Lev Bishop, le Thu 07 Jun 2007 14:39:17 -0400, a écrit : > On 6/7/07, Samuel Thibault wrote: > >Lev Bishop, le Thu 07 Jun 2007 13:41:44 -0400, a écrit : > >> ...around 80MByte/sec, which maybe isn't as fast as it could be using > >> native functionality, but surely brltty doesn't need *that* much > >> bandwidth for transferring text? > > > >It doesn't need bandwidth, it needs latency. > > Latency is... > bash-3.2$ ./socat TCP-LISTEN:5001 PIPE & exec > 99<>/dev/tcp/127.0.0.1/5001 ; time for (( a=0; a<1000; a++ )); do echo > $a >&99; read <&99; done; exec 99>&- > [1] 4492 > > real 0m1.959s > user 0m0.062s > sys 0m0.172s > bash-3.2$ > [1]+ Done ./socat TCP-LISTEN:5001 PIPE > > ...about 2ms round-trip. How is this a problem?
This adds up to the screen reader latency, etc. Really, we tried both, and while tcp/ip was a bit painful, local sockets were smooth. Samuel -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://cygwin.com/docs.html FAQ: http://cygwin.com/faq/
