Hi, Mickael!

This is not entirely true - you can define AVPs with the integer value 0. Those will have avp->flags == 0 and avp->data == 0. What I'd do, is to note down the avp->id value of those AVPs and then try to see their names. To do that, you'd have to look into the avp_map and avp_map_shm maps to see the corresponding name for that id. Alternatively you can call in your script the avp_print() method, which prints all the AVPs for a specific transaction along with their id and names. Let me know how this goes.

Best regards,

Răzvan Crainea
OpenSIPS Solutions
www.opensips-solutions.com

On 06/18/2015 12:48 PM, Mickael Marrache wrote:
To add more information, I remember there was no way to define an integer AVP with value 0. I see a lot of such AVPs.

On Thu, Jun 18, 2015 at 12:03 PM, Mickael Marrache <[email protected] <mailto:[email protected]>> wrote:

    Correction of my previous email.

    When I said I found AVPs without data, I may be wrong. avp->flags
    == 0 probably means the AVP data is an integer. So, that explains
    the weird values (e.g. 0x8000) I tried to interpret as memory
    addresses.

    Mickael

    On Thu, Jun 18, 2015 at 11:12 AM, Mickael Marrache
    <[email protected] <mailto:[email protected]>> wrote:

        Hi Razvan,

        Here is what I've done.

        I took a core dump of the attendant process. Then, I stopped
        OpenSIPS so that it frees allocated fragments, and at the end
        lists all fragments that are still allocated.

        In this list of fragments, I can see a lot of AVPs.

        I see some AVPs without data (avp->data == NULL, avp->flags ==
        0). But something is weird, it looks like that all AVPs that
        don't have data have the same id. It looks like duplicate AVPs
        (in different memory fragments).

        Some AVPs do have data and have a format that looks valid.

        Some AVPs looks corrupted. For example, I found an AVP with
        same ID as the AVPs without data, but avp->data == 0x8000
        which looks completely wrong.

        Thanks,
        Mickael

        On Thu, Jun 18, 2015 at 10:11 AM, Mickael Marrache
        <[email protected] <mailto:[email protected]>>
        wrote:

            Hi Razvan,

            I created a core dump for the attendant process. Is it
            enough or we also need core dumps for other processes?
            Note that the leak appears in shared memory.

            We do use QM debug for this version, this is how I
            discovered the remaining AVPs at shutdown where the
            remaining allocated memory fragments are listed.

            Do you know where I should look for the AVPs in the core dump?

            Thanks,
            Mickael

            On Tue, Jun 16, 2015 at 5:11 PM, Răzvan Crainea
            <[email protected] <mailto:[email protected]>> wrote:

                Hi, Mickael!

                I don't know what exactly might cause the leak. What
                you can do is to try to get a core dump (using tools
                like gcore) during low (or unexisting) traffic and try
                to see what do the AVPs that are leaking contain. Are
                you using QM debug?

                Best regards,

                Răzvan Crainea
                OpenSIPS Solutions
                www.opensips-solutions.com
                <http://www.opensips-solutions.com>

                On 05/27/2015 12:37 PM, Mickael Marrache wrote:
                Any idea? Is there something that may help finding
                the leak cause?

                On Tue, May 19, 2015 at 1:17 PM, Mickael Marrache
                <[email protected]
                <mailto:[email protected]>> wrote:

                    Any idea what we should do?

                    I may be doing something wrong but I don't
                    remember I had to take care of memory management
                    when dealing with AVPs.

                    Am I right?

                    On Mon, May 18, 2015 at 12:08 PM, Mickael
                    Marrache <[email protected]
                    <mailto:[email protected]>> wrote:

                        Hi,

                        We use customized sources based on 1.11.2.

                        However, we never modified the sources
                        related to AVP.

                        Mickael

                        On Mon, May 18, 2015 at 12:03 PM,
                        Bogdan-Andrei Iancu <[email protected]
                        <mailto:[email protected]>> wrote:

                            Hi Mickael,

                            If you do not have any SIP message or
                            transaction under processing, and still
                            have AVPs in memory....well, it looks
                            like a leak to me.

                            What OpenSIPS version do you have ?

                            Regards,

                            Bogdan-Andrei Iancu
                            OpenSIPS Founder and Developer
                            http://www.opensips-solutions.com

                            On 17.05.2015 11:55, Mickael Marrache wrote:
                            Hi,

                            Here is what I've done:

                            1) Ensured OpenSIPS doesn't receive any
                            calls.
                            2) Waited for all calls to terminate.
                            3) Checked that the inuse_transaction is 0.
                            4) Stopped OpenSIPS.

                            I confirm there are still a lot of AVPs
                            in memory.

                            Who is supposed to free these AVPs? Is
                            it a memory leak?

                            Thanks,
                            Mickael

                            On Fri, May 15, 2015 at 12:48 PM,
                            Bogdan-Andrei Iancu <[email protected]
                            <mailto:[email protected]>> wrote:

                                Hi Michael,

                                You can do "opensipsctl fifo
                                get_statistics tm:" and you have the
                                "inuse_transaction" statistic :
                                
http://www.opensips.org/html/docs/modules/1.11.x/tm.html#id296307

                                Regards,

                                Bogdan-Andrei Iancu
                                OpenSIPS Founder and Developer
                                http://www.opensips-solutions.com

                                On 14.05.2015 09:45, Mickael
                                Marrache wrote:

                                I'm not sure there were no
                                transactions in memory at shutdown.

                                How can I check this? I didn't find
                                an MI command for that.

                                *From:*Bogdan-Andrei Iancu
                                [mailto:[email protected]]
                                *Sent:* Wednesday, May 13, 2015 6:44 PM
                                *To:* OpenSIPS users mailling list;
                                [email protected]
                                <mailto:[email protected]>
                                *Subject:* Re: [OpenSIPS-Users]
                                Possible memory leak related to AVPs

                                Hi Mickael,

                                What means "a lot"  :) ? I'm asking
                                as if you have 100 transactions in
                                memory (when doing shutdown) and
                                you use ~10 AVPs per INVITE in
                                script -> you have 1000 AVPs in mem.

                                When doing the shutdown, are any
                                transaction in memory ? (with no
                                active transactions in mem, there
                                are no AVPs in mem).

                                Regards,

                                Bogdan-Andrei Iancu
                                OpenSIPS Founder and Developer
                                http://www.opensips-solutions.com

                                On 13.05.2015 17:53, Mickael
                                Marrache wrote:

                                    Hi,

                                    We have a memory leak and are
                                    trying to find the cause.

                                    We compiled the call with
                                    memory debugging and at
                                    shutdown, we see a lot of
                                    allocated AVPs that are not
                                    released.

                                    opensips[27560]: 277067. N
                                    address=0x2aae957a0330
                                    frag=0x2aae957a0300 size=24 used=1

                                    opensips[27560]: alloc'd from
                                    usr_avp.c: new_avp(119)

                                    opensips[27560]: start
                                    check=f0f0f0f0f0f0f0f0, end
                                    check= c0c0c0c0c0c0c0c0,
                                    abcdefedabcdefed

                                    Is it possible to have a memory
                                    leak related to AVPs? IIRC
                                    OpenSIPS handles it internally.

                                    Thanks,

                                    Mickael




                                    
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