Date: Sat, 17 Oct 2009 18:20:27 -0700 From: Julian Elischer <julian@elischer.org> To: rihad <rihad@mail.ru> Cc: freebsd-net@freebsd.org, Robert Watson <rwatson@FreeBSD.org> Subject: Re: dummynet dropping too many packets Message-ID: <4ADA6D5B.9030601@elischer.org> In-Reply-To: <4AD9CB54.2020608@mail.ru> References: <4AD6D99E.10805@mail.ru> <4AD95493.40200@mail.ru> <4AD96422.1040008@mail.ru> <4AD97CF7.6020602@elischer.org> <4AD9CB54.2020608@mail.ru>
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rihad wrote: > 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? :) you could try combinations.
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