> On Jul 27, 2020, at 15:01, Mark Johnston <ma...@freebsd.org> wrote: > > On Sun, Jul 26, 2020 at 06:16:07PM -0400, Joe Clarke wrote: >> About two weeks ago, I upgraded from the latest 11-stable to the latest >> 12-stable. After that, I periodically see the network throughput come to a >> near standstill. This FreeBSD machine is an ESXi VM with two interfaces. >> It acts as a router. It uses vmxnet3 interfaces for both LAN and WAN. It >> runs ipfw with in-kernel NAT. The LAN side uses a bridge with vmx0 and a >> tap0 L2 VPN interface. My LAN side uses an MTU of 9000, and my vmx1 (WAN >> side) uses the default 1500. >> >> Besides seeing massive packet loss and huge latency (~ 200 ms for on-LAN >> ping times), I know the problem has occurred because my lldpd reports: >> >> Jul 26 15:47:03 namale lldpd[1126]: frame too short for tlv received on >> bridge0 >> >> And if I turn on ipfw verbose messages, I see tons of: >> >> Jul 26 16:02:23 namale kernel: ipfw: pullup failed >> >> This leads to me to believe packets are being corrupted on ingress. I’ve >> applied all the recent iflib changes, but the problem persists. What causes >> it, I don’t know. >> >> The only thing that changed (and yes, it’s a big one) is I upgraded to >> 12-stable. Meaning, the rest of the network infra and topology has remained >> the same. This did not happen at all in 11-stable. >> >> I’m open to suggestions. > > There are some fixes for vmx not present in stable/12 (yet). I did a > merge of a number of outstanding revisions. Would you be able to test > the patch? I haven't observed any problems with it on a host using igb, > but I have no ability to test vmx at the moment.
I’m down to test anything. I did notice quite a few vmxnet3 changes around performance that appealed to me. I tried a few of them on my last kernel. That took much longer to exhibit the problem, but eventually did. I can tell you I don’t have all of these patches in, though. I’ll build with this diff and start running it now. I’ll let you know how it goes. Thanks! Joe --- PGP Key : http://www.marcuscom.com/pgp.asc _______________________________________________ freebsd-stable@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-stable To unsubscribe, send any mail to "freebsd-stable-unsubscr...@freebsd.org"
