etcd-3-demo-benchmarks.md

title
Benchmarking etcd v3

Physical machines

GCE n1-highcpu-2 machine type

• 1x dedicated local SSD mounted under /var/lib/etcd
• 1x dedicated slow disk for the OS
• 1.8 GB memory
• 2x CPUs
• etcd version 2.2.0

etcd Cluster

1 etcd member running in v3 demo mode

Testing

Use etcd v3 benchmark tool.

Performance

reading one single key

key size in bytes	number of clients	read QPS	90th Percentile Latency (ms)
256	1	2716	0.4
256	64	16623	6.1
256	256	16622	21.7

The performance is nearly the same as the one with empty server handler.

reading one single key after putting

key size in bytes	number of clients	read QPS	90th Percentile Latency (ms)
256	1	2269	0.5
256	64	13582	8.6
256	256	13262	47.5

The performance with empty server handler is not affected by one put. So the performance downgrade should be caused by storage package.