Merijn Bosma wrote: Hello,
Yesterday evening we've found out that this problem still occurs, even with wsoNoReceiveLoop set. The symptoms are the same: - OnDataAvailable event is triggered continuously (close to 14000 times per second) - ReceiveStr() is called every time, returning no data - Error is always 0 in the events - The event keeps being triggered until we shut down the application. This is not a high speed stream, we sent only control data, so approx up to 100 bytes every few seconds. I'm I doing something stupid or is there something else going wrong here? If it's not me, is there any way for to determine whether this is a problem with ICS, or with the Windows call stack itself? > Francois PIETTE wrote: > >>>> One possible explanation were that anytime OnDataAvailable returns, >>>> just a few _new_ bytes are available in winsock buffer. Could be >>>> possible due to the background thread winsock creates internally >>>> with non-blocking sockets, though I'm not aware of how winsock works >>>> under the hood. >>>> >>>> >>> When in this situation, we got a few hundred calls a second, for an >>> unlimited time, where normally it's one every few seconds. >>> I agree with you, it could be a possible cause, but very unlikely. >>> >>> >> Do you receive data each time you call ReceiveStr ? If yes, then probably >> you have a fast network, and your application becomes CPU bound. >> >> > That's the thing, I don't receive any data. At least not using ReceiveStr() > >> btw: Since you don't use line mode, I strongly suggest you avoid ReceiveStr >> and instead use Receive with a fixed buffer. Calling ReceiveStr will force >> the runtime to create new string and copy data into it, and probably youthen >> copy data elsewhere for processing. All this is very CPU intensive. >> >> The best way to design a high performance application is to use a fixed >> buffer (which may be dynamically allocated but not each time you receive >> data). And use the buffer as close as possible of the processing each time >> you copy data, each time you consume CPU and memory for nothing. >> >> -- >> [EMAIL PROTECTED] >> The author of the freeware multi-tier middleware MidWare >> The author of the freeware Internet Component Suite (ICS) >> http://www.overbyte.be >> >> >> > > -- To unsubscribe or change your settings for TWSocket mailing list please goto http://lists.elists.org/cgi-bin/mailman/listinfo/twsocket Visit our website at http://www.overbyte.be
