15/21 _x86_64_ (2 CPU) 23:01:58 LINUX RESTART (2 CPU) 23:03:01 CPU %user %nice %system %iowait %steal %idle 23:04:01 all 16.67 0.00 4.84 0.79 0.06 77.64 23:04:01 0 12.87 0.00 4.98 0.25 0.05 81.85 23:04:01 1 20.45 0.00 4.70 1.33 0.07 73.45 23:05:01 all 37.18 0.00 7.51 2.11 0.08 53.11 23:05:01 0 37.95 0.00 7.64 2.31 0.09 52.01 23:05:01 1 36.42 0.00 7.38 1.91 0.07 54.21 23:06:01 all 37.27 0.00 4.73 0.42 0.08 57.49 23:06:01 0 37.26 0.00 4.54 0.44 0.07 57.69 23:06:01 1 37.29 0.00 4.92 0.40 0.09 57.30 23:07:01 all 53.76 0.00 8.51 0.70 0.09 36.93 23:07:01 0 52.99 0.00 8.48 0.87 0.09 37.57 23:07:01 1 54.53 0.00 8.55 0.54 0.09 36.30 23:08:02 all 38.68 0.00 21.46 23.10 0.13 16.63 23:08:02 0 39.13 0.00 21.70 24.08 0.11 14.98 23:08:02 1 38.22 0.00 21.22 22.12 0.15 18.30 23:09:01 all 74.34 0.00 18.81 5.21 0.14 1.49 23:09:01 0 74.35 0.00 18.68 5.62 0.13 1.21 23:09:01 1 74.34 0.00 18.94 4.79 0.15 1.78 23:10:01 all 47.65 0.00 10.31 1.64 0.10 40.30 23:10:01 0 46.55 0.00 11.50 1.51 0.11 40.33 23:10:01 1 48.76 0.00 9.11 1.78 0.09 40.27 23:11:01 all 0.16 0.00 0.06 0.00 0.03 99.75 23:11:01 0 0.05 0.00 0.08 0.00 0.05 99.82 23:11:01 1 0.27 0.00 0.03 0.00 0.02 99.68 23:12:01 all 0.22 0.00 0.03 0.00 0.03 99.73 23:12:01 0 0.33 0.00 0.03 0.00 0.03 99.60 23:12:01 1 0.10 0.00 0.02 0.00 0.02 99.87 23:13:01 all 0.11 0.00 0.05 0.00 0.02 99.82 23:13:01 0 0.03 0.00 0.07 0.00 0.02 99.88 23:13:01 1 0.18 0.00 0.03 0.00 0.02 99.77 23:14:01 all 0.18 0.00 0.02 0.00 0.03 99.77 23:14:01 0 0.05 0.00 0.02 0.00 0.02 99.92 23:14:01 1 0.32 0.00 0.02 0.00 0.03 99.63 23:14:01 CPU %user %nice %system %iowait %steal %idle 23:15:01 all 0.10 0.00 0.03 0.00 0.02 99.86 23:15:01 0 0.02 0.00 0.02 0.00 0.02 99.95 23:15:01 1 0.18 0.00 0.03 0.00 0.02 99.77 23:16:01 all 0.10 0.00 0.02 0.00 0.03 99.85 23:16:01 0 0.17 0.00 0.02 0.00 0.03 99.78 23:16:01 1 0.03 0.00 0.02 0.00 0.03 99.92 23:17:01 all 0.04 0.00 0.04 0.00 0.02 99.90 23:17:01 0 0.07 0.00 0.05 0.00 0.02 99.87 23:17:01 1 0.02 0.00 0.03 0.00 0.02 99.93 23:18:01 all 0.05 0.00 0.03 0.01 0.03 99.87 23:18:01 0 0.08 0.00 0.03 0.00 0.03 99.85 23:18:01 1 0.02 0.00 0.03 0.02 0.03 99.90 23:19:01 all 0.10 0.00 0.03 0.00 0.02 99.86 23:19:01 0 0.15 0.00 0.02 0.00 0.00 99.83 23:19:01 1 0.05 0.00 0.03 0.00 0.03 99.88 23:20:01 all 0.11 0.00 0.03 0.00 0.02 99.85 23:20:01 0 0.20 0.00 0.03 0.00 0.02 99.75 23:20:01 1 0.02 0.00 0.02 0.00 0.02 99.95 23:21:01 all 0.13 0.00 0.03 0.00 0.03 99.81 23:21:01 0 0.22 0.00 0.03 0.00 0.02 99.73 23:21:01 1 0.05 0.00 0.03 0.00 0.03 99.88 23:22:01 all 0.13 0.00 0.03 0.00 0.03 99.82 23:22:01 0 0.22 0.00 0.02 0.00 0.00 99.77 23:22:01 1 0.03 0.00 0.03 0.00 0.05 99.88 23:23:01 all 0.15 0.00 0.03 0.00 0.03 99.80 23:23:01 0 0.27 0.00 0.03 0.00 0.02 99.68 23:23:01 1 0.03 0.00 0.02 0.00 0.03 99.92 23:24:01 all 0.09 0.00 0.02 0.00 0.02 99.87 23:24:01 0 0.15 0.00 0.02 0.00 0.02 99.82 23:24:01 1 0.03 0.00 0.02 0.00 0.02 99.93 23:25:01 all 0.12 0.00 0.03 0.00 0.02 99.83 23:25:01 0 0.07 0.00 0.03 0.00 0.00 99.90 23:25:01 1 0.17 0.00 0.03 0.00 0.03 99.77 23:25:01 CPU %user %nice %system %iowait %steal %idle 23:26:01 all 0.09 0.00 0.03 0.00 0.03 99.86 23:26:01 0 0.03 0.00 0.02 0.00 0.00 99.95 23:26:01 1 0.15 0.00 0.03 0.00 0.05 99.77 23:27:01 all 0.13 0.00 0.02 0.00 0.03 99.82 23:27:01 0 0.02 0.00 0.02 0.00 0.03 99.93 23:27:01 1 0.25 0.00 0.02 0.00 0.02 99.72 Average: all 12.09 0.00 3.00 1.32 0.04 83.54 Average: 0 11.93 0.00 3.06 1.37 0.04 83.60 Average: 1 12.25 0.00 2.94 1.28 0.05 83.48