QM, ATTEMPTS patch and strange statistics

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Vide:
Hi

we have an Asterisk 1.2.24 installation with the ATTEMPTS patch to app_queue.c and a recompiled Asterisk, and in general it works.
Anyway, I have noted a very strange behaviour. Situation:
- queue with 4 agents, everyone is busy talking
- asterisk console reports this:

Local/707@from-internal/n (dynamic) (In use) has taken 1 calls (last was 191 secs ago)
Local/708@from-internal/n (dynamic) (In use) has taken 3 calls (last was 330 secs ago)
Local/705@from-internal/n (dynamic) (In use) has taken 4 calls (last was 282 secs ago)
Local/704@from-internal/n (dynamic) (In use) has taken 17 calls (last was 138 secs ago)

so these are 4 SIP channels and Asterisk know that the 4 are busy.
- I have the

ringinuse = no

option in the appropriate queue in queues.conf but nonetheless ATTEMPTS are appended to the queue_log! This is the really annoying, that makes ATTEMPTS statistics completely useless in my QM installation: if all agents are busy, as said, and a new call enter the queue, an ATTEMPT is recorded for EVERY agent, every N seconds where N is the "retry" value in queues.conf.
This doesn't have to work like this, agents are busy because they are talking, not because they are rejecting calls/not answering. Anyone experiencing something similiar?
Is my configuration wrong somehow? or is this considered "normal"? I repeat: asterisk correctly detect if th sip channel is in use or if it isn't.

QueueMetrics:
I have a feeling this is not normal - whiuch queue strategy are you running?

Vide:
In this very queue, rrmemory, but it happens with fewestcalls as well.

QueueMetrics:
I am not sure why this happens, likely the patch went in the wrong place.... would you care to post a sample call with all the attempts logged?

Vide:
This is where tha patch was applied in apps/app_queue.c

1574 if (res) {
1575 /* Again, keep going even if there's an error */
1576 if (option_debug)
1577 ast_log(LOG_DEBUG, "ast call on peer returned %d\n", res);
1578 if (option_verbose > 2)
1579 ast_verbose(VERBOSE_PREFIX_3 "Couldn't call %s\n", tmp->interface);
1580 ast_hangup(tmp->chan);
1581 tmp->chan = NULL;
1582 tmp->stillgoing = 0;
1583 (*busies)++;
1584 return 0;
1585 } else {
1586 if ( qe->parent->strategy != QUEUE_STRATEGY_RINGALL ) {
1587 ast_queue_log(qe->parent->name, qe->chan->uniqueid, tmp->interface, "AGENTATTEMPT", "");
1588 }
1589
1590 if (qe->parent->eventwhencalled) {
1591 manager_event(EVENT_FLAG_AGENT, "AgentCalled",
1592 "AgentCalled: %s\r\n"
1593 "ChannelCalling: %s\r\n"
1594 "CallerID: %s\r\n"
1595 "CallerIDName: %s\r\n"
1596 "Context: %s\r\n"
1597 "Extension: %s\r\n"
1598 "Priority: %d\r\n",
1599 tmp->interface, qe->chan->name,
1600 tmp->chan->cid.cid_num ? tmp->chan->cid.cid_num : "unknown",
1601 tmp->chan->cid.cid_name ? tmp->chan->cid.cid_name : "unknown",
1602 qe->chan->context, qe->chan->exten, qe->chan->priority);
1603 }

and this is an extract of queue_log

1193735323|1193735294.133081|7006|NONE|ENTERQUEUE||$CLIENT_CLID
1193735391|1193735294.133081|7006|Local/705@from-internal/n|AGENTATTEMPT|
1193735392|1193735294.133081|7006|Local/708@from-internal/n|AGENTATTEMPT|
1193735397|1193735294.133081|7006|Local/708@from-internal/n|AGENTATTEMPT|
1193735397|1193735294.133081|7006|Local/705@from-internal/n|AGENTATTEMPT|
1193735406|1193735294.133081|7006|Local/708@from-internal/n|AGENTATTEMPT|
1193735407|1193735294.133081|7006|Local/705@from-internal/n|AGENTATTEMPT|
1193735412|1193735294.133081|7006|Local/708@from-internal/n|AGENTATTEMPT|
1193735412|1193735294.133081|7006|Local/705@from-internal/n|AGENTATTEMPT|
1193735422|1193735294.133081|7006|Local/708@from-internal/n|AGENTATTEMPT|
1193735422|1193735294.133081|7006|Local/705@from-internal/n|AGENTATTEMPT|
1193735427|1193735294.133081|7006|Local/708@from-internal/n|AGENTATTEMPT|
1193735427|1193735294.133081|7006|Local/705@from-internal/n|AGENTATTEMPT|
1193735437|1193735294.133081|7006|Local/708@from-internal/n|AGENTATTEMPT|
1193735437|1193735294.133081|7006|Local/705@from-internal/n|AGENTATTEMPT|
1193735442|1193735294.133081|7006|Local/708@from-internal/n|AGENTATTEMPT|
1193735442|1193735294.133081|7006|Local/705@from-internal/n|AGENTATTEMPT|
1193735447|1193735294.133081|7006|NONE|EXITWITHTIMEOUT|1

705 and 708 where the only two agents logged in the queue 7006 and both of them were talking.

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