[Rd] Duplicated mirrors on available packages
Colin Gillespie
c@g|||e@p|e @end|ng |rom gm@||@com
Fri Sep 9 19:33:09 CEST 2022
Hi
When there are duplicated repos, available.packages() takes
significantly longer to run.
For example
mirror = "https://cloud.r-project.org/"
system.time(available.packages(repos = mirror))
# user system elapsed
# 1.054 0.031 1.245
system.time(available.packages(repos = c(mirror, mirror)))
# user system elapsed
# 22.389 0.037 22.429
Best wishes,
Colin
> sessionInfo()
R version 4.2.0 (2022-04-22)
Platform: x86_64-pc-linux-gnu (64-bit)
Running under: Ubuntu 22.04.1 LTS
Matrix products: default
BLAS: /usr/lib/x86_64-linux-gnu/openblas-pthread/libblas.so.3
LAPACK: /usr/lib/x86_64-linux-gnu/openblas-pthread/libopenblasp-r0.3.20.so
locale:
[1] LC_CTYPE=en_GB.UTF-8 LC_NUMERIC=C
[3] LC_TIME=en_GB.UTF-8 LC_COLLATE=en_GB.UTF-8
[5] LC_MONETARY=en_GB.UTF-8 LC_MESSAGES=en_GB.UTF-8
[7] LC_PAPER=en_GB.UTF-8 LC_NAME=C
[9] LC_ADDRESS=C LC_TELEPHONE=C
[11] LC_MEASUREMENT=en_GB.UTF-8 LC_IDENTIFICATION=C
attached base packages:
[1] stats graphics grDevices utils datasets methods base
loaded via a namespace (and not attached):
[1] compiler_4.2.0 tools_4.2.0
Dr Colin Gillespie
https://twitter.com/csgillespie
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