47 lines
2.6 KiB
Markdown
47 lines
2.6 KiB
Markdown
# Performance
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## Provision Time
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Provisioning times vary based on the platform. Sampling the time to create (apply) and destroy clusters with 1 controller and 2 workers shows (roughly) what to expect.
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| Platform | Apply | Destroy |
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|---------------|-------|---------|
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| AWS | 20 min | 8 min 10 sec |
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| Bare-Metal | 10-14 min | NA |
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| Digital Ocean | 3 min 30 sec | 20 sec |
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| Google Cloud | 6 min 10 sec | 4 min 30 sec |
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Notes:
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* AWS is alpha
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* DNS propagation times have a large impact on provision time
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* Platforms with auto-scaling take more time to provision (AWS, Google)
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* Bare-metal provision times vary depending on the time for machines to POST and network bandwidth to download images.
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## Network Performance
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Network performance varies based on the platform and CNI plugin. `iperf` was used to measture the bandwidth between different hosts and different pods. Host-to-host indicates the typical bandwidth offered by the provider. Pod-to-pod shows the bandwidth between two `iperf` containers. The difference provides some idea about the overhead.
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| Platform / Plugin | Theory | Host to Host | Pod to Pod |
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|----------------------------|-------:|-------------:|-------------:|
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| AWS (flannel) | ? | 976 MB/s | 900-999 MB/s |
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| AWS (calico, MTU 1480) | ? | 976 MB/s | 100-350 MB/s |
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| AWS (calico, MTU 8991) | ? | 976 MB/s | 900-999 MB/s |
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| Bare-Metal (flannel) | 1 GB/s | 934 MB/s | 903 MB/s |
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| Bare-Metal (calico) | 1 GB/s | 941 MB/s | 931 MB/s |
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| Bare-Metal (flannel, bond) | 3 GB/s | 2.3 GB/s | 1.17 GB/s |
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| Bare-Metal (calico, bond) | 3 GB/s | 2.3 GB/s | 1.17 GB/s |
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| Digital Ocean | ? | 938 MB/s | 820-880 MB/s |
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| Google Cloud (flannel) | ? | 1.94 GB/s | 1.76 GB/s |
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| Google Cloud (calico) | ? | 1.94 GB/s | 1.81 GB/s |
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Notes:
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* AWS is alpha
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* AWS instances are located in the same region. Google instances are located in the same zone (helps bandwidth at the expense of fault tolerance).
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* Network bandwidth fluctuates on AWS and Digital Ocean.
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* Only [certain AWS EC2 instance types](http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/network_mtu.html#jumbo_frame_instances) allow jumbo frames. This is why the default MTU on AWS must be 1480.
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* Between Flannel and Calico, performance differences are usually minimal. Platform and configuration differenes dominate.
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* Pods do not seem to be able to leverage the hosts' bonded NIC setup. Possibly a testing artifact.
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* Observing the same bonded NIC pod-to-pod limit suggests the bottleneck lies below flannel and calico.
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