--- title: Benchmarking etcd v2.1.0 weight: 5875 description: Performance measures for 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][hey] to send requests to each etcd member. Check the [benchmark hacking guide][hack-benchmark] 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 | [hack-benchmark]: https://github.com/etcd-io/etcd/tree/master/hack/benchmark [hey]: https://github.com/rakyll/hey