IBM Cloud Docs
Network latency dashboards

Network latency dashboards

The Inter-region latency dashboard provides the average network round-trip latency (round-trip time or RTT) for all pairs of regions in IBM Cloud®. The dashboard shows a snapshot of inter-region RTT expressed in milliseconds. This snapshot is an average of multiple measurements over the previous 30 days. For each measurement, a pair of Linux VMs (of cx2-8x16 profile) is provisioned in the two corresponding regions in IBM Cloud. VM-to-VM network connectivity is provided by the Transit Gateway. Netperf TCP RR test is used for measuring the VM-to-VM latency between regions.

The Inter-AZ latency dashboard provides the average network RTT latency within a zone (Intra-Zone) and between availability zones (Inter-Zone) in a multi-zone region (MZR) in IBM Cloud. The dashboard shows a snapshot of inter-availability zone RTT expressed in milliseconds. This snapshot is an average of multiple measurements over the previous 30 days. For each measurement, a pair of Linux VMs (of cx2-8x16 profile) is provisioned in the two corresponding availability zones in the same VPC. VM-to-VM network connectivity is provided by the private network within the VPC. Netperf TCP RR test is used for measuring the VM-to-VM latency between the availability zones. The latency between storage and compute instances within the same zone is dependent on workload characteristics, and on average, expected target latency is in single-digit ms.

The results reported are as measured. There are no performance guarantees implied by these dashboards. These statistics provide visibility into latency between all regions and zones to help you plan the optimal selection for your cloud deployment and plan for scenarios, such as data residency and performance. These dashboards are not intended for use in troubleshooting.

For information about the mapping between regions and zones, see Zone mapping per account.

19 Oct 2025

Inter-region latency

20 Sep 2025–19 Oct 2025
Average latency (ms) Dallas Toronto Washington DC Frankfurt London Madrid Montreal Osaka Sydney Tokyo Sao Paulo
Dallas 33 31 122 112 119 42 149 186 142 142
Toronto 34 20 92 83 104 10 165 216 158 129
Washington DC 32 19 87 76 88 16 168 215 163 116
Frankfurt 122 93 87 13 29 89 232 249 224 196
London 112 83 76 13 27 79 243 260 235 185
Madrid 117 104 87 30 26 101 257 275 250 203
Montreal 42 10 16 89 79 104 172 222 166 125
Osaka 151 165 168 232 243 258 173 122 9 291
Sydney 185 212 214 248 260 275 223 122 116 326
Tokyo 143 158 162 224 235 250 166 9 116 282
Sao Paulo 142 128 116 194 184 203 125 289 326 283

Inter-AZ latency

20 Sep 2025–19 Oct 2025
Average latency (ms) us-south-dal10-a us-south-dal12-a us-south-dal13-a us-south-dal14-a
us-south-dal10-a 0.09 1.57 2.14 2.04
us-south-dal12-a 1.57 0.09 1.71 1.11
us-south-dal13-a 2.14 1.71 0.09 1.67
us-south-dal14-a 2.04 1.11 1.67 0.09
20 Sep 2025–19 Oct 2025
Average latency (ms) ca-tor-tor01-a ca-tor-tor04-a ca-tor-tor05-a
ca-tor-tor01-a 0.1 1.56 1.76
ca-tor-tor04-a 1.56 0.1 1.68
ca-tor-tor05-a 1.76 1.68 0.09
20 Sep 2025–19 Oct 2025
Average latency (ms) us-east-wdc04-a us-east-wdc06-a us-east-wdc07-a
us-east-wdc04-a 0.08 0.71 0.68
us-east-wdc06-a 0.71 0.1 0.29
us-east-wdc07-a 0.68 0.29 0.08
20 Sep 2025–19 Oct 2025
Average latency (ms) eu-de-fra02-a eu-de-fra04-a eu-de-fra05-a
eu-de-fra02-a 0.1 0.75 0.66
eu-de-fra04-a 0.75 0.11 0.46
eu-de-fra05-a 0.66 0.46 0.12
20 Sep 2025–19 Oct 2025
Average latency (ms) eu-gb-lon04-a eu-gb-lon05-a eu-gb-lon06-a
eu-gb-lon04-a 0.09 2.06 1.47
eu-gb-lon05-a 2.06 0.1 1.47
eu-gb-lon06-a 1.47 1.47 0.08
20 Sep 2025–19 Oct 2025
Average latency (ms) eu-es-mad02-a eu-es-mad04-a eu-es-mad05-a
eu-es-mad02-a 0.09 0.67 0.62
eu-es-mad04-a 0.67 0.12 0.8
eu-es-mad05-a 0.62 0.8 0.1
20 Sep 2025–19 Oct 2025
Average latency (ms) ca-mon-mon04-a ca-mon-mon04-b ca-mon-mon04-c
ca-mon-mon04-a 0.08 0.17 0.17
ca-mon-mon04-b 0.17 0.08 0.17
ca-mon-mon04-c 0.17 0.17 0.08
20 Sep 2025–19 Oct 2025
Average latency (ms) jp-osa-osa21-a jp-osa-osa22-a jp-osa-osa23-a
jp-osa-osa21-a 0.1 1.51 1.52
jp-osa-osa22-a 1.51 0.1 1.51
jp-osa-osa23-a 1.52 1.51 0.1
20 Sep 2025–19 Oct 2025
Average latency (ms) au-syd-syd01-a au-syd-syd04-a au-syd-syd05-a
au-syd-syd01-a 0.1 1.6 0.94
au-syd-syd04-a 1.6 0.09 1.75
au-syd-syd05-a 0.94 1.75 0.1
20 Sep 2025–19 Oct 2025
Average latency (ms) jp-tok-tok02-a jp-tok-tok04-a jp-tok-tok05-a
jp-tok-tok02-a 0.1 1.42 0.98
jp-tok-tok04-a 1.42 0.1 1.71
jp-tok-tok05-a 0.98 1.71 0.1
20 Sep 2025–19 Oct 2025
Average latency (ms) br-sao-sao01-a br-sao-sao04-a br-sao-sao05-a
br-sao-sao01-a 0.1 1.78 2.7
br-sao-sao04-a 1.78 0.08 1.97
br-sao-sao05-a 2.7 1.97 0.1

12 Oct 2025

Inter-region latency

13 Sep 2025–12 Oct 2025
Average latency (ms) Dallas Toronto Washington DC Frankfurt London Madrid Montreal Osaka Sydney Tokyo Sao Paulo
Dallas 34 31 123 112 119 42 149 185 143 143
Toronto 34 20 93 83 104 10 167 216 160 129
Washington DC 32 19 88 76 88 16 170 215 164 117
Frankfurt 122 93 87 13 29 89 231 248 224 195
London 112 82 76 13 27 79 243 260 235 184
Madrid 117 104 87 30 27 101 257 275 250 203
Montreal 42 11 16 89 79 102 175 223 168 125
Osaka 151 167 171 231 243 258 176 122 9 291
Sydney 185 212 214 248 260 275 222 122 115 327
Tokyo 143 159 165 224 235 249 169 9 115 283
Sao Paulo 143 128 116 194 186 203 125 290 327 284

Inter-AZ latency

13 Sep 2025–12 Oct 2025
Average latency (ms) us-south-dal10-a us-south-dal12-a us-south-dal13-a us-south-dal14-a
us-south-dal10-a 0.09 1.66 2.11 2.12
us-south-dal12-a 1.66 0.09 1.8 1.32
us-south-dal13-a 2.11 1.8 0.09 1.67
us-south-dal14-a 2.12 1.32 1.67 0.1
13 Sep 2025–12 Oct 2025
Average latency (ms) ca-tor-tor01-a ca-tor-tor04-a ca-tor-tor05-a
ca-tor-tor01-a 0.1 1.53 1.76
ca-tor-tor04-a 1.53 0.1 1.69
ca-tor-tor05-a 1.76 1.69 0.1
13 Sep 2025–12 Oct 2025
Average latency (ms) us-east-wdc04-a us-east-wdc06-a us-east-wdc07-a
us-east-wdc04-a 0.09 0.72 0.68
us-east-wdc06-a 0.72 0.1 0.29
us-east-wdc07-a 0.68 0.29 0.09
13 Sep 2025–12 Oct 2025
Average latency (ms) eu-de-fra02-a eu-de-fra04-a eu-de-fra05-a
eu-de-fra02-a 0.1 0.75 0.66
eu-de-fra04-a 0.75 0.11 0.46
eu-de-fra05-a 0.66 0.46 0.12
13 Sep 2025–12 Oct 2025
Average latency (ms) eu-gb-lon04-a eu-gb-lon05-a eu-gb-lon06-a
eu-gb-lon04-a 0.09 2.16 1.75
eu-gb-lon05-a 2.16 0.09 1.7
eu-gb-lon06-a 1.75 1.7 0.08
13 Sep 2025–12 Oct 2025
Average latency (ms) eu-es-mad02-a eu-es-mad04-a eu-es-mad05-a
eu-es-mad02-a 0.09 0.67 0.61
eu-es-mad04-a 0.67 0.12 0.8
eu-es-mad05-a 0.61 0.8 0.1
13 Sep 2025–12 Oct 2025
Average latency (ms) ca-mon-mon04-a ca-mon-mon04-b ca-mon-mon04-c
ca-mon-mon04-a 0.08 0.17 0.17
ca-mon-mon04-b 0.17 0.08 0.17
ca-mon-mon04-c 0.17 0.17 0.08
13 Sep 2025–12 Oct 2025
Average latency (ms) jp-osa-osa21-a jp-osa-osa22-a jp-osa-osa23-a
jp-osa-osa21-a 0.1 1.52 1.52
jp-osa-osa22-a 1.52 0.1 1.5
jp-osa-osa23-a 1.52 1.5 0.09
13 Sep 2025–12 Oct 2025
Average latency (ms) au-syd-syd01-a au-syd-syd04-a au-syd-syd05-a
au-syd-syd01-a 0.1 1.61 0.95
au-syd-syd04-a 1.61 0.09 1.75
au-syd-syd05-a 0.95 1.75 0.1
13 Sep 2025–12 Oct 2025
Average latency (ms) jp-tok-tok02-a jp-tok-tok04-a jp-tok-tok05-a
jp-tok-tok02-a 0.1 1.43 0.98
jp-tok-tok04-a 1.43 0.1 1.7
jp-tok-tok05-a 0.98 1.7 0.1
13 Sep 2025–12 Oct 2025
Average latency (ms) br-sao-sao01-a br-sao-sao04-a br-sao-sao05-a
br-sao-sao01-a 0.09 1.74 2.68
br-sao-sao04-a 1.74 0.08 1.96
br-sao-sao05-a 2.68 1.96 0.1

5 Oct 2025

Inter-region latency

6 Sep 2025–5 Oct 2025
Average latency (ms) Dallas Toronto Washington DC Frankfurt London Madrid Montreal Osaka Sydney Tokyo Sao Paulo
Dallas 34 31 122 112 118 42 150 186 143 144
Toronto 33 20 93 82 104 10 170 215 163 129
Washington DC 32 19 88 76 87 16 175 215 168 116
Frankfurt 122 92 88 13 29 89 232 248 224 195
London 112 82 76 13 27 79 243 260 235 184
Madrid 116 104 87 29 27 101 258 275 250 203
Montreal 42 11 16 89 79 101 177 223 171 126
Osaka 150 170 174 231 243 258 178 122 9 291
Sydney 184 211 214 249 260 274 221 122 115 327
Tokyo 143 163 167 224 235 249 172 9 116 284
Sao Paulo 142 130 117 194 186 203 125 290 327 282

Inter-AZ latency

6 Sep 2025–5 Oct 2025
Average latency (ms) us-south-dal10-a us-south-dal12-a us-south-dal13-a us-south-dal14-a
us-south-dal10-a 0.09 1.76 2.08 2.19
us-south-dal12-a 1.76 0.09 1.89 1.57
us-south-dal13-a 2.08 1.89 0.09 1.65
us-south-dal14-a 2.19 1.57 1.65 0.1
6 Sep 2025–5 Oct 2025
Average latency (ms) ca-tor-tor01-a ca-tor-tor04-a ca-tor-tor05-a
ca-tor-tor01-a 0.1 1.53 1.77
ca-tor-tor04-a 1.53 0.1 1.68
ca-tor-tor05-a 1.77 1.68 0.1
6 Sep 2025–5 Oct 2025
Average latency (ms) us-east-wdc04-a us-east-wdc06-a us-east-wdc07-a
us-east-wdc04-a 0.09 0.71 0.68
us-east-wdc06-a 0.71 0.1 0.38
us-east-wdc07-a 0.68 0.38 0.09
6 Sep 2025–5 Oct 2025
Average latency (ms) eu-de-fra02-a eu-de-fra04-a eu-de-fra05-a
eu-de-fra02-a 0.11 0.75 0.66
eu-de-fra04-a 0.75 0.12 0.46
eu-de-fra05-a 0.66 0.46 0.12
6 Sep 2025–5 Oct 2025
Average latency (ms) eu-gb-lon04-a eu-gb-lon05-a eu-gb-lon06-a
eu-gb-lon04-a 0.09 2.24 1.91
eu-gb-lon05-a 2.24 0.09 1.88
eu-gb-lon06-a 1.91 1.88 0.08
6 Sep 2025–5 Oct 2025
Average latency (ms) eu-es-mad02-a eu-es-mad04-a eu-es-mad05-a
eu-es-mad02-a 0.09 0.67 0.61
eu-es-mad04-a 0.67 0.12 0.8
eu-es-mad05-a 0.61 0.8 0.1
6 Sep 2025–5 Oct 2025
Average latency (ms) ca-mon-mon04-a ca-mon-mon04-b ca-mon-mon04-c
ca-mon-mon04-a 0.08 0.16 0.17
ca-mon-mon04-b 0.16 0.08 0.17
ca-mon-mon04-c 0.17 0.17 0.08
6 Sep 2025–5 Oct 2025
Average latency (ms) jp-osa-osa21-a jp-osa-osa22-a jp-osa-osa23-a
jp-osa-osa21-a 0.1 1.5 1.51
jp-osa-osa22-a 1.5 0.1 1.49
jp-osa-osa23-a 1.51 1.49 0.1
6 Sep 2025–5 Oct 2025
Average latency (ms) au-syd-syd01-a au-syd-syd04-a au-syd-syd05-a
au-syd-syd01-a 0.09 1.59 0.97
au-syd-syd04-a 1.59 0.08 1.75
au-syd-syd05-a 0.97 1.75 0.1
6 Sep 2025–5 Oct 2025
Average latency (ms) jp-tok-tok02-a jp-tok-tok04-a jp-tok-tok05-a
jp-tok-tok02-a 0.1 1.44 0.99
jp-tok-tok04-a 1.44 0.1 1.68
jp-tok-tok05-a 0.99 1.68 0.1
6 Sep 2025–5 Oct 2025
Average latency (ms) br-sao-sao01-a br-sao-sao04-a br-sao-sao05-a
br-sao-sao01-a 0.09 1.71 2.67
br-sao-sao04-a 1.71 0.08 1.96
br-sao-sao05-a 2.67 1.96 0.1

28 Sep 2025

Inter-region latency

30 Aug 2025–28 Sep 2025
Average latency (ms) Dallas Toronto Washington DC Frankfurt London Madrid Montreal Osaka Sydney Tokyo Sao Paulo
Dallas 34 31 122 112 117 42 150 186 143 144
Toronto 33 19 93 82 104 10 170 214 164 130
Washington DC 31 19 88 76 87 16 175 214 168 116
Frankfurt 122 92 88 13 29 89 232 249 224 195
London 112 82 76 13 27 79 243 260 235 184
Madrid 117 104 88 29 27 101 258 275 250 204
Montreal 42 11 16 89 79 102 178 224 171 125
Osaka 151 169 174 232 243 258 178 122 9 290
Sydney 184 211 213 249 261 275 220 122 116 325
Tokyo 142 164 168 224 235 249 172 9 115 284
Sao Paulo 142 131 117 194 186 202 124 290 327 282

Inter-AZ latency

30 Aug 2025–28 Sep 2025
Average latency (ms) us-south-dal10-a us-south-dal12-a us-south-dal13-a us-south-dal14-a
us-south-dal10-a 0.09 2.24 2.17 2.22
us-south-dal12-a 2.24 0.1 1.92 1.55
us-south-dal13-a 2.17 1.92 0.09 1.64
us-south-dal14-a 2.22 1.55 1.64 0.1
30 Aug 2025–28 Sep 2025
Average latency (ms) ca-tor-tor01-a ca-tor-tor04-a ca-tor-tor05-a
ca-tor-tor01-a 0.1 1.53 1.76
ca-tor-tor04-a 1.53 0.1 1.68
ca-tor-tor05-a 1.76 1.68 0.1
30 Aug 2025–28 Sep 2025
Average latency (ms) us-east-wdc04-a us-east-wdc06-a us-east-wdc07-a
us-east-wdc04-a 0.09 0.69 0.69
us-east-wdc06-a 0.69 0.09 0.47
us-east-wdc07-a 0.69 0.47 0.09
30 Aug 2025–28 Sep 2025
Average latency (ms) eu-de-fra02-a eu-de-fra04-a eu-de-fra05-a
eu-de-fra02-a 0.1 0.73 0.68
eu-de-fra04-a 0.73 0.12 0.49
eu-de-fra05-a 0.68 0.49 0.12
30 Aug 2025–28 Sep 2025
Average latency (ms) eu-gb-lon04-a eu-gb-lon05-a eu-gb-lon06-a
eu-gb-lon04-a 0.08 2.24 1.93
eu-gb-lon05-a 2.24 0.09 1.84
eu-gb-lon06-a 1.93 1.84 0.08
30 Aug 2025–28 Sep 2025
Average latency (ms) eu-es-mad02-a eu-es-mad04-a eu-es-mad05-a
eu-es-mad02-a 0.09 0.67 0.61
eu-es-mad04-a 0.67 0.12 0.8
eu-es-mad05-a 0.61 0.8 0.1
30 Aug 2025–28 Sep 2025
Average latency (ms) ca-mon-mon04-a ca-mon-mon04-b ca-mon-mon04-c
ca-mon-mon04-a 0.08 0.16 0.17
ca-mon-mon04-b 0.16 0.08 0.17
ca-mon-mon04-c 0.17 0.17 0.08
30 Aug 2025–28 Sep 2025
Average latency (ms) jp-osa-osa21-a jp-osa-osa22-a jp-osa-osa23-a
jp-osa-osa21-a 0.1 1.5 1.49
jp-osa-osa22-a 1.5 0.1 1.48
jp-osa-osa23-a 1.49 1.48 0.1
30 Aug 2025–28 Sep 2025
Average latency (ms) au-syd-syd01-a au-syd-syd04-a au-syd-syd05-a
au-syd-syd01-a 0.1 1.59 1.0
au-syd-syd04-a 1.59 0.08 1.8
au-syd-syd05-a 1.0 1.8 0.11
30 Aug 2025–28 Sep 2025
Average latency (ms) jp-tok-tok02-a jp-tok-tok04-a jp-tok-tok05-a
jp-tok-tok02-a 0.1 1.44 0.98
jp-tok-tok04-a 1.44 0.1 1.69
jp-tok-tok05-a 0.98 1.69 0.1
30 Aug 2025–28 Sep 2025
Average latency (ms) br-sao-sao01-a br-sao-sao04-a br-sao-sao05-a
br-sao-sao01-a 0.09 1.69 2.66
br-sao-sao04-a 1.69 0.08 1.95
br-sao-sao05-a 2.66 1.95 0.1

21 Sep 2025

Inter-region latency

23 Aug 2025–21 Sep 2025
Average latency (ms) Dallas Toronto Washington DC Frankfurt London Madrid Montreal Osaka Sydney Tokyo Sao Paulo
Dallas 34 31 122 112 116 42 150 187 143 143
Toronto 34 19 93 82 106 11 170 214 164 130
Washington DC 31 19 87 76 87 16 174 214 169 116
Frankfurt 122 92 87 13 29 89 232 249 224 196
London 112 83 76 13 27 79 244 261 236 185
Madrid 117 104 88 29 27 102 259 275 251 203
Montreal 43 11 16 89 79 101 179 225 172 125
Osaka 150 171 175 232 243 258 178 123 9 290
Sydney 183 211 214 251 261 275 221 123 116 325
Tokyo 142 165 167 225 236 250 172 9 116 283
Sao Paulo 142 130 117 196 186 202 125 290 327 283

Inter-AZ latency

23 Aug 2025–21 Sep 2025
Average latency (ms) us-south-dal10-a us-south-dal12-a us-south-dal13-a us-south-dal14-a
us-south-dal10-a 0.09 2.84 2.4 2.65
us-south-dal12-a 2.84 0.1 1.92 1.56
us-south-dal13-a 2.4 1.92 0.09 1.62
us-south-dal14-a 2.65 1.56 1.62 0.1
23 Aug 2025–21 Sep 2025
Average latency (ms) ca-tor-tor01-a ca-tor-tor04-a ca-tor-tor05-a
ca-tor-tor01-a 0.1 1.52 1.74
ca-tor-tor04-a 1.52 0.1 1.67
ca-tor-tor05-a 1.74 1.67 0.09
23 Aug 2025–21 Sep 2025
Average latency (ms) us-east-wdc04-a us-east-wdc06-a us-east-wdc07-a
us-east-wdc04-a 0.09 0.69 0.69
us-east-wdc06-a 0.69 0.09 0.56
us-east-wdc07-a 0.69 0.56 0.09
23 Aug 2025–21 Sep 2025
Average latency (ms) eu-de-fra02-a eu-de-fra04-a eu-de-fra05-a
eu-de-fra02-a 0.11 0.72 0.67
eu-de-fra04-a 0.72 0.12 0.53
eu-de-fra05-a 0.67 0.53 0.12
23 Aug 2025–21 Sep 2025
Average latency (ms) eu-gb-lon04-a eu-gb-lon05-a eu-gb-lon06-a
eu-gb-lon04-a 0.08 2.25 1.93
eu-gb-lon05-a 2.25 0.09 1.85
eu-gb-lon06-a 1.93 1.85 0.08
23 Aug 2025–21 Sep 2025
Average latency (ms) eu-es-mad02-a eu-es-mad04-a eu-es-mad05-a
eu-es-mad02-a 0.1 0.67 0.61
eu-es-mad04-a 0.67 0.12 0.79
eu-es-mad05-a 0.61 0.79 0.1
23 Aug 2025–21 Sep 2025
Average latency (ms) ca-mon-mon04-a ca-mon-mon04-b ca-mon-mon04-c
ca-mon-mon04-a 0.08 0.16 0.17
ca-mon-mon04-b 0.16 0.08 0.17
ca-mon-mon04-c 0.17 0.17 0.08
23 Aug 2025–21 Sep 2025
Average latency (ms) jp-osa-osa21-a jp-osa-osa22-a jp-osa-osa23-a
jp-osa-osa21-a 0.1 1.47 1.48
jp-osa-osa22-a 1.47 0.1 1.47
jp-osa-osa23-a 1.48 1.47 0.1
23 Aug 2025–21 Sep 2025
Average latency (ms) au-syd-syd01-a au-syd-syd04-a au-syd-syd05-a
au-syd-syd01-a 0.1 1.58 0.92
au-syd-syd04-a 1.58 0.08 1.81
au-syd-syd05-a 0.92 1.81 0.11
23 Aug 2025–21 Sep 2025
Average latency (ms) jp-tok-tok02-a jp-tok-tok04-a jp-tok-tok05-a
jp-tok-tok02-a 0.1 1.47 1.0
jp-tok-tok04-a 1.47 0.1 1.67
jp-tok-tok05-a 1.0 1.67 0.1
23 Aug 2025–21 Sep 2025
Average latency (ms) br-sao-sao01-a br-sao-sao04-a br-sao-sao05-a
br-sao-sao01-a 0.09 1.67 2.71
br-sao-sao04-a 1.67 0.08 1.94
br-sao-sao05-a 2.71 1.94 0.09