Before the refactor we used python urllib directly - now we use python requests library instead - primarily because it is simpler to use - better error handling by the library.
With the next version - I have refactored the checks and split FTP and HTTP - but I can’t say - my tests shows no significant changes with the rankings.
But as with all activity there is a lot of factors - the computer running pacman-mirrors - the network - routing etc.
If you are on stable branch - you could try installing the new version directly - let me know your findings … - other branches can just run a sync
sudo pacman -U https://manjaro.moson.eu/pool/overlay/pacman-mirrors-4.21.0-1-any.pkg.tar.zst
Sample output from a run 2021-04-05T17:26:00Z located in Aarhus, Denmark
➜ ~ pacman-mirrors
Pacman-mirrors version 4.21.0
Local mirror status for unstable branch
Mirror #1 OK 00:08 Denmark https://www.uex.dk/public/manjaro/
➜ ~ sudo pacman-mirrors -c all -i -fc
::INFO Downloading mirrors from Manjaro
::INFO => Mirror pool: https://repo.manjaro.org/mirrors.json
::INFO => Mirror status: http://repo.manjaro.org/status.json
::INFO Using default mirror file
::INFO Querying mirrors - This may take some time
1.197 Austria : http://mirror.easyname.at/manjaro/
0.443 Austria : ftp://mirror.easyname.at/manjaro/
1.126 Belgium : https://mirror.futureweb.be/manjaro/
1.104 Belgium : http://mirror.futureweb.be/manjaro/
3.661 Brazil : https://www.caco.ic.unicamp.br/manjaro/
1.393 Bulgaria : https://manjaro.ipacct.com/manjaro/
..... Bulgaria : http://manjaro.telecoms.bg/
2.168 Canada : https://osmirror.org/manjaro/
..... Chile : http://manjaro.dcc.uchile.cl/
3.243 Chile : https://mirror.ufro.cl/manjaro/
3.844 Chile : https://mirror1.cl.netactuate.com/manjaro/
..... Chile : http://mirror1.cl.netactuate.com/manjaro/
..... Chile : ftp://mirror1.cl.netactuate.com/manjaro/
1.018 Denmark : https://www.uex.dk/public/manjaro/
1.148 Germany : https://mirror.alpix.eu/manjaro/
1.151 Germany : https://manjaro.re/
1.104 Germany : http://manjaro.re/
1.176 Germany : https://ftp.gwdg.de/pub/linux/manjaro/
1.117 Germany : http://ftp.gwdg.de/pub/linux/manjaro/
1.189 Germany : ftp://ftp.gwdg.de/pub/linux/manjaro/
1.180 Germany : https://manjaro.moson.eu/
1.116 Germany : http://manjaro.moson.eu/
1.180 Germany : https://manjaro.moson.org/
1.114 Germany : http://manjaro.moson.org/
1.435 Hungary : https://quantum-mirror.hu/mirrors/pub/manjaro/
1.241 Hungary : http://quantum-mirror.hu/mirrors/pub/manjaro/
..... Japan : http://ftp.tsukuba.wide.ad.jp/Linux/manjaro/
1.155 Netherlands : https://mirror.easylee.nl/manjaro/
1.085 Netherlands : http://mirror.easylee.nl/manjaro/
1.146 Netherlands : https://manjaro.mirrors.lavatech.top/
1.090 Netherlands : http://manjaro.mirrors.lavatech.top/
1.282 Netherlands : https://ftp.nluug.nl/pub/os/Linux/distr/manjaro/
0.333 Netherlands : ftp://ftp.nluug.nl/pub/os/Linux/distr/manjaro/
1.146 Netherlands : https://mirror.koddos.net/manjaro/
..... New_Zealand : http://manjaro.mirrors.theom.nz/
1.155 Norway : http://mirror.terrahost.no/linux/manjaro/
1.440 Poland : https://mirror.tuchola-dc.pl/manjaro/
0.122 Sweden : https://ftp.lysator.liu.se/pub/manjaro/
0.150 Sweden : ftp://ftp.lysator.liu.se/pub/manjaro/
1.265 Ukraine : http://mirrors.colocall.net/manjaro/
..... Ukraine : ftp://mirrors.colocall.net/manjaro/
::ERROR ftp error: error_perm('550 Failed to change directory.')
0.221
1.175 United_Kingdom : http://manjaro.mirrors.uk2.net/
1.700 United_States : https://mirror.math.princeton.edu/pub/manjaro/
1.856 United_States : https://mirror.dacentec.com/manjaro/
2.023 United_States : https://mirrors.gigenet.com/manjaro/
1.558 United_States : http://mirrors.gigenet.com/manjaro/
::INFO User generated mirror list
::------------------------------------------------------------
::INFO Custom mirror file saved: /var/lib/pacman-mirrors/custom-mirrors.json
::INFO Writing mirror list
::Denmark : https://www.uex.dk/public/manjaro/unstable/$repo/$arch
::INFO Mirror list generated and saved to: /etc/pacman.d/mirrorlist
And a second run on my workstation (using time to measure runtime)
Result of sudo pacman-mirrors -c all -i -fc 27,66s user 0,31s system 35% cpu 1:19,05 total
➜ ~ time sudo pacman-mirrors -c all -i -fc
::INFO Downloading mirrors from Manjaro
::INFO => Mirror pool: https://repo.manjaro.org/mirrors.json
::INFO => Mirror status: http://repo.manjaro.org/status.json
::INFO Using default mirror file
::INFO Querying mirrors - This may take some time
1.948 Australia : https://manjaro.lucassymons.net/
0.902 Austria : http://mirror.easyname.at/manjaro/
0.351 Austria : ftp://mirror.easyname.at/manjaro/
0.888 Belgium : https://mirror.futureweb.be/manjaro/
0.812 Belgium : http://mirror.futureweb.be/manjaro/
2.368 Brazil : https://manjaro.c3sl.ufpr.br/
1.682 Brazil : https://www.caco.ic.unicamp.br/manjaro/
1.152 Bulgaria : https://manjaro.ipacct.com/manjaro/
1.083 Bulgaria : http://manjaro.telecoms.bg/
1.582 Canada : https://osmirror.org/manjaro/
..... Chile : http://manjaro.dcc.uchile.cl/
3.086 Chile : https://mirror.ufro.cl/manjaro/
..... Chile : https://mirror1.cl.netactuate.com/manjaro/
..... Chile : http://mirror1.cl.netactuate.com/manjaro/
::ERROR Connection: HTTPConnectionPool(host='mirror1.cl.netactuate.com', port=80): Read timed out. (read timeout=2)
..... Chile : ftp://mirror1.cl.netactuate.com/manjaro/
0.674 Denmark : https://www.uex.dk/public/manjaro/
0.891 Germany : https://mirror.alpix.eu/manjaro/
0.857 Germany : https://manjaro.re/
0.785 Germany : http://manjaro.re/
0.941 Germany : https://ftp.gwdg.de/pub/linux/manjaro/
0.848 Germany : http://ftp.gwdg.de/pub/linux/manjaro/
0.593 Germany : ftp://ftp.gwdg.de/pub/linux/manjaro/
0.927 Germany : https://manjaro.moson.eu/
0.836 Germany : http://manjaro.moson.eu/
0.922 Germany : https://manjaro.moson.org/
0.856 Germany : http://manjaro.moson.org/
1.083 Hungary : https://quantum-mirror.hu/mirrors/pub/manjaro/
0.972 Hungary : http://quantum-mirror.hu/mirrors/pub/manjaro/
..... Japan : http://ftp.tsukuba.wide.ad.jp/Linux/manjaro/
0.870 Netherlands : https://mirror.easylee.nl/manjaro/
0.806 Netherlands : http://mirror.easylee.nl/manjaro/
0.982 Netherlands : https://manjaro.mirrors.lavatech.top/
0.803 Netherlands : http://manjaro.mirrors.lavatech.top/
1.246 Netherlands : https://ftp.nluug.nl/pub/os/Linux/distr/manjaro/
0.357 Netherlands : ftp://ftp.nluug.nl/pub/os/Linux/distr/manjaro/
0.881 Netherlands : https://mirror.koddos.net/manjaro/
..... New_Zealand : http://manjaro.mirrors.theom.nz/
0.911 Norway : http://mirror.terrahost.no/linux/manjaro/
1.938 Poland : https://mirror.tuchola-dc.pl/manjaro/
0.155 Sweden : https://ftp.lysator.liu.se/pub/manjaro/
0.153 Sweden : ftp://ftp.lysator.liu.se/pub/manjaro/
1.015 Ukraine : http://mirrors.colocall.net/manjaro/
..... Ukraine : ftp://mirrors.colocall.net/manjaro/
::ERROR ftp error: error_perm('550 Failed to change directory.')
0.220
..... United_Kingdom : http://manjaro.mirrors.uk2.net/
1.470 United_States : https://mirror.math.princeton.edu/pub/manjaro/
1.609 United_States : https://mirror.dacentec.com/manjaro/
1.779 United_States : https://mirrors.gigenet.com/manjaro/
1.239 United_States : http://mirrors.gigenet.com/manjaro/
::INFO User generated mirror list
::------------------------------------------------------------
::INFO Custom mirror file saved: /var/lib/pacman-mirrors/custom-mirrors.json
::INFO Writing mirror list
::Denmark : https://www.uex.dk/public/manjaro/unstable/$repo/$arch
::INFO Mirror list generated and saved to: /etc/pacman.d/mirrorlist
sudo pacman-mirrors -c all -i -fc 27,66s user 0,31s system 35% cpu 1:19,05 total