Using newest libpcap on linux, I have a delay of ~0.3s before a packet is
returned via pcap_dispatch(). Kernel is 3.14 and the problem is only with packet-ring.
Disabling packet ring via configure has no such delay (verified by strace
using recvfrom()). The problem was once fixed in
feab221 (I think) but seemed to be reintroduced by V3 mmap handling code?

Anyone else experianced such time delays on certain kernel/pcap combinations?