microbenchmark: Accurate Timing Functions
ベンチマークテスト
> library(microbenchmark)
バージョン: 1.4.2.1
関数名 | 概略 |
---|---|
autoplot.microbenchmark |
Autoplot method for microbenchmark objects: Prettier graphs for microbenchmark using ggplot2 |
boxplot.microbenchmark |
Boxplot of 'microbenchmark' timings. |
coalesce |
Return first non null argument. |
convert_to_unit |
Convert timings to different units. |
find_prefix |
Find SI prefix for unit |
get_nanotime |
Return the current value of the platform timer. |
microbenchmark |
Sub-millisecond accurate timing of expression evaluation. |
microtiming_precision |
Estimate precision of timing routines. |
print.microbenchmark |
Print 'microbenchmark' timings. |
summary.microbenchmark |
Summarize 'microbenchmark' timings. |
autoplot
ベンチマークテストの結果を図示
ref) boxplot()
> x <- runif(100)
> microbenchmark(
+ sqrt(x),
+ x ^ 0.5,
+ times = 200,
+ unit = "us"
+ ) %>% autoplot()
boxplot
ベンチマークテストの結果を図示
> x <- runif(100)
> microbenchmark(
+ sqrt(x),
+ x ^ 0.5,
+ times = 200,
+ unit = "us"
+ ) %>% boxplot()
convert_to_unit
ns, us, ms, s, t, hz, eps, khz, mhz, f
> microbenchmark(
+ mean(c(1, 3, 10, 8)),
+ unit = "us") %>% {
+ microbenchmark:::convert_to_unit(., unit = "ns")
+ }
microbenchmark
ベンチマークテストを実施する
Arguments
- ... ベンチマークを測る処理。複数あるを比較する場合はカンマを使って区切る
- list
- times... 繰り返しの数。初期値で100回
- unit
- check
- control
> x <- runif(100)
> microbenchmark(
+ sqrt(x),
+ x ^ 0.5,
+ times = 200,
+ unit = "us"
+ )
Unit: microseconds
expr min lq mean median uq max neval cld
sqrt(x) 0.69 0.772 1.631205 0.8245 1.7460 62.829 200 a
x^0.5 3.14 3.271 3.829265 3.3595 4.2625 10.908 200 b