Re: [SR-Users] FW: Regd. t_suspend() and t_continue() - sr-users

21 Jan 2014

We use it heavily, but not using the async module - we use it directly from
the IMS code.

Can you please provide your config (or a relevant snippet) file so I can
see what exactly you are testing/trying to do

Cheers
jason

On Tue, Jan 21, 2014 at 10:54 AM, Shankar &lt;shankar.rk(a)plintron.com&gt; wrote:

...
  Hi,

 Anyone who had used t_suspend() and t_continue() can share the performance
 details?

 I tried async module with one sec sleep time. I tried only 5 calls per
 second but still it was not successful. After sometime I see below logs,

 Jan 21 13:51:55 PLT-RA-RD-W167A PCscf[16520]: ERROR: tm [t_suspend.c:128]:
 t_continue(): ERROR: t_continue: transaction not found

 Jan 21 13:52:49 PLT-RA-RD-W167A last message repeated 15 times

 Jan 21 13:59:38 PLT-RA-RD-W167A last message repeated 12 times

 Jan 21 14:13:03 PLT-RA-RD-W167A last message repeated 5 times

 Any configuration changes can help here?

 Regards,

 Shankar

 *From:* Shankar [mailto:shankar.rk@plintron.com]
 *Sent:* Wednesday, January 15, 2014 1:26 PM
 *To:* 'Jason Penton'

 *Cc:* 'SIP Router - Kamailio (OpenSER) and SIP Express Router (SER) -
 Users Mailing List'
 *Subject:* RE: [SR-Users] FW: Regd. t_suspend() and t_continue()

 Hi Jason,

 I am using 4.0.2

 Regards,

 Shankar

 *From:* Jason Penton
[mailto:jason.penton@smilecoms.com<jason.penton@smilecoms.com>]

 *Sent:* Wednesday, January 15, 2014 1:21 PM
 *To:* Shankar
 *Cc:* SIP Router - Kamailio (OpenSER) and SIP Express Router (SER) -
 Users Mailing List
 *Subject:* Re: [SR-Users] FW: Regd. t_suspend() and t_continue()

 Hi Shankar,

 What version of Kamailio are you running? Kamailio -V

 Cheers

 Jason

 On Wed, Jan 15, 2014 at 6:58 AM, Shankar &lt;shankar.rk(a)plintron.com&gt; wrote:

 Hi Jason,

 Please find below my response inline,

 I have some questions for you as we have used suspend/continue quite a lot
 in the IMS code and don't have any leaks.

 Firstly, why are you using pkg_mem for your hash_id and label? Remember
 that you will be in 2 different processes in the suspend and continue
 portions of the code... so pkg_mem will not work - you should use shm_mem
 instead.

 [Shankar] We use pkg_mem because we are invoking t_continue from the same
 process ( using thread ).

 Secondly, how are you using top to tell that you have a leak? Kamailio's
 memory is internally managed.

 [Shankar] After running for say 20minutes, we get out of shared memory
 error. Also in top output we observed incremental increase in the shared
 usage of shared memory for the process.

 Cheers

 Jason

 On Mon, Jan 13, 2014 at 1:29 PM, Shankar &lt;shankar.rk(a)plintron.com&gt; wrote:

  Re-sending without the attachment. 

  *From:* Shankar
[mailto:shankar.rk@plintron.com<shankar.rk@plintron.com>  ]

  *Sent:* Monday, January 13, 2014 4:57 PM 
  *To:* &#39;sr-users(a)lists.sip-router.org&#39;

  *Subject:* Regd. t_suspend() and t_continue()

  Hi, 

  We are trying out the t_suspend() and
t_continue() in our test setup. 
  We are facing memory leak ( both shm and pkg as
per top command results). 

  Please find below the scenario, 

  1)      Do a t_newtran() 

  2)      Allocate pkg memory for hashid and label.

  3)      Call t_suspend() 

  4)      Do t_continue() when async result is
available 

  5)      De-allocate pkg memory reserved for
hashid and label 

  6)      Do a t_relay() which forwards the sip
message to another sip  node.

  In the  step (6) above, we see t_newtran()
allocates one more time 
  shared memory for the same transaction. 

  We tried t_release() after step (4) to release
the transaction as 
  t_relay() anyways allocates new shared memory.
Nothing helped. 

  Please let me know what are the logs you would
require to debug the same. 
  I am attaching syslog for this run. 

  Regards, 

  Shankar 

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