On 2026-02-20 07:47, Jon Turney via Cygwin-apps wrote:
Add a simple speed estimation for mirror list sites.
Use it when no previous (from settings) or explicit (via --site options)
site selection is made, to give a speed-sorted site selection dialog.
In that case, in unattended mode, also automatically select the 'fastest'
mirror site.
Jon Turney (3):
Rename site_list -> selected_site_list for clarity
Drop maintaining SiteList in order
Add speed estimation for mirror list sites
Makefile.am | 2 +
SiteSetting.cc | 30 +++-----
SiteSetting.h | 16 ++---
SiteSpeedEstimator.cc | 158 ++++++++++++++++++++++++++++++++++++++++++
SiteSpeedEstimator.h | 44 ++++++++++++
gui/SitePage.cc | 60 ++++++++++++----
ini.cc | 4 +-
nio-ie5.cc | 2 +-
8 files changed, 270 insertions(+), 46 deletions(-)
create mode 100644 SiteSpeedEstimator.cc
create mode 100644 SiteSpeedEstimator.h
For ping and mirror test scripts, I use a timeout of 100ms, as otherwise it
takes *minutes* to go thru all "close" North American mirrors in Canada/US:
200ms is enough to reach mirrors on the ~opposite side of the globe;
55S 115E would be Southern Ocean S of AU and W of NZ, so used those sites as
proxies for worst case network route timing!
Buffer of 100KB is barely larger than default 64KB, so could just allocate that
size buffer, fill it, and time it in a single operation.
But on GB/s home broadband that only takes 95us, so setup overhead might
dominate, maybe should bump the buffer and sample by an order of magnitude to
1MB to get close to 1ms time.
YMMV massively! ;^>
--
Take care. Thanks, Brian Inglis Calgary, Alberta, Canada
La perfection est atteinte Perfection is achieved
non pas lorsqu'il n'y a plus rien à ajouter not when there is no more to add
mais lorsqu'il n'y a plus rien à retrancher but when there is no more to cut
-- Antoine de Saint-Exupéry
