Date: Thu, 30 Nov 2006 07:57:11 -0800 From: "David Christensen" <davidch@broadcom.com> To: "Kirk Davis" <Kirk.Davis@epsb.ca>, freebsd-net@freebsd.org Subject: RE: Broadcom (bce) support and POLLING Message-ID: <09BFF2FA5EAB4A45B6655E151BBDD90302836BEB@NT-IRVA-0750.brcm.ad.broadcom.com> In-Reply-To: <04C71268DFDAA8499EC1A248A44B6A2B0855B143@Exchange21.EDU.epsb.ca>
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Polling is not currently supported in the bce driver. Dave=20 > Hi, > We have just upgraded to a Dell 2950 for our main BGP router. > With the constant rise in traffic through the box, I have started to > notice some dropped packets so I figured I would take a look=20 > at putting > the interfaces into polling more to squeeze a little more packets > through them. >=20 > I have added the DEVICE_POLLING and HZ=3D1000 to the kernel. I > turned on polling for the bce interfaces and they pass traffic at low > volumes (like ping tests). If I put my fluke traffic generators on > either side of the box and try to ramp it up to even 100Mb=20 > (they are Gig > links) then the interfaces will stop responding. Turning off polling > will get them to respond again. >=20 > I know that the bce support in still quite new. Has anyone else > testing with polling and the bce interfaces? Is there any more > information that I can get for the developers to help track this down. > The system is not in production right now so I can use it for testing. >=20 > As another note... I added some Intel (em) cards into the box > and tested with them. Polling worked great on them but I was=20 > only able > to get about 200k packets per second before it starts=20 > dropping packets. > Is this about what I should expect? >=20 > [root@ ~]# uname -a > FreeBSD 6.2-RC1 FreeBSD 6.2-RC1 #2: Tue Nov 28 18:10:56 MST 2006 > root@:/usr/obj/usr/src/sys/INET-GW i386 >=20 > ---- Kirk >=20 >=20 >=20 > _______________________________________________ > 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" >=20 >=20
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