On Sat, Mar 06, 2010 at 12:08:22PM -0800, Nick Rogers wrote: > Yes, this was the first em(4) problem I ran into when upgrading from > 7.2-RELEASE to 8.0-RELEASE. Yourself and others on another thread eventually > recommended turning off TSO and what not. I never had a chance to thoroughly > test this solution on this particular hardware because we had already > switched to a different set of interfaces (on-motherboard bge(4)). We also > had that ALTQ problem popup on em which I'm sure you remember, which > prevented me from going back to the em interfaces for a while.
I've re-read your ALTQ post (Subject "em(4) + ALTQ broken") and I noticed you didn't provide any details regarding *how* you're using ALTQ on your systems (specifically, no pf.conf directives provided). We use pf and ALTQ on all our RELENG_7 and RELENG_8 systems, exclusively using em(4), without any problems. I should note that we only utilise the ALTQ pieces of pf.conf on RELENG_7, but ALTQ is included in our RELENG_8 systems' kernels. The ALTQ feature we use is "bandwidth" for rate-limiting certain IPs bound to em(4) interfaces. We've used this successfully at both 100mbit and 1000mbit interface rates. I can provide specific details of the systems (pciconf -lvc from them, including OS release + etc.) if you'd like to compare. I'm almost certain the NIC model you use differs from ours, including the fact that our NICs are PCIe-bound, and do use MSI + TSO + all forms of checksum offloading. Why I care: upgrading our RELENG_7 machine which uses ALTQ directives is on my to-do list, and if this feature is somehow broken under RELENG_8, I need to know in advance so I can use ipfw + dummynet instead. -- | Jeremy Chadwick j...@parodius.com | | Parodius Networking http://www.parodius.com/ | | UNIX Systems Administrator Mountain View, CA, USA | | Making life hard for others since 1977. PGP: 4BD6C0CB | _______________________________________________ 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"
