rihad wrote:
Just rebooted with the "ifp->if_snd.ifq_drv_maxlen = 1024;" kernel, all ok so far. There's currenlty only 1000 or so entries in the ipfw table and around 350-400 net mbps load, so I'll wait a few hours for the numbers to grow to >2000 and 460-480 respectively and see if the drops still occur.
I'm not sure of anything now... It's 7 p.m. here, and during this busy time of day in terms of network use there are 350-500 up to 600 drops per second at around 530-550 mbps net load. This is roughly equivalent to 2-7 mbps dropped on output. It might be better than before. Next thing I'll try is bce queue maxlen 1024 -> 2048, and HZ 2000 again "back" to 4000.
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