I am running Debian Linux 6.0 (2.6.32-5-amd64). My network NICS are Intel 82580 Gigabit running with the IGB network driver version 3.3.6 (firmware version 3.2-9).
I tested the performance and I noticed massive packet drops.
My test is simple: tcpreplay a file to the IGB interface and run tcpdump on the other side to verify that all packets have arrived.
Even with small throughput I experience many drops.
I switched ports to an old e1000e driver, and everything worked like a charm.
I tried doing the following and i got the same results:
Downgraded the driver version installed the sorceforce igb driver installed PF_RING with igb support Played with snaplen, and buffering I upgraded the kernel version to the latest 3.2.5 from kernel.org
Does anyone have any idea how to fix this issue?