In function bridge_refresh_ofp_port wrote as follows. And I note that if we
delete the two lines:
bridge_queue_if_cfg(br, iface->cfg, port->cfg);
iface_destroy(iface);
performance will improve dramatically, in scenario: mutilple virtual machines
with 10 nic card shutdown currently.
So I wonder why we should "Demote these to "if_cfg""? and when will it hanppen?
Thx.
/* Some ifaces may not have "ofp_port"s in ofproto and therefore don't
* deserve to have "struct iface"s. Demote these to "if_cfg"s so that
* later they can be added to ofproto. */
HMAP_FOR_EACH_SAFE (port, port_next, hmap_node, &br->ports) {
struct iface *iface, *iface_next;
LIST_FOR_EACH_SAFE (iface, iface_next, port_elem, &port->ifaces) {
if (iface->ofp_port < 0) {
bridge_queue_if_cfg(br, iface->cfg, port->cfg);
iface_destroy(iface);
}
}
if (list_is_empty(&port->ifaces)) {
port_destroy(port);
}
}
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