>> We've got same problems (on a routeur, not a firewall). Increasing >> MAX_INTS_PER_SEC to 24000 increased bandwith and lowered packet loss. >> Our cards are "Intel PRO/1000 (82576)" and "Intel PRO/1000 FP >> (82576)". > >Did you try to increase the number of descriptor? >#define EM_MAX_TXD 256 >#define EM_MAX_RXD 256 > >I've tried up to 2048 (and with MAX_INTS_PER_SEC = 16000) but it looks >worth.
Say you increase this. That means on a single interrupt, the handler could be forced to handle around 2000 packets. Nothing else will happen on the machine during that period. Can you say 'interrupt latency increase' boys and girls?
