> We have realtime queue architecture on asterisk 1.8.7.0
> I noticed that when we change strategy from any other to 'linear' it
> requires Asterisk restart take the change in effect.
> I have one realtime queue '1' with strategy set to 'ringall' and I
> change its strategy to 'linear'. Now when check on Asterisk CLI it
> shows me warning given below.
>
> demo*CLI> queue show 1
> 1 has 0 calls (max 500) in 'ringall' strategy (0s holdtime, 0s
> talktime), W:1, C:0, A:0, SL:0.0% within 100s
> No Members
> No Callers
>
> [Nov 8 12:10:18] WARNING[4887]: app_queue.c:2034 queue_set_param:
> Changing to the linear strategy currently requires asterisk to be
> restarted.
> [Nov 8 12:10:18] WARNING[4887]: app_queue.c:2034 queue_set_param:
> Changing to the linear strategy currently requires asterisk to be
> restarted.
>
>
> This behaviour doesn't happen when strategy changed to other than
> 'linear'.
> So why is Asterisk restart needed for this change?
>
Because the creation of the queue members container requires different
properties for linear support.
if (q->strategy == QUEUE_STRATEGY_LINEAR || q->strategy ==
QUEUE_STRATEGY_RRORDERED)
/* linear strategy depends on order, so we have to place all
members in a single bucket */
q->members = ao2_container_alloc(1, member_hash_fn,
member_cmp_fn);
else
q->members = ao2_container_alloc(37, member_hash_fn,
member_cmp_fn);
The other strategies will work with the linear version of the container
but are just not as efficient.
Richard
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