22 Dec
2011
22 Dec
'11
7:58 p.m.
Hello,
On 12/22/11 6:19 PM, Andreas Granig wrote:
Got the cause of the issue.
What happens is that there's an AOR which registers ever 120 seconds.
For some reason, the location entry is in usrloc cache, but not in db.
What happens now is that usrloc tries an "update" query in the db,
because it still assumes that the entry is there, which obviously fails.
If you remove the entry from usrloc (kamctl ul rm<aor>), then on the
next re-registration it's both inserted into the cache and into the db.
Wondering how it could happen to get out of sync, and how we could
improve this. Maybe using a "replace into" instead of "update", at
least
for mysql? Suggestions?
is the timer interval parameter of usrloc higher than
120sec?
http://kamailio.org/docs/modules/3.2.x/modules_k/usrloc.html#id2494575
IIRC, there should be anyhow a flag to mark if the record is in db or
not, and based on that do insert or update, maybe something is lost
there. If you do 'kamctl ul show __aor__', what are the values for flags
fields?
Another option, perhaps more portable, but with two db hits is: update
and if fails then insert -- considering that these should be corner
cases, maybe the performance is not affected much. A blended version is
even better, if the db driver supports replace, do replace instead of
update (I don't know if replace is faster/slower than update).
Cheers,
Daniel
Andreas
On 12/22/2011 05:12 PM, Andreas Granig wrote:
> Hi,
>
> Could you please tell me which of the three timer processes ("timer",
> "slow timer" or "timer nh") is responsible for cleaning up the
internal
> usrloc cache?
>
> Looks like every now and then the cleanup of the internal location cache
> is starting to fail. Funny thing is that expired locations are removed
> from the mysql backend, but not from the internal cache. We're running
> kamailio 3.1.5, are there any known issues fixed since that version?
>
> In the meanwhile we're trying to pin the issue down, but maybe someone
> has a clue...
>
> Andreas
>
>
>
>
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--
Daniel-Constantin Mierla -- http://www.asipto.com
http://linkedin.com/in/miconda -- http://twitter.com/miconda