Cloud NWレイテンシー

## AWS
### 同一AZ(東京リージョン 1a to 1a)
およそ0.2ms

```
[centos@ip-172-26-100-53 mysql_monitor]$ ping 172.26.100.153 -c 10
PING 172.26.100.153 (172.26.100.153) 56(84) bytes of data.
64 bytes from 172.26.100.153: icmp_seq=1 ttl=64 time=0.199 ms
64 bytes from 172.26.100.153: icmp_seq=2 ttl=64 time=0.258 ms
64 bytes from 172.26.100.153: icmp_seq=3 ttl=64 time=0.222 ms
64 bytes from 172.26.100.153: icmp_seq=4 ttl=64 time=0.223 ms
64 bytes from 172.26.100.153: icmp_seq=5 ttl=64 time=0.219 ms
64 bytes from 172.26.100.153: icmp_seq=6 ttl=64 time=0.645 ms
64 bytes from 172.26.100.153: icmp_seq=7 ttl=64 time=0.222 ms
64 bytes from 172.26.100.153: icmp_seq=8 ttl=64 time=0.212 ms
64 bytes from 172.26.100.153: icmp_seq=9 ttl=64 time=0.245 ms
64 bytes from 172.26.100.153: icmp_seq=10 ttl=64 time=0.252 ms

--- 172.26.100.153 ping statistics ---
10 packets transmitted, 10 received, 0% packet loss, time 9000ms
rtt min/avg/max/mdev = 0.199/0.269/0.645/0.127 ms
```

### 異なるAZ(東京リージョン 1a to 1c)
およそ2~3ms

```
[centos@ip-172-26-100-53 mysql_monitor]$ ping 172.26.101.183 -c 10
PING 172.26.101.183 (172.26.101.183) 56(84) bytes of data.
64 bytes from 172.26.101.183: icmp_seq=1 ttl=64 time=2.46 ms
64 bytes from 172.26.101.183: icmp_seq=2 ttl=64 time=2.50 ms
64 bytes from 172.26.101.183: icmp_seq=3 ttl=64 time=2.50 ms
64 bytes from 172.26.101.183: icmp_seq=4 ttl=64 time=2.46 ms
64 bytes from 172.26.101.183: icmp_seq=5 ttl=64 time=2.50 ms
64 bytes from 172.26.101.183: icmp_seq=6 ttl=64 time=2.51 ms
64 bytes from 172.26.101.183: icmp_seq=7 ttl=64 time=2.45 ms
64 bytes from 172.26.101.183: icmp_seq=8 ttl=64 time=2.49 ms
64 bytes from 172.26.101.183: icmp_seq=9 ttl=64 time=2.50 ms
64 bytes from 172.26.101.183: icmp_seq=10 ttl=64 time=2.44 ms

--- 172.26.101.183 ping statistics ---
10 packets transmitted, 10 received, 0% packet loss, time 9015ms
rtt min/avg/max/mdev = 2.445/2.486/2.519/0.026 ms
```

## OCI

### 同一AD（大阪リージョン　AP-OSAKA-1-AD-1）
東京、大阪でADは1つずつしかない。

```
$ ping 10.0.0.5 -c 10
PING 10.0.0.5 (10.0.0.5) 56(84) bytes of data.
64 bytes from 10.0.0.5: icmp_seq=1 ttl=64 time=0.514 ms
64 bytes from 10.0.0.5: icmp_seq=2 ttl=64 time=0.289 ms
64 bytes from 10.0.0.5: icmp_seq=3 ttl=64 time=0.299 ms
64 bytes from 10.0.0.5: icmp_seq=4 ttl=64 time=0.265 ms
64 bytes from 10.0.0.5: icmp_seq=5 ttl=64 time=0.280 ms
64 bytes from 10.0.0.5: icmp_seq=6 ttl=64 time=0.242 ms
64 bytes from 10.0.0.5: icmp_seq=7 ttl=64 time=0.266 ms
64 bytes from 10.0.0.5: icmp_seq=8 ttl=64 time=0.217 ms
64 bytes from 10.0.0.5: icmp_seq=9 ttl=64 time=0.247 ms
64 bytes from 10.0.0.5: icmp_seq=10 ttl=64 time=0.323 ms

--- 10.0.0.5 ping statistics ---
10 packets transmitted, 10 received, 0% packet loss, time 8999ms
rtt min/avg/max/mdev = 0.217/0.294/0.514/0.079 ms
```

### 異なるリージョン（大阪リージョン to 東京リージョン）

```
$ ping 172.16.0.5 -c 10
PING 172.16.0.5 (172.16.0.5) 56(84) bytes of data.
64 bytes from 172.16.0.5: icmp_seq=1 ttl=62 time=8.47 ms
64 bytes from 172.16.0.5: icmp_seq=2 ttl=62 time=8.38 ms
64 bytes from 172.16.0.5: icmp_seq=3 ttl=62 time=8.42 ms
64 bytes from 172.16.0.5: icmp_seq=4 ttl=62 time=8.38 ms
64 bytes from 172.16.0.5: icmp_seq=5 ttl=62 time=8.39 ms
64 bytes from 172.16.0.5: icmp_seq=6 ttl=62 time=8.38 ms
64 bytes from 172.16.0.5: icmp_seq=7 ttl=62 time=8.47 ms
64 bytes from 172.16.0.5: icmp_seq=8 ttl=62 time=8.44 ms
64 bytes from 172.16.0.5: icmp_seq=9 ttl=62 time=8.41 ms
64 bytes from 172.16.0.5: icmp_seq=10 ttl=62 time=8.37 ms

--- 172.16.0.5 ping statistics ---
10 packets transmitted, 10 received, 0% packet loss, time 9014ms
rtt min/avg/max/mdev = 8.378/8.415/8.478/0.079 ms
```