On Tue, Apr 16, 2019 at 10:43 AM Ben Pfaff <b...@ovn.org> wrote: > > On Wed, Apr 03, 2019 at 05:49:12PM -0700, Han Zhou wrote: > > From: Han Zhou <hzh...@ebay.com> > > > > In the main loop, if the SB DB is disconnected when there is a pending > > transaction, there can be busy loop causing 100% CPU of ovn-controller, > > until SB DB is connected again. > > > > The root cause is that when a transaction is pending, ovsdb_idl_loop_run() > > will return NULL for ovnsb_idl_txn, and chassis_run() returns NULL when > > ovnsb_idl_txn is NULL, so the condition if (br_int && chassis) is not > > satisfied and so ofctrl_run() is not executed in the main loop. If there > > is any message pending from br-int.mgmt, such as OFPTYPE_BARRIER_REPLY or > > OFPTYPE_ECHO_REQUEST, the main loop will be woken up again and again > > because those messages are not processed because ofctrl_run() is not > > invoked. > > > > This patch fixes the problem by moving ofctrl_run() above and run it > > whenever br_int is not NULL, and not care about chassis because this > > function doesn't depend on it. > > > > It also moves out sbrec_chassis_set_nb_cfg() from the "if (ovs_idl_txn)" > > just to avoid adding more indentation of the whole block to avoid >79 > > line length. > > > > Note: the changes of this patch is better to be shown with "-w" because > > most of them are indent changes. > > > > Acked-by: Numan Siddique <nusid...@redhat.com> > > Signed-off-by: Han Zhou <hzh...@ebay.com> > > --- > > > > Notes: > > v2->v3: fix >79 line found by 0-day robot > > This has a patch reject against current master, so if it's still > relevant would you mind rebasing and reposting? > Hi Ben, I just rebased and sent out v4.
Thanks, Han _______________________________________________ dev mailing list d...@openvswitch.org https://mail.openvswitch.org/mailman/listinfo/ovs-dev
