mirror/labs-bird
1
0
Fork 0
mirror of https://gitlab.labs.nic.cz/labs/bird.git synced 2024-05-11 16:54:54 +00:00
Code Releases Activity

Rate-limit scheduling of work-events

Browse Source 
In general, events are code handling some some condition, which is
scheduled when such condition happened and executed independently from
I/O loop. Work-events are a subgroup of events that are scheduled
repeatedly until some (often significant) work is done (e.g. feeding
routes to protocol). All scheduled events are executed during each
I/O loop iteration.

Separate work-events from regular events to a separate queue and
rate limit their execution to a fixed number per I/O loop iteration.
That should prevent excess latency when many work-events are
scheduled at one time (e.g. simultaneous reload of many BGP sessions).
This commit is contained in:
Ondrej Zajicek (work)
2021-03-12 15:35:56 +01:00
parent 9cf3d53311
commit 7be3af7fa6
4 changed files with 66 additions and 6 deletions
Download Patch File Download Diff File Expand all files Collapse all files

10
nest/proto.c
View File

@@ -252,7 +252,7 @@ channel_schedule_feed(struct channel *c, int initial)
c->export_state = ES_FEEDING;
c->refeeding = !initial;
ev_schedule(c->feed_event);
ev_schedule_work(c->feed_event);
}
static void
@@ -275,7 +275,7 @@ channel_feed_loop(void *ptr)
// DBG("Feeding protocol %s continued\n", p->name);
if (!rt_feed_channel(c))
{
ev_schedule(c->feed_event);
ev_schedule_work(c->feed_event);
return;
}
@@ -291,7 +291,7 @@ channel_feed_loop(void *ptr)
/* Continue in feed - it will process routing table again from beginning */
c->refeed_count = 0;
ev_schedule(c->feed_event);
ev_schedule_work(c->feed_event);
return;
}
@@ -471,7 +471,7 @@ channel_schedule_reload(struct channel *c)
ASSERT(c->channel_state == CS_UP);
rt_reload_channel_abort(c);
ev_schedule(c->reload_event);
ev_schedule_work(c->reload_event);
}
static void
@@ -485,7 +485,7 @@ channel_reload_loop(void *ptr)
if (!rt_reload_channel(c))
{
ev_schedule(c->reload_event);
ev_schedule_work(c->reload_event);
return;
}