Hello, Gianluca! Thank you, for your attention and reply.
Well, and within Wireshark too (but this is not quite correct place for that). When i receive one packet from my device i'm emmideatly send back received packet back(for testing) and using oscilloscope watch for my laptop ethernet card TX+ and TX- pins. Also, i've tried to use different handles(pcap_open) for capturing/sening data, no changes the same result. :( 17.03.2010, в 20:06, Gianluca Varenni написал(а): > What is the original delay between the packets? > > Are you looking at the timestamps with wireshark? > > Have a nice day > GV > > -------------------------------------------------- > From: "Alimjan Kuramshin" <[email protected]> > Sent: Wednesday, March 17, 2010 9:58 AM > To: <[email protected]> > Subject: [Winpcap-users] Packets capture latency > >> Hello, everyone! My name is Alimjan and i'm developing custom board with >> the ethernet device and i've got some problem >> with capturing data from it .. >> >> I'm using Notebook Asus G1S with Windows XP + SP3 installed to connect to >> my board. Using WinPcap(4.1.1), i'm capture data from the board. So, i've >> found that delay between the captured packets is a very 'vary' i mean that >> it has huge spread, e.g, >> at 10 mbits/s i've got 45-70 us delay, it is normal i gues, but some times >> this delay grow up to 3-7 ms (milliseconds), for example, distance between >> packets: 45 us, 46 us, 50 us, 47 us and so on.. then >> 4 ms, 7 ms, 1 ms, and then again 53 us, 47 us and so on, the repeat... >> Number of 'normal' delay is also very 'vary', delay may appear in a >> different numbers of received packets, no logic :( >> >> My laptop is directly connected to my board e.g. cross TX->RX, RX->TX, no >> hubs or something. Also using oscilloscope connected to the TX+ and TX- >> lines i've found that it is no delay between packet that my custom board >> (device) have send. Anybody please, help me to solve this situation, >> may be i'm doing something wrong? >> >> P.S. i'm using winpcap exapmle code to capture the packets with callback >> method and within pcap_next_ex. >> >> P.P.S i'm sorry for my english spelling skill, i hope that you can >> understand my. >> >> Many thanks, bye.. >> >> _______________________________________________ >> Winpcap-users mailing list >> [email protected] >> https://www.winpcap.org/mailman/listinfo/winpcap-users > > _______________________________________________ > Winpcap-users mailing list > [email protected] > https://www.winpcap.org/mailman/listinfo/winpcap-users _______________________________________________ Winpcap-users mailing list [email protected] https://www.winpcap.org/mailman/listinfo/winpcap-users
