Created
September 12, 2024 21:52
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cran bioconductor mirror speed test
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| options(timeout = 10) | |
| cranometer <- function(ms = getCRANmirrors(all = FALSE, local.only = FALSE),...){ | |
| dest = tempfile() | |
| nms = dim(ms)[1] | |
| ms$t = rep(NA,nms) | |
| for(i in 1:nms){ | |
| m = ms[i,] | |
| url = paste(m$URL,"src/base/NEWS",sep="") | |
| t = try(system.time(download.file(url,dest),gcFirst=TRUE)) | |
| if(file.exists(dest) && file.info(dest)$size > 0){ | |
| ms$t[i] = t['elapsed'] | |
| }else{ | |
| ms$t[i] = NA | |
| } | |
| if(file.exists(dest)){ | |
| file.remove(dest) | |
| } | |
| } | |
| ms$t <- as.numeric(ms$t) | |
| ms <- na.omit(ms) | |
| return(ms) | |
| } | |
| # this can take some time | |
| x <- cranometer() | |
| time_order <- order(x$t) | |
| # a quick overview of the fastest mirrors | |
| head(x[time_order,c(1:4, 9)], 20) | |
| bioconductor_mirror_test <- function(ms = read.csv("https://bioconductor.org/BioC_mirrors.csv"), ...) { | |
| dest = tempfile() | |
| nms = nrow(ms) | |
| ms$t = rep(NA, nms) | |
| for (i in 1:nms) { | |
| m = ms[i, ] | |
| url = paste(m$URL, "packages/release/bioc/index.html", sep = "") | |
| t = try(system.time(download.file(url, dest), gcFirst = TRUE)) | |
| if (file.exists(dest) && file.info(dest)$size > 0) { | |
| ms$t[i] = t['elapsed'] | |
| } else { | |
| ms$t[i] = NA | |
| } | |
| if (file.exists(dest)) { | |
| file.remove(dest) | |
| } | |
| } | |
| ms$t <- as.numeric(ms$t) | |
| ms <- na.omit(ms) | |
| return(ms) | |
| } | |
| results <- bioconductor_mirror_test() | |
| time_order <- order(results$t) | |
| # a quick overview of the fastest mirrors | |
| head(results[time_order,c(1:4, 9)], 20) | |
| #chooseCRANmirror() | |
| #chooseBioCmirror() |
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