Date: Thu, 5 Jun 2003 22:13:35 +0200 From: Vincent Jardin <vjardin@wanadoo.fr> To: Julian Elischer <julian@elischer.org>, Michael Shiu <mshiu@net-yan.com> Cc: freebsd-net@freebsd.org Subject: Re: Does Netgraph in FBSD 5.x SMP requires GIANT lock? Message-ID: <200306052213.35422.vjardin@wanadoo.fr> In-Reply-To: <Pine.BSF.4.21.0306050436070.80038-100000@InterJet.elischer.org> References: <Pine.BSF.4.21.0306050436070.80038-100000@InterJet.elischer.org>
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Maybe one giant2thread node could be introduced into the graphs. It could= put=20 the messages and the mbufs into a queue from a giant context, then they c= ould=20 be processed from a thread. Is it a possible architecture or do I forget something ? Regards, Vincent Le Jeudi 5 Juin 2003 13:38, Julian Elischer a =E9crit : > On Thu, 5 Jun 2003, Michael Shiu wrote: > > Dear all, > > > > Just like to know if the netgraph code running 5.x SMP kernel require= s > > the GIANT lock? > > Netgraph has lovking built into it but I have not > had teh time yet to "thrown the switch" and run it without > giant. (actually it would only have giant if the edge node that > introduces the packet has giant, or if it's running > as a net thread.) > > What is your graph like? > > > I have the netgraph doing bridging right now but the performance is > > limited by the CPU (right now, it is something around 100k pkt/s in > > 4-STABLE). Does adding another CPU together with upgrading to 5.x be = of > > any help? I guess the bottleneck right now is only one thread is > > executing in interrupt context with GIANT being held. Am I right? > > > > _Michael > > > > _______________________________________________ > > 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= " > > _______________________________________________ > 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"
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