I now use smaller traces and no such problem again. I think it is because of heavy load. ... Thanks.
On Mon, Mar 1, 2010 at 10:12 PM, Martin Casado <cas...@nicira.com> wrote: > Actually nevermind, I don't think the HP switch support inband control so > you must be using out of band. > > Another option is to turn off the echo timer in Nox ... > > >> Sorry, my English is poor, what do you mean by "out of band control"? :) >> >> On Mon, Mar 1, 2010 at 10:07 PM, Martin Casado <cas...@nicira.com> wrote: >> >>> >>> I wonder if this is a problem with lost echo requests under load ... >>> >>> Can you set up your environment to use out of band control? >>> >>> >>>> >>>> My program runs about 15 mins, it processes some traces. Datapath >>>> leaves at around 12 mins. >>>> Current CPU load is around 30%, and hit 35% occasionally. >>>> >>>> On Mon, Mar 1, 2010 at 9:59 PM, kk yap <yap...@stanford.edu> wrote: >>>> >>>> >>>>> >>>>> Just to be blunt. What is the CPU load of your HP? >>>>> >>>>> Regards >>>>> KK >>>>> >>>>> On 1 March 2010 21:42, Guanyao Huang <gyhu...@ucdavis.edu> wrote: >>>>> >>>>> >>>>>> >>>>>> Which part defines the time interval for this echo request? I guess >>>>>> enlarger it will temporarily handle my problem. >>>>>> >>>>>> On Mon, Mar 1, 2010 at 9:38 PM, kk yap <yap...@stanford.edu> wrote: >>>>>> >>>>>> >>>>>>> >>>>>>> Hi Guanyao, >>>>>>> >>>>>>> NOX periodic checks if the switch is still alive by sending an echo >>>>>>> request. Basically, your switch did not reply. You should look at >>>>>>> the tcpdump to see if you can find the echo reply. If yes, bug >>>>>>> people >>>>>>> in this list. If no, debug your switch. >>>>>>> >>>>>>> Regards >>>>>>> KK >>>>>>> >>>>>>> On 1 March 2010 21:34, Guanyao Huang <gyhu...@ucdavis.edu> wrote: >>>>>>> >>>>>>> >>>>>>>> >>>>>>>> Hi >>>>>>>> Sorry to bother others. >>>>>>>> In my program the datapath leaves network again. This time it seems >>>>>>>> a >>>>>>>> little different: >>>>>>>> >>>>>>>> 00341|openflow|WARN:stream: no response to inactivity probe after 15 >>>>>>>> seconds, disconnecting >>>>>>>> 00342|nox|WARN:stream: disconnected (Protocol error) >>>>>>>> Datapath leave, f7:ca:e4:00:01:90 >>>>>>>> 00343|bindings_storage|ERR:NDB error on get_locnames_cb (ok if >>>>>>>> transient): Can't find specified row >>>>>>>> 00344|openflow|WARN:stream: no response to inactivity probe after 15 >>>>>>>> seconds, disconnecting >>>>>>>> 00345|nox|WARN:stream: disconnected (Protocol error) >>>>>>>> Datapath leave, f7:ca:e4:00:01:2c >>>>>>>> 00346|openflow|WARN:stream: no response to inactivity probe after 15 >>>>>>>> seconds, disconnecting >>>>>>>> 00347|nox|WARN:stream: disconnected (Protocol error) >>>>>>>> Datapath leave, f7:ca:e4:00:00:c8 >>>>>>>> >>>>>>>> >>>>>>>> I am wondering what is this 15 second probe. >>>>>>>> >>>>>>>> Thanks. >>>>>>>> >>>>>>>> _______________________________________________ >>>>>>>> nox-dev mailing list >>>>>>>> nox-dev@noxrepo.org >>>>>>>> http://noxrepo.org/mailman/listinfo/nox-dev_noxrepo.org >>>>>>>> >>>>>>>> >>>>>>>> >>>> >>>> _______________________________________________ >>>> nox-dev mailing list >>>> nox-dev@noxrepo.org >>>> http://noxrepo.org/mailman/listinfo/nox-dev_noxrepo.org >>>> >>>> >>> >>> > > _______________________________________________ nox-dev mailing list nox-dev@noxrepo.org http://noxrepo.org/mailman/listinfo/nox-dev_noxrepo.org
