[Devel] presence module -memory leak-

[Anca-Maria Vamanu]

Hi,

henri keski-sikkila wrote:

> Anca-Maria Vamanu wrote:
>
>> The memory leak problem was solved. Please update with the latest 
>> version on cvs.
>> Further testing and error reporting is much appreciated.
>
>
> Hello,
>
> I think that it's much better now. If I use only few UA there are many 
> active-watchers in database. Is it dialog in subscribe message that 
> says when active-watchers will be added to database? From time to time 
> presence module sents many notify message. Is it because same UA has 
> many active-watchers in database?
>
The active watchers table  stores  all the active subscriptions,  that 
is active dialogs.  A new record is inserted in database when a new 
Subscribe message arrives .For example, when  registering, a client 
sends one subscription for each contact in his contact list  and all 
this are stored .
This is the  time at which there is the most intense message trafic 
because each subscribe must be replied with a Notify message,  and on 
the other hand, all the active watchers for the newly registered client 
are notified of his state. I think that this is what might happen when 
you say that there are many Notify messages.
The other situations when Notify messages are sent are:
- when a user changes presence state - this triggers  sending 
notification for all active watchers
- when a subscription expires - it triggers a Notify with subscription 
state = terminated ; in some cases the user is already unregistered and 
therefore a
retransmition happens causing again an intense message flow.


Anca Vamanu

>
> Tasks:  21 total,   0 running,  21 sleeping,   0 stopped,   0 zombie
> Cpu(s):   0.3% user,   0.3% system,   0.0% nice,  99.3% idle
> Mem:    257108k total,   250252k used,     6856k free,    43500k buffers
> Swap:   393552k total,    45232k used,   348320k free,   128224k cached
>
>   PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND
>  8899 root       9   0  4112 4108 3992 S  0.0  1.6   0:00.08 openser
>  8900 root       9   0  4108 4104 3968 S  0.0  1.6   0:00.00 openser
>  8901 root       9   0  7592 7588 7244 S  0.0  3.0   0:02.34 openser
>  8902 root       9   0  6820 6816 6472 S  0.0  2.7   0:02.19 openser
>  8903 root       9   0  7084 7080 6740 S  0.0  2.8   0:02.63 openser
>  8904 root       9   0  7308 7304 6964 S  0.0  2.8   0:02.42 openser
>  8905 root       9   0  7724 7720 7380 S  0.0  3.0   0:02.44 openser
>  8906 root       9   0  7696 7692 7344 S  0.0  3.0   0:02.55 openser
>  8907 root       9   0  7780 7776 7432 S  0.0  3.0   0:02.07 openser
>  8908 root       9   0  7796 7792 7448 S  0.0  3.0   0:02.62 openser
>  8909 root      12   0  7636 7632 7304 S  0.0  3.0   0:21.97 openser
>  8910 root       9   0  4156 4152 3988 S  0.0  1.6   0:00.01 openser
>  8916 root       9   0  4160 4156 3992 S  0.0  1.6   0:00.00 openser
>  8917 root       9   0  4160 4156 3992 S  0.0  1.6   0:00.00 openser
>  8918 root       9   0  4160 4156 3992 S  0.0  1.6   0:00.00 openser
>  8925 root       9   0  4160 4156 3992 S  0.0  1.6   0:00.00 openser
>  8926 root       9   0  4160 4156 3992 S  0.0  1.6   0:00.00 openser
>  8927 root       9   0  4160 4156 3992 S  0.0  1.6   0:00.01 openser
>  8930 root       9   0  4160 4156 3992 S  0.0  1.6   0:00.00 openser
>  8931 root       9   0  4160 4156 3996 S  0.0  1.6   0:00.00 openser
>
> Best Regards,
> Henri Keski-Sikkila
>