On Thu, Nov 24, 2011 at 8:00 PM, Jeremy Chadwick <free...@jdc.parodius.com>wrote:
> On Thu, Nov 24, 2011 at 07:13:39PM -0600, Kris Bauer wrote: > > On Thu, Nov 24, 2011 at 5:35 PM, Adrian Chadd <adr...@freebsd.org> > wrote: > > > > > Have you tried disabling the tcp offload features of your NIC? > > > > > > > > > Adrian > > > > > > > To test this, I added net.inet.tcp.tso=0 to sysctl.conf and restarted the > > box; it didn't work. net.inet.tcp.reass.cursegments immediately started > > climbing up and were exhausted within an hour. > > I think Adrian was referring to RXCSUM and TXCSUM on your NIC; TSO is > another offloading feature. > > See ifconfig(8) for how to disable those. > > Be aware that disabling them in real-time (e.g. ifconfig xxx -rxcsum > -txcsum) may cause problems; there are some NIC drivers on FreeBSD which > do not like you doing this once the NIC has established link (meaning > "reloading the driver" (for lack of better term) results in wonky > behaviour). So you may instead want to add those hyphen-options to your > ifconfig_XXX lines in /etc/rc.conf and reboot the box. > > If none of this solves the problem, then I consider this a priority 0 > blocker (read: "all hands on deck") issue with the IP stack in FreeBSD > 9.x and will need immediate attention. > > I would strongly recommend a developer or clueful end-user begin > tracking down who committed all of these bits and CC them into the > thread. I would start by looking who implemented the > net.inet.tcp.reass.cursegments sysctl, because that isn't in RELENG_8 at > all. > > -- > | Jeremy Chadwick jdc at parodius.com | > | Parodius Networking http://www.parodius.com/ | > | UNIX Systems Administrator Mountain View, CA, US | > | Making life hard for others since 1977. PGP 4BD6C0CB | > > I have added -rxcsum -txcsum -tso to rc.conf and rebooted the box. This has not solved the problem. After a half-hour usage, I'm already up to reass.cursegments=2182 and it keeps climbing. Kris _______________________________________________ freebsd-stable@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-stable To unsubscribe, send any mail to "freebsd-stable-unsubscr...@freebsd.org"
