[ROOT] signal/slot speed issues

From: Joe Robe (joer00@yahoo.com)
Date: Wed Mar 06 2002 - 15:12:04 MET


Hi again,

for best system design I just need to know if for communication signal/slots are the fastest what I can get. Its written that a slot connected to a signal is executed immediately. So there is no timer controlling the execution ? What is the expected delay time between emit and execution of method nsec,msec ? Any numbers of signals where problems start on a normal (lets say Pentium 500 ) machine ?

I need to connect stock data coming from a T1 to several running app's (trading systems etc. all based on Anton Fokins RQUANT). So theoretical its possible that I get 30.000 quotes per second, issuing at least 30.000 signals. Is that still a feasible number ? To avoid loosing any data I would implement a MaxConnections data member, I just need to know where the limits are.

Also what would be the best way to MONITOR the systems performance, i.e.. how would I check if the system is not able anymore to handle the data ? I guess just checking the cpu % would not be good.

Thanks for any help

Joe




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