plot of an empirical cumulative distribution function (was Percentile plot)

Question

How can I generate a plot like the following in R.

It shows the perce

Answer 1

y <- c(rnorm(8000, 300, 10), rnorm(400, 500, 300) )

t2 <- quantile(y, probs = seq(0, 99.99, by=.1)/100)

plot(t2, xlab="promille ", ylab="time (ms)",pch=20)

gives me:

whit my dataset