Hi Joe, similar question was raised by Anton Fokin about an year ago, check: http://root.cern.ch/root/roottalk/roottalk01/1098.html HTH. Regards. Valeriy Joe Robe wrote: > 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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