Date: Tue, 24 Feb 2004 16:37:31 +0100 From: Andre Oppermann <andre@freebsd.org> To: src-committers@FreeBSD.org, cvs-src@FreeBSD.org, cvs-all@FreeBSD.org Subject: Re: cvs commit: src/sys/netinet tcp_input.c tcp_subr.c tcp_var.h Message-ID: <403B6FBB.F1BD933C@freebsd.org> References: <200402241527.i1OFRgdm072232@repoman.freebsd.org>
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Andre Oppermann wrote: > > andre 2004/02/24 07:27:42 PST > > FreeBSD src repository > > Modified files: > sys/netinet tcp_input.c tcp_subr.c tcp_var.h > Log: > Convert the tcp segment reassembly queue to UMA and limit the maximum > amount of segments it will hold. > > The following tuneables and sysctls control the behaviour of the tcp > segment reassembly queue: > > net.inet.tcp.reass.maxsegments (loader tuneable) > specifies the maximum number of segments all tcp reassemly queues can > hold (defaults to 1/16 of nmbclusters). > > net.inet.tcp.reass.maxqlen > specifies the maximum number of segments any individual tcp session queue > can hold (defaults to 48). > > net.inet.tcp.reass.cursegments (readonly) > counts the number of segments currently in all reassembly queues. > > net.inet.tcp.reass.overflows (readonly) > counts how often either the global or local queue limit has been reached. > > Tested by: bms, silby > Reviewed by: bms, silby This changes sizeof(struct tcpcb) and makes a recompile of libkvm and related userland network utilities neccessary. -- Andre
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