Jack, Can you reproduce this problem yourself? Does it make sense to experience this behavior?
Thanks, Rumen Telbizov On Wed, Sep 25, 2013 at 11:23 AM, Jack Vogel <jfvo...@gmail.com> wrote: > > Thanks for the investigation, I guess what I'm wondering the most right > now is if the patch from > Oleg is a good change in general, so any others that can test and give me > results would be appreciated. > > Thanks, > > Jack > > On Wed, Sep 25, 2013 at 11:14 AM, Rumen Telbizov <telbi...@gmail.com>wrote: > >> Hi Jack, >> >> Thanks for the suggestions and looking into this. >> Here are a few additional bits of information that you requested: >> >> 1. We did disable spanning tree on the switch port and the result of that >> is that basically now creating/destroying a vlan on the ix interface makes >> it freeze for about 3 seconds from previously 6. >> 2. I brought manually the physical interface down (ifconfig ix1 down) and >> then up and measured the time it took for the interface on the switch to >> show as up - and that was again about 3 seconds. So basically it seems to >> me like that's how long it normally takes for a link to be negotiated. >> 3. We tweaked a setting on the switch which instructs the port to be down >> for 5 seconds before it's considered down. Then repeated the test again and >> the result was that now the "freeze" period got reduced to 1.5 seconds and >> no ping packets were lost but one of the packets returned with 1500 ms >> delay. My guess on this one is that since the switch ignored the flapping >> of the interface, bringing it back up was much faster. So it does mask the >> problem somewhat but it is still there - the interface seems to go down. >> >> Next steps: >> 1. I will reinstall this machine with the latest 9.2 and repeat the tests >> see what happens. >> 2. If the previous one fails - I'll try the patch that Oleg sent. Thanks >> a lot for providing that patch. >> >> I'll update this list with more findings. >> >> Thank you, >> Rumen Telbizov >> >> >> >> On Wed, Sep 25, 2013 at 10:01 AM, Jack Vogel <jfvo...@gmail.com> wrote: >> >>> Rumen, >>> >>> I'd like to know if you can check the spanning tree setting as Daniel >>> mentioned and if that solves it, >>> I do know that that can cause considerable delay in link transitions. >>> Also, can you see if you see >>> different behavior by going to the latest 9.2 bits? >>> >>> Oleg thanks for the patch, I will check it out and have my validation >>> engineer do some tests and >>> we'll get to the bottom of this. >>> >>> Jack >>> >>> >>> >>> On Wed, Sep 25, 2013 at 9:57 AM, Rumen Telbizov <telbi...@gmail.com>wrote: >>> >>>> Thanks for the patch Oleg. >>>> I'll give it a try but I would also like to hear back from Jack. >>>> >>>> Oleg, can you confirm that you're experiencing the exact same >>>> problem/behavior? What kind of switch is connected on the other end? >>>> >>>> Thanks, >>>> Rumen Telbizov >>>> >>>> >>>> On Wed, Sep 25, 2013 at 9:40 AM, Oleg Bulyzhin <o...@freebsd.org> >>>> wrote: >>>> >>>> > >>>> > I'm running my ixgbe servers with attached patch. >>>> > It does solve this problem for me. >>>> > >>>> > -- >>>> > Oleg. >>>> > >>>> > ================================================================ >>>> > === Oleg Bulyzhin -- OBUL-RIPN -- OBUL-RIPE -- o...@rinet.ru === >>>> > ================================================================ >>>> > >>>> > >>>> >>>> >>>> -- >>>> Rumen Telbizov >>>> >>>> Unix Systems Administrator <http://telbizov.com> >>>> _______________________________________________ >>>> 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" >>>> >>> >>> >> >> >> -- >> Rumen Telbizov >> Unix Systems Administrator <http://telbizov.com> >> > > -- Rumen Telbizov Unix Systems Administrator <http://telbizov.com> _______________________________________________ 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"
