[WinPcap-users] Mysterious Packet Loss using Packet library

[Eric St.John]

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

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