Plow is an HTTP(S) benchmarking tool, written in Golang. It uses excellent fasthttp instead of Go’s default net/http due to its lightning fast performance.
Plow runs at a specified connections(option -c) concurrently and real-time records a summary statistics, histogram of execution time and calculates percentiles to display on Web UI and terminal. It can run for a set duration( option -d), for a fixed number of requests(option -n), or until Ctrl-C interrupted.
The implementation of real-time computing Histograms and Quantiles using stream-based algorithms inspired by prometheus with low memory and CPU bounds. so it’s almost no additional performance overhead for benchmarking.
❯ ./plow http://127.0.0.1:8080/hello -c 20
Benchmarking http://127.0.0.1:8080/hello using 20 connection(s).
@ Real-time charts is listening on http://[::]:18888
Summary:
Elapsed 8.6s
Count 969657
2xx 776392
4xx 193265
RPS 112741.713
Reads 10.192MB/s
Writes 6.774MB/s
Statistics Min Mean StdDev Max
Latency 32µs 176µs 37µs 1.839ms
RPS 108558.4 112818.12 2456.63 115949.98
Latency Percentile:
P50 P75 P90 P95 P99 P99.9 P99.99
173µs 198µs 222µs 238µs 274µs 352µs 498µs
Latency Histogram:
141µs 273028 ■■■■■■■■■■■■■■■■■■■■■■■■
177µs 458955 ■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■
209µs 204717 ■■■■■■■■■■■■■■■■■■
235µs 26146 ■■
269µs 6029 ■
320µs 721
403µs 58
524µs 3