consul/bench/results.md

Consul Benchmark Results

As part of a benchmark, we started a 5 node DigitalOcean cluster to do. There are 3 servers, meaning writes must commit to at least 2 servers. The cluster uses the 16GB DigitalOcean droplet which has the following specs:

• 8 CPU Cores, 2Ghz
• 16GB RAM
• 160GB SSD disk
• 1Gbps NIC

We used bonnie++ to benchmark the disk, and the key metrics are:

• 188MB/s sequential write
• 86MB/s sequential read-write-flush
• 2636 random seeks per second

Output

Below is the output for a test run on a benchmark cluster. We ran the benchmark several times to warm up the nodes, and this is just a single representative sample.

Note, that a single worker was running the benchmark. This means the "stale" test is not representative of total throughput, as the client was only routing to a single server.

===== PUT test =====
GOMAXPROCS=4 boom -m PUT -d "74a31e96-1d0f-4fa7-aa14-7212a326986e" -n 20480 -c 64 http://localhost:8500/v1/kv/bench
20480 / 20480 Booooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooo! 100.00 %

Summary:
  Total:	19.4302 secs.
  Slowest:	0.1715 secs.
  Fastest:	0.0157 secs.
  Average:	0.0606 secs.
  Requests/sec:	1054.0313
  Total Data Received:	102400 bytes.
  Response Size per Request:	5 bytes.

Status code distribution:
  [200]	20480 responses

Response time histogram:
  0.016 [1]	|
  0.031 [233]	|∎
  0.047 [4120]	|∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎
  0.062 [8079]	|∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎
  0.078 [5082]	|∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎
  0.094 [2045]	|∎∎∎∎∎∎∎∎∎∎
  0.109 [656]	|∎∎∎
  0.125 [200]	|
  0.140 [12]	|
  0.156 [31]	|
  0.172 [21]	|

Latency distribution:
  10% in 0.0416 secs.
  25% in 0.0484 secs.
  50% in 0.0579 secs.
  75% in 0.0697 secs.
  90% in 0.0835 secs.
  95% in 0.0919 secs.
  99% in 0.1113 secs.

===== GET default test =====
GOMAXPROCS=4 boom -n 20480 -c 64 http://localhost:8500/v1/kv/bench
20480 / 20480 Booooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooo! 100.00 %

Summary:
  Total:	9.6804 secs.
  Slowest:	0.0830 secs.
  Fastest:	0.0023 secs.
  Average:	0.0302 secs.
  Requests/sec:	2115.6096
  Total Data Received:	2560000 bytes.
  Response Size per Request:	125 bytes.

Status code distribution:
  [200]	20480 responses

Response time histogram:
  0.002 [1]	|
  0.010 [143]	|
  0.018 [1666]	|∎∎∎∎∎∎∎∎∎
  0.026 [6009]	|∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎
  0.035 [6732]	|∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎
  0.043 [3857]	|∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎
  0.051 [1389]	|∎∎∎∎∎∎∎∎
  0.059 [459]	|∎∎
  0.067 [154]	|
  0.075 [53]	|
  0.083 [17]	|

Latency distribution:
  10% in 0.0189 secs.
  25% in 0.0233 secs.
  50% in 0.0291 secs.
  75% in 0.0358 secs.
  90% in 0.0427 secs.
  95% in 0.0476 secs.
  99% in 0.0597 secs.

===== GET stale test =====
GOMAXPROCS=4 boom -n 20480 -c 64 http://localhost:8500/v1/kv/bench?stale
20480 / 20480 Booooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooo! 100.00 %

Summary:
  Total:	10.3082 secs.
  Slowest:	0.0972 secs.
  Fastest:	0.0015 secs.
  Average:	0.0322 secs.
  Requests/sec:	1986.7714
  Total Data Received:	2560000 bytes.
  Response Size per Request:	125 bytes.

Status code distribution:
  [200]	20480 responses

Response time histogram:
  0.002 [1]	|
  0.011 [320]	|∎
  0.021 [2558]	|∎∎∎∎∎∎∎∎∎∎∎∎∎∎
  0.030 [6247]	|∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎
  0.040 [6895]	|∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎
  0.049 [3174]	|∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎
  0.059 [971]	|∎∎∎∎∎
  0.068 [249]	|∎
  0.078 [52]	|
  0.088 [11]	|
  0.097 [2]	|

Latency distribution:
  10% in 0.0187 secs.
  25% in 0.0246 secs.
  50% in 0.0317 secs.
  75% in 0.0387 secs.
  90% in 0.0461 secs.
  95% in 0.0511 secs.
  99% in 0.0618 secs.

===== GET consistent test =====
GOMAXPROCS=4 boom -n 20480 -c 64 http://localhost:8500/v1/kv/bench?consistent
20480 / 20480 Booooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooo! 100.00 %

Summary:
  Total:	10.4835 secs.
  Slowest:	0.0991 secs.
  Fastest:	0.0024 secs.
  Average:	0.0327 secs.
  Requests/sec:	1953.5549
  Total Data Received:	2560000 bytes.
  Response Size per Request:	125 bytes.

Status code distribution:
  [200]	20480 responses

Response time histogram:
  0.002 [1]	|
  0.012 [137]	|
  0.022 [2405]	|∎∎∎∎∎∎∎∎∎∎∎∎
  0.031 [7754]	|∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎
  0.041 [6382]	|∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎
  0.051 [2629]	|∎∎∎∎∎∎∎∎∎∎∎∎∎
  0.060 [826]	|∎∎∎∎
  0.070 [245]	|∎
  0.080 [81]	|
  0.089 [17]	|
  0.099 [3]	|

Latency distribution:
  10% in 0.0208 secs.
  25% in 0.0254 secs.
  50% in 0.0314 secs.
  75% in 0.0384 secs.
  90% in 0.0463 secs.
  95% in 0.0518 secs.
  99% in 0.0645 secs.