Red Hat SummitChapter 18. Additional information
18.1. MTV performance addendum
The data provided here was collected from testing in Red Hat Labs and is provided for reference only.
Overall, these numbers should be considered to show the best-case scenarios.
The observed performance of migration can differ from these results and depends on several factors.
18.1.1. ESXi performance
Single ESXi performance
Test migration using the same ESXi host.
In each iteration, the total VMs are increased, to display the impact of concurrent migration on the duration.
The results show that migration time is linear when increasing the total VMs (50 GiB disk, Utilization 70%).
The optimal number of VMs per ESXi is 10.
| Test Case Description | MTV | VDDK | max_vm inflight | Migration Type | Total Duration |
|---|---|---|---|---|---|
| cold migration, 10 VMs, Single ESXi, Private Network [a] | 2.6 | 7.0.3 | 100 | cold | 0:21:39 |
| cold migration, 20 VMs, Single ESXi, Private Network | 2.6 | 7.0.3 | 100 | cold | 0:41:16 |
| cold migration, 30 VMs, Single ESXi, Private Network | 2.6 | 7.0.3 | 100 | cold | 1:00:59 |
| cold migration, 40 VMs, Single ESXi, Private Network | 2.6 | 7.0.3 | 100 | cold | 1:23:02 |
| cold migration, 50 VMs, Single ESXi, Private Network | 2.6 | 7.0.3 | 100 | cold | 1:46:24 |
| cold migration, 80 VMs, Single ESXi, Private Network | 2.6 | 7.0.3 | 100 | cold | 2:42:49 |
| cold migration, 100 VMs, Single ESXi, Private Network | 2.6 | 7.0.3 | 100 | cold | 3:25:15 |
[a]
Private Network refers to a non -Management network
| |||||
Multi ESXi hosts and single data store
In each iteration, the number of ESXi hosts were increased, to show that increasing the number of ESXi hosts improves the migration time (50 GiB disk, Utilization 70%).
| Test Case Description | MTV | VDDK | Max_vm inflight | Migration Type | Total Duration |
|---|---|---|---|---|---|
| cold migration, 100 VMs, Single ESXi, Private Network [a] | 2.6 | 7.0.3 | 100 | cold | 3:25:15 |
| cold migration, 100 VMs, 4 ESXs (25 VMs per ESX), Private Network | 2.6 | 7.0.3 | 100 | cold | 1:22:27 |
| cold migration, 100 VMs, 5 ESXs (20 VMs per ESX), Private Network, 1 DataStore | 2.6 | 7.0.3 | 100 | cold | 1:04:57 |
[a]
Private Network refers to a non-Management network
| |||||
18.1.2. Different migration network performance
Each iteration the Migration Network was changed, using the Provider, to find the fastest network for migration.
The results show that there is no degradation using management compared to non-managment networks when all interfaces and network speeds are the same.
| Test Case Description | MTV | VDDK | max_vm inflight | Migration Type | Total Duration |
|---|---|---|---|---|---|
| cold migration, 10 VMs, Single ESXi, MGMT Network | 2.6 | 7.0.3 | 100 | cold | 0:21:30 |
| cold migration, 10 VMs, Single ESXi, Private Network [a] | 2.6 | 7.0.3 | 20 | cold | 0:21:20 |
| cold migration, 10 VMs, Single ESXi, Default Network | 2.6.2 | 7.0.3 | 20 | cold | 0:21:30 |
[a]
Private Network refers to a non-Management network
| |||||
