### size of csv file: 689.4MB (7,009,728 rows * 29 columns) ### system.time(read.csv('../data/2008.csv', header = T)) # user system elapsed # 88.301 2.416 90.716 library(data.table) system.time(fread('../data/2008.csv', header = T, sep = ',')) # user system elapsed # 4.740 0.048 4.785 library(bigmemory) system.time(read.big.matrix('../data/2008.csv', header = T)) # user system elapsed # 59.544 0.764 60.308 library(ff) system.time(read.csv.ffdf(file = '../data/2008.csv', header = T)) # user system elapsed # 60.028 1.280 61.335 library(sqldf) system.time(read.csv.sql('../data/2008.csv')) # user system elapsed # 87.461 3.880 91.447