Thanks, but it has the same behaviour with 1100 byte long packets, which is well under the size of the MTU.
-----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Marcello Vezzelli Sent: Thursday, March 17, 2005 5:17 PM To: ICS support mailing Subject: Re: [twsocket] UDP datagramreceive periodically freezes for seconds Udvari András László ha scritto: > Hi List, > > I wrote a little client-server application, which measures UDP datagram > transfer speed. The server is using TWSocketServer, and sends a 1500 byte > length UDP datagram in every half seconds. The number of datagrams to be sent > is a parameter, tipically some 100, below 1000. The client side receive these > packets measures the speed (bytes/second) and the counts the missing or lost > packets (every packet has an incremental unique id). > > But on the client side there is a strange behaviour: in about every minute no > datagram is coming for some seconds, and after that all of them coming in one > bunch, like if emptying some kind of buffer. After that everything returns > normal for about another 1 minute. > > Is it a normal behaviour, or am I doing something wrong? On the server side > everything seems to be OK, according to log file every packet is sent with > correct timing. You should pay attention to the maximum MTU of your network, which is likely to be lower than 1500. One explanation to your problem could be that some network device (could be windows network layer too) waits for UDP fragments then sends reconstructed packets in a short time. Try to lower packet size to 1400, or exactly to your network MTU. -- Marcello Vezzelli CTO Software Development Department E-Works s.r.l. tel. +39 059 2929081 fax +39 059 2925035 Direzionale 70 - Via Giardini 456/c 41100 Modena - Italy -- To unsubscribe or change your settings for TWSocket mailing list please goto http://www.elists.org/mailman/listinfo/twsocket Visit our website at http://www.overbyte.be -- To unsubscribe or change your settings for TWSocket mailing list please goto http://www.elists.org/mailman/listinfo/twsocket Visit our website at http://www.overbyte.be
