etcd-io__etcd/Documentation/benchmarks/etcd-2-1-0-alpha-benchmarks.md

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title: Benchmarking etcd v2.1.0

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 2.1.0 alpha

etcd Cluster

3 etcd members, each runs on a single machine

Testing

Bootstrap another machine and use the hey HTTP benchmark tool to send requests to each etcd member. Check the benchmark hacking guide for detailed instructions.

Performance

reading one single key

key size in bytes	number of clients	target etcd server	read QPS	90th Percentile Latency (ms)
64	1	leader only	1534	0.7
64	64	leader only	10125	9.1
64	256	leader only	13892	27.1
256	1	leader only	1530	0.8
256	64	leader only	10106	10.1
256	256	leader only	14667	27.0
64	64	all servers	24200	3.9
64	256	all servers	33300	11.8
256	64	all servers	24800	3.9
256	256	all servers	33000	11.5

writing one single key

key size in bytes	number of clients	target etcd server	write QPS	90th Percentile Latency (ms)
64	1	leader only	60	21.4
64	64	leader only	1742	46.8
64	256	leader only	3982	90.5
256	1	leader only	58	20.3
256	64	leader only	1770	47.8
256	256	leader only	4157	105.3
64	64	all servers	1028	123.4
64	256	all servers	3260	123.8
256	64	all servers	1033	121.5
256	256	all servers	3061	119.3