If WinPcap doesn't report any drops, the problem may be in the lower layers (i.e. NIC or NIC driver). The first step to locate it is probably trying with a different network card and see what happens.
Loris ----- Original Message ----- From: "Eric St.John" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Tuesday, August 10, 2004 7:35 AM Subject: [WinPcap-users] Mysterious Packet Loss using Packet library I'm using the packet library to capture an incoming 35 MB/s stream of udp packets to directly to a 1GB array in physical memory with minimal processing (CPU usage is nowhere near max). After extensive testing and tuning of buffer sizes(PacketSetBuff() and PacketInitPacket()), I was able to obtain 99.993% packet integrity. The WinPcap Packet library statistics claims 0 packet loss, but on analysis of packet data I find that the system is indeed losing packets in groups of about 25-35 at a nearly constant period of 2.22956 s � 0.000043 s. The total loss is 370 of 734060 1.5 KB packets. Any ideas on what can be causing this? It seems like a glass cieling: I see this same behavior on a number of different buffer size combinations. Thanks, Eric ====================== This is the WinPcap users list. It is archived at http://www.mail-archive.com/[EMAIL PROTECTED]/ To unsubscribe use mailto: [EMAIL PROTECTED] ====================== ================================================================== This is the WinPcap users list. It is archived at http://www.mail-archive.com/[EMAIL PROTECTED]/ To unsubscribe use mailto: [EMAIL PROTECTED] ==================================================================
