Date: Fri, 30 Apr 2010 14:33:34 -0700 From: Julian Elischer <julian@elischer.org> To: Maxim Sobolev <sobomax@sippysoft.com> Cc: freebsd-net@FreeBSD.ORG, "current@freebsd.org" <current@FreeBSD.ORG> Subject: Re: Making IFQ_MAXLEN tunable Message-ID: <4BDB4CAE.20006@elischer.org> In-Reply-To: <4BDB3C31.4050709@sippysoft.com> References: <4BDB3C31.4050709@sippysoft.com>
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On 4/30/10 1:23 PM, Maxim Sobolev wrote: > Hi, > > Many network drivers in the FreeBSD kernel use the IFQ_MAXLEN value to > set length of the outgoing packets queue. The default value for that > parameter is only 50, which is pretty low especially for the cases when > the system handles lot of small packets and can cause ENOBUFS in > applications under the load. The following patch makes IFQ_MAXLEN a > tunable. I am also tempted to bump the default value for IFQ_MAXLEN > 10-fold, but would like to hear what do people think about it first. > > http://sobomax.sippysoft.com/IFQ_MAXLEN.diff > > -Maxim > _______________________________________________ > freebsd-net@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-net > To unsubscribe, send any mail to "freebsd-net-unsubscribe@freebsd.org" so just tunable? not a sysctl :-) patch could be a lot smaller if you defined IFQ_MAXLEN to be V_ifqmaxlen (do different vimages want a different value?)
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