Limited Internet speeds caused by inappropriate socket buffering in function fdsock (winsup/net.cc)
Sat Jan 14 15:17:00 GMT 2017
On Jan 11 16:38, Daniel Havey wrote:
> Hi Corinna,
> I can see your email on the archive, but, I never received it in my
> gmail account (not even in a spam folder). I think the Internet ate
> your message.
No, I only sent the reply to the list. It's customary in the Cygwin
mailing lists not to CC the original poster, unless the poster requests
it. I CCed you now, of course.
> Yes Windows :). I'm the Program Manager for Windows 10 transports and
> IP. Anything in layers 4 or 3.
Cool. I'm glad for any input from "upstream" :)
> We can help you with network stack in
> the current release of Windows 10. Downlevel is more difficult. I'm
> not sure about the answer to your question on the size of wmem. I
> don't think that there is a static value that will work in all cases
> since Windows TCP will send 1 BDP worth of data per RTT. If the BDP
> is large then the static value could easily be too small and if the
> BDP is small then the static value could easily be too large. It will
> take some digging to figure out what the best practice is. I will do
> some digging and let you know the results.
I'm really looking forward to it!
> In the mean time I will apply your recommendations to my patch and repost it.
Same here. Thanks a lot for fixing another of those pesky "Cygwin is
slow" problems :)))
Corinna Vinschen Please, send mails regarding Cygwin to
Cygwin Maintainer cygwin AT cygwin DOT com
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