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From: rihad <rihad@mail.ru>
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To: Julian Elischer <julian@elischer.org>
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Cc: freebsd-net@freebsd.org, Robert Watson <rwatson@FreeBSD.org>
Subject: Re: dummynet dropping too many packets
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Julian Elischer wrote:
> rihad wrote:
> 
>>>
>> The change definitely helped! There are now more than 3200 users 
>> online, 460-500 mbps net traffic load, and normally 10-60 (up to 150 
>> once or twice) consistent drops per second as opposed to several 
>> hundred up to 1000-1500 packets dropped per second before the rebuild. 
>> What's interesting is that the drops now began only after the ipfw 
>> table had around 3000 entries, not 2000 like before, so the change 
>> definitely helped. Just how high can maxlen be? Should I try 2048? 4096?
> 
> is Hz still 4000?
> 
No, I've set it to 2000 as per recommendations for HZ in NOTES. Should I 
try 4000? 6000? 8000? Or maybe just increase the bce queue length and 
rebuild? :)