Fwd: pv_buffer_size config value actually ignored?

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Enrico Bandiera

13 Feb 2019 13 Feb '19

8:20 a.m.

---------- Forwarded message --------- From: Enrico Bandiera enrico.bandiera@cloud.timenet.it Date: mer 13 feb 2019 alle ore 09:18 Subject: Re: [SR-Users] pv_buffer_size config value actually ignored? To: Daniel-Constantin Mierla miconda@gmail.com

Hello Daniel, yes we do use that $avp for a log line which is actually a big json, the $avp is composed by multiple jansson_append calls and at the end an xlog() calls prints it Could it also be that I'm miscalculating because of the encoding? 4K utf8 characters could be more than 4K (but I don't think there are so many multibytes characters to let it reach the 8K limit)

Il giorno mer 13 feb 2019 alle ore 09:15 Daniel-Constantin Mierla < miconda@gmail.com> ha scritto:

...

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Daniel-Constantin Mierla

13 Feb 13 Feb

8:45 a.m.

New subject: Fwd: pv_buffer_size config value actually ignored?

Hello,

I pushed a patch to print more details about printed size, current token size and overall output buffer size in those error log messages -- the commit:

* https://github.com/kamailio/kamailio/commit/44e48809a608d4de46d61198137cd669...

Can you try with this patch and send again here on mailing list the error log messages?

Cheers, Daniel

On 13.02.19 09:20, Enrico Bandiera wrote:

...

---------- Forwarded message --------- From: *Enrico Bandiera* <enrico.bandiera@cloud.timenet.it mailto:enrico.bandiera@cloud.timenet.it> Date: mer 13 feb 2019 alle ore 09:18 Subject: Re: [SR-Users] pv_buffer_size config value actually ignored? To: Daniel-Constantin Mierla <miconda@gmail.com mailto:miconda@gmail.com>

Hello Daniel, yes we do use that $avp for a log line which is actually a big json, the $avp is composed by multiple jansson_append calls and at the end an xlog() calls prints it Could it also be that I'm miscalculating because of the encoding? 4K utf8 characters could be more than 4K (but I don't think there are so many multibytes characters to let it reach the 8K limit)

Il giorno mer 13 feb 2019 alle ore 09:15 Daniel-Constantin Mierla <miconda@gmail.com mailto:miconda@gmail.com> ha scritto:
Hello,

where do you use that avp, because for the avp value itself, that
buffer is not used -- avp values are stored in shared memory.

Do you use that avp in xlog() or other functions parameters?

Cheers,
Daniel

On 13.02.19 09:10, Enrico Bandiera wrote:
...
Hi, I'm having some strange issues with a somewhat big $avp
value, when it reaches a size of about 4K I get this error:

29(47) ERROR: <core> [core/pvapi.c:1452]: pv_printf(): no more
space for spec value
29(47) ERROR: <core> [core/pvapi.c:1461]: pv_printf(): buffer
overflow – increase the buffer size...

In the docs I read that the default pv_buffer_size is 8K, I still
tried to enforce it to something bigger and checked the logs to
be sure it was set:

0(384) DEBUG: <core> [core/pvapi.c:2062]: pv_init_buffer(): PV
print buffer initialized to [40][16384]

But still when reaching the 4K size inside the $avp that error
comes out, is there any limit I'm not aware of?

Thanks,
Enrico.

_______________________________________________
Kamailio (SER) - Users Mailing List
sr-users@lists.kamailio.org <mailto:sr-users@lists.kamailio.org>
https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users
-- 
Daniel-Constantin Mierla -- www.asipto.com <http://www.asipto.com>
www.twitter.com/miconda <http://www.twitter.com/miconda> -- www.linkedin.com/in/miconda <http://www.linkedin.com/in/miconda>
Kamailio World Conference - May 6-8, 2019 -- www.kamailioworld.com <http://www.kamailioworld.com>
Kamailio Advanced Training - Mar 4-6, 2019 in Berlin; Mar 25-27, 2019, in Washington, DC, USA -- www.asipto.com <http://www.asipto.com>
Kamailio (SER) - Users Mailing List sr-users@lists.kamailio.org https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users

-- Daniel-Constantin Mierla -- www.asipto.com www.twitter.com/miconda -- www.linkedin.com/in/miconda Kamailio World Conference - May 6-8, 2019 -- www.kamailioworld.com Kamailio Advanced Training - Mar 4-6, 2019 in Berlin; Mar 25-27, 2019, in Washington, DC, USA -- www.asipto.com

Enrico Bandiera

4:29 p.m.

New subject: Fwd: pv_buffer_size config value actually ignored?

Hello Daniel, here are the logs:

29(46) ERROR: <core> [core/pvapi.c:1457]: pv_printf(): no more space for spec value - printed:7 token:5131 buffer:4096 29(46) ERROR: <core> [core/pvapi.c:1467]: pv_printf(): buffer overflow -- increase the buffer size... 29(46) ERROR: <core> [core/pvapi.c:1457]: pv_printf(): no more space for spec value - printed:7 token:5129 buffer:4096 29(46) ERROR: <core> [core/pvapi.c:1467]: pv_printf(): buffer overflow -- increase the buffer size...

Thanks, Enrico

Il giorno mer 13 feb 2019 alle ore 09:45 Daniel-Constantin Mierla < miconda@gmail.com> ha scritto:

...

Hello,

I pushed a patch to print more details about printed size, current token size and overall output buffer size in those error log messages -- the commit:

https://github.com/kamailio/kamailio/commit/44e48809a608d4de46d61198137cd669...

Can you try with this patch and send again here on mailing list the error log messages?

Cheers, Daniel On 13.02.19 09:20, Enrico Bandiera wrote:

---------- Forwarded message --------- From: Enrico Bandiera enrico.bandiera@cloud.timenet.it Date: mer 13 feb 2019 alle ore 09:18 Subject: Re: [SR-Users] pv_buffer_size config value actually ignored? To: Daniel-Constantin Mierla miconda@gmail.com

Hello Daniel, yes we do use that $avp for a log line which is actually a big json, the $avp is composed by multiple jansson_append calls and at the end an xlog() calls prints it Could it also be that I'm miscalculating because of the encoding? 4K utf8 characters could be more than 4K (but I don't think there are so many multibytes characters to let it reach the 8K limit)

Il giorno mer 13 feb 2019 alle ore 09:15 Daniel-Constantin Mierla < miconda@gmail.com> ha scritto:

...
Hello,

where do you use that avp, because for the avp value itself, that buffer is not used -- avp values are stored in shared memory.

Do you use that avp in xlog() or other functions parameters?

Cheers, Daniel On 13.02.19 09:10, Enrico Bandiera wrote:

Hi, I'm having some strange issues with a somewhat big $avp value, when it reaches a size of about 4K I get this error:

29(47) ERROR: <core> [core/pvapi.c:1452]: pv_printf(): no more space for spec value 29(47) ERROR: <core> [core/pvapi.c:1461]: pv_printf(): buffer overflow – increase the buffer size...

In the docs I read that the default pv_buffer_size is 8K, I still tried to enforce it to something bigger and checked the logs to be sure it was set:

0(384) DEBUG: <core> [core/pvapi.c:2062]: pv_init_buffer(): PV print buffer initialized to [40][16384]

But still when reaching the 4K size inside the $avp that error comes out, is there any limit I'm not aware of?

Thanks, Enrico.

Kamailio (SER) - Users Mailing Listsr-users@lists.kamailio.orghttps://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users

-- Daniel-Constantin Mierla -- www.asipto.comwww.twitter.com/miconda -- www.linkedin.com/in/miconda Kamailio World Conference - May 6-8, 2019 -- www.kamailioworld.com Kamailio Advanced Training - Mar 4-6, 2019 in Berlin; Mar 25-27, 2019, in Washington, DC, USA -- www.asipto.com

Kamailio (SER) - Users Mailing Listsr-users@lists.kamailio.orghttps://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users

-- Daniel-Constantin Mierla -- www.asipto.comwww.twitter.com/miconda -- www.linkedin.com/in/miconda Kamailio World Conference - May 6-8, 2019 -- www.kamailioworld.com Kamailio Advanced Training - Mar 4-6, 2019 in Berlin; Mar 25-27, 2019, in Washington, DC, USA -- www.asipto.com

Enrico Bandiera

8:36 p.m.

New subject: Fwd: pv_buffer_size config value actually ignored?

Hi, could it be caused by this?

https://github.com/kamailio/kamailio/blob/master/src/modules/xlog/xlog.c#L65

I tried to increment it, recompiled kamailio and the error doesn't show up anymore

Thanks, Enrico

Il giorno mer 13 feb 2019 alle ore 17:29 Enrico Bandiera < enrico.bandiera@cloud.timenet.it> ha scritto:

...

Hello Daniel, here are the logs:

29(46) ERROR: <core> [core/pvapi.c:1457]: pv_printf(): no more space for spec value - printed:7 token:5131 buffer:4096 29(46) ERROR: <core> [core/pvapi.c:1467]: pv_printf(): buffer overflow -- increase the buffer size... 29(46) ERROR: <core> [core/pvapi.c:1457]: pv_printf(): no more space for spec value - printed:7 token:5129 buffer:4096 29(46) ERROR: <core> [core/pvapi.c:1467]: pv_printf(): buffer overflow -- increase the buffer size...

Thanks, Enrico

Il giorno mer 13 feb 2019 alle ore 09:45 Daniel-Constantin Mierla < miconda@gmail.com> ha scritto:

...
Hello,

I pushed a patch to print more details about printed size, current token size and overall output buffer size in those error log messages -- the commit:

https://github.com/kamailio/kamailio/commit/44e48809a608d4de46d61198137cd669...

Can you try with this patch and send again here on mailing list the error log messages?

Cheers, Daniel On 13.02.19 09:20, Enrico Bandiera wrote:

---------- Forwarded message --------- From: Enrico Bandiera enrico.bandiera@cloud.timenet.it Date: mer 13 feb 2019 alle ore 09:18 Subject: Re: [SR-Users] pv_buffer_size config value actually ignored? To: Daniel-Constantin Mierla miconda@gmail.com

Hello Daniel, yes we do use that $avp for a log line which is actually a big json, the $avp is composed by multiple jansson_append calls and at the end an xlog() calls prints it Could it also be that I'm miscalculating because of the encoding? 4K utf8 characters could be more than 4K (but I don't think there are so many multibytes characters to let it reach the 8K limit)

Il giorno mer 13 feb 2019 alle ore 09:15 Daniel-Constantin Mierla < miconda@gmail.com> ha scritto:

...
Hello,

where do you use that avp, because for the avp value itself, that buffer is not used -- avp values are stored in shared memory.

Do you use that avp in xlog() or other functions parameters?

Cheers, Daniel On 13.02.19 09:10, Enrico Bandiera wrote:

Hi, I'm having some strange issues with a somewhat big $avp value, when it reaches a size of about 4K I get this error:

29(47) ERROR: <core> [core/pvapi.c:1452]: pv_printf(): no more space for spec value 29(47) ERROR: <core> [core/pvapi.c:1461]: pv_printf(): buffer overflow – increase the buffer size...

In the docs I read that the default pv_buffer_size is 8K, I still tried to enforce it to something bigger and checked the logs to be sure it was set:

0(384) DEBUG: <core> [core/pvapi.c:2062]: pv_init_buffer(): PV print buffer initialized to [40][16384]

But still when reaching the 4K size inside the $avp that error comes out, is there any limit I'm not aware of?

Thanks, Enrico.

Kamailio (SER) - Users Mailing Listsr-users@lists.kamailio.orghttps://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users

-- Daniel-Constantin Mierla -- www.asipto.comwww.twitter.com/miconda -- www.linkedin.com/in/miconda Kamailio World Conference - May 6-8, 2019 -- www.kamailioworld.com Kamailio Advanced Training - Mar 4-6, 2019 in Berlin; Mar 25-27, 2019, in Washington, DC, USA -- www.asipto.com

Kamailio (SER) - Users Mailing Listsr-users@lists.kamailio.orghttps://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users

-- Daniel-Constantin Mierla -- www.asipto.comwww.twitter.com/miconda -- www.linkedin.com/in/miconda Kamailio World Conference - May 6-8, 2019 -- www.kamailioworld.com Kamailio Advanced Training - Mar 4-6, 2019 in Berlin; Mar 25-27, 2019, in Washington, DC, USA -- www.asipto.com

Daniel-Constantin Mierla

9:18 p.m.

New subject: Fwd: pv_buffer_size config value actually ignored?

Hello,

you actually need to set the modparam for it:

- https://www.kamailio.org/docs/modules/stable/modules/xlog.html#xlog.p.buf_si...

xlog module is using its own buffer, not the one from pv core file.

Cheers, Daniel

On 13.02.19 21:36, Enrico Bandiera wrote:

...

Hi, could it be caused by this?

https://github.com/kamailio/kamailio/blob/master/src/modules/xlog/xlog.c#L65

I tried to increment it, recompiled kamailio and the error doesn't show up anymore

Thanks, Enrico

Il giorno mer 13 feb 2019 alle ore 17:29 Enrico Bandiera <enrico.bandiera@cloud.timenet.it mailto:enrico.bandiera@cloud.timenet.it> ha scritto:

Hello Daniel, here are the logs:

29(46) ERROR: <core> [core/pvapi.c:1457]: pv_printf(): no more
space for spec value - printed:7 token:5131 buffer:4096
29(46) ERROR: <core> [core/pvapi.c:1467]: pv_printf(): buffer
overflow -- increase the buffer size...
29(46) ERROR: <core> [core/pvapi.c:1457]: pv_printf(): no more
space for spec value - printed:7 token:5129 buffer:4096
29(46) ERROR: <core> [core/pvapi.c:1467]: pv_printf(): buffer
overflow -- increase the buffer size...

Thanks,
Enrico


Il giorno mer 13 feb 2019 alle ore 09:45 Daniel-Constantin Mierla
<miconda@gmail.com <mailto:miconda@gmail.com>> ha scritto:

    Hello,

    I pushed a patch to print more details about printed size,
    current token size and overall output buffer size in those
    error log messages -- the commit:

      *
    https://github.com/kamailio/kamailio/commit/44e48809a608d4de46d61198137cd669c6a4763f

    Can you try with this patch and send again here on mailing
    list the error log messages?

    Cheers,
    Daniel

    On 13.02.19 09:20, Enrico Bandiera wrote:

...

    ---------- Forwarded message ---------
    From: *Enrico Bandiera* <enrico.bandiera@cloud.timenet.it
    <mailto:enrico.bandiera@cloud.timenet.it>>
    Date: mer 13 feb 2019 alle ore 09:18
    Subject: Re: [SR-Users] pv_buffer_size config value actually
    ignored?
    To: Daniel-Constantin Mierla <miconda@gmail.com
    <mailto:miconda@gmail.com>>


    Hello Daniel, yes we do use that $avp for a log line which is
    actually a big json, the $avp is composed by
    multiple jansson_append calls and at the end an xlog() calls
    prints it
    Could it also be that I'm miscalculating because of the
    encoding? 4K utf8 characters could be more than 4K (but I
    don't think there are so many multibytes characters to let it
    reach the 8K limit)

    Il giorno mer 13 feb 2019 alle ore 09:15 Daniel-Constantin
    Mierla <miconda@gmail.com <mailto:miconda@gmail.com>> ha scritto:

        Hello,

        where do you use that avp, because for the avp value
        itself, that buffer is not used -- avp values are stored
        in shared memory.

        Do you use that avp in xlog() or other functions parameters?

        Cheers,
        Daniel

        On 13.02.19 09:10, Enrico Bandiera wrote:

...

        Hi, I'm having some strange issues with a somewhat big
        $avp value, when it reaches a size of about 4K I get
        this error:

        29(47) ERROR: <core> [core/pvapi.c:1452]: pv_printf():
        no more space for spec value
        29(47) ERROR: <core> [core/pvapi.c:1461]: pv_printf():
        buffer overflow – increase the buffer size...

        In the docs I read that the default pv_buffer_size is
        8K, I still tried to enforce it to something bigger and
        checked the logs to be sure it was set:

        0(384) DEBUG: <core> [core/pvapi.c:2062]:
        pv_init_buffer(): PV print buffer initialized to [40][16384]

        But still when reaching the 4K size inside the $avp that
        error comes out, is there any limit I'm not aware of?

        Thanks,
        Enrico.

        _______________________________________________
        Kamailio (SER) - Users Mailing List
        sr-users@lists.kamailio.org <mailto:sr-users@lists.kamailio.org>
        https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users

        -- 
        Daniel-Constantin Mierla -- www.asipto.com <http://www.asipto.com>
        www.twitter.com/miconda <http://www.twitter.com/miconda> -- www.linkedin.com/in/miconda <http://www.linkedin.com/in/miconda>
        Kamailio World Conference - May 6-8, 2019 -- www.kamailioworld.com <http://www.kamailioworld.com>
        Kamailio Advanced Training - Mar 4-6, 2019 in Berlin; Mar 25-27, 2019, in Washington, DC, USA -- www.asipto.com <http://www.asipto.com>


    _______________________________________________
    Kamailio (SER) - Users Mailing List
    sr-users@lists.kamailio.org <mailto:sr-users@lists.kamailio.org>
    https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users

    -- 
    Daniel-Constantin Mierla -- www.asipto.com <http://www.asipto.com>
    www.twitter.com/miconda <http://www.twitter.com/miconda> -- www.linkedin.com/in/miconda <http://www.linkedin.com/in/miconda>
    Kamailio World Conference - May 6-8, 2019 -- www.kamailioworld.com <http://www.kamailioworld.com>
    Kamailio Advanced Training - Mar 4-6, 2019 in Berlin; Mar 25-27, 2019, in Washington, DC, USA -- www.asipto.com <http://www.asipto.com>

Enrico Bandiera

14 Feb 14 Feb

8 a.m.

New subject: Fwd: pv_buffer_size config value actually ignored?

Thank you Daniel, setting it to 8192 solved the issue.

Cheers, Enrico.

Il giorno mer 13 feb 2019 alle ore 22:18 Daniel-Constantin Mierla < miconda@gmail.com> ha scritto:

...

Hello,

you actually need to set the modparam for it:

https://www.kamailio.org/docs/modules/stable/modules/xlog.html#xlog.p.buf_si...

xlog module is using its own buffer, not the one from pv core file.

Cheers, Daniel On 13.02.19 21:36, Enrico Bandiera wrote:

Hi, could it be caused by this?

https://github.com/kamailio/kamailio/blob/master/src/modules/xlog/xlog.c#L65

I tried to increment it, recompiled kamailio and the error doesn't show up anymore

Thanks, Enrico

Il giorno mer 13 feb 2019 alle ore 17:29 Enrico Bandiera < enrico.bandiera@cloud.timenet.it> ha scritto:

...
Hello Daniel, here are the logs:

29(46) ERROR: <core> [core/pvapi.c:1457]: pv_printf(): no more space for spec value - printed:7 token:5131 buffer:4096 29(46) ERROR: <core> [core/pvapi.c:1467]: pv_printf(): buffer overflow -- increase the buffer size... 29(46) ERROR: <core> [core/pvapi.c:1457]: pv_printf(): no more space for spec value - printed:7 token:5129 buffer:4096 29(46) ERROR: <core> [core/pvapi.c:1467]: pv_printf(): buffer overflow -- increase the buffer size...

Thanks, Enrico

Il giorno mer 13 feb 2019 alle ore 09:45 Daniel-Constantin Mierla < miconda@gmail.com> ha scritto:

...
Hello,

I pushed a patch to print more details about printed size, current token size and overall output buffer size in those error log messages -- the commit:

https://github.com/kamailio/kamailio/commit/44e48809a608d4de46d61198137cd669...

Can you try with this patch and send again here on mailing list the error log messages?

Cheers, Daniel On 13.02.19 09:20, Enrico Bandiera wrote:

---------- Forwarded message --------- From: Enrico Bandiera enrico.bandiera@cloud.timenet.it Date: mer 13 feb 2019 alle ore 09:18 Subject: Re: [SR-Users] pv_buffer_size config value actually ignored? To: Daniel-Constantin Mierla miconda@gmail.com

Hello Daniel, yes we do use that $avp for a log line which is actually a big json, the $avp is composed by multiple jansson_append calls and at the end an xlog() calls prints it Could it also be that I'm miscalculating because of the encoding? 4K utf8 characters could be more than 4K (but I don't think there are so many multibytes characters to let it reach the 8K limit)

Il giorno mer 13 feb 2019 alle ore 09:15 Daniel-Constantin Mierla < miconda@gmail.com> ha scritto:

...
Hello,

where do you use that avp, because for the avp value itself, that buffer is not used -- avp values are stored in shared memory.

Do you use that avp in xlog() or other functions parameters?

Cheers, Daniel On 13.02.19 09:10, Enrico Bandiera wrote:

Hi, I'm having some strange issues with a somewhat big $avp value, when it reaches a size of about 4K I get this error:

29(47) ERROR: <core> [core/pvapi.c:1452]: pv_printf(): no more space for spec value 29(47) ERROR: <core> [core/pvapi.c:1461]: pv_printf(): buffer overflow – increase the buffer size...

In the docs I read that the default pv_buffer_size is 8K, I still tried to enforce it to something bigger and checked the logs to be sure it was set:

0(384) DEBUG: <core> [core/pvapi.c:2062]: pv_init_buffer(): PV print buffer initialized to [40][16384]

But still when reaching the 4K size inside the $avp that error comes out, is there any limit I'm not aware of?

Thanks, Enrico.

Kamailio (SER) - Users Mailing Listsr-users@lists.kamailio.orghttps://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users

-- Daniel-Constantin Mierla -- www.asipto.comwww.twitter.com/miconda -- www.linkedin.com/in/miconda Kamailio World Conference - May 6-8, 2019 -- www.kamailioworld.com Kamailio Advanced Training - Mar 4-6, 2019 in Berlin; Mar 25-27, 2019, in Washington, DC, USA -- www.asipto.com

Kamailio (SER) - Users Mailing Listsr-users@lists.kamailio.orghttps://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users

-- Daniel-Constantin Mierla -- www.asipto.comwww.twitter.com/miconda -- www.linkedin.com/in/miconda Kamailio World Conference - May 6-8, 2019 -- www.kamailioworld.com Kamailio Advanced Training - Mar 4-6, 2019 in Berlin; Mar 25-27, 2019, in Washington, DC, USA -- www.asipto.com

--

Daniel-Constantin Mierla -- www.asipto.comwww.twitter.com/miconda -- www.linkedin.com/in/miconda Kamailio World Conference - May 6-8, 2019 -- www.kamailioworld.com Kamailio Advanced Training - Mar 4-6, 2019 in Berlin; Mar 25-27, 2019, in Washington, DC, USA -- www.asipto.com

Daniel-Constantin Mierla

2:48 p.m.

New subject: Fwd: pv_buffer_size config value actually ignored?

OK - probably we should add in the wiki at pv_buffer_size a note to say that for xlog messages, there is a dedicated modparam to set the internal buffer size.

Cheers, Daniel

On 14.02.19 09:00, Enrico Bandiera wrote:

...

Thank you Daniel, setting it to 8192 solved the issue.

Cheers, Enrico.

Il giorno mer 13 feb 2019 alle ore 22:18 Daniel-Constantin Mierla <miconda@gmail.com mailto:miconda@gmail.com> ha scritto:

Hello,

you actually need to set the modparam for it:

  -
https://www.kamailio.org/docs/modules/stable/modules/xlog.html#xlog.p.buf_size

xlog module is using its own buffer, not the one from pv core file.

Cheers,
Daniel

On 13.02.19 21:36, Enrico Bandiera wrote:

...

Hi, could it be caused by this?

https://github.com/kamailio/kamailio/blob/master/src/modules/xlog/xlog.c#L65

I tried to increment it, recompiled kamailio and the error
doesn't show up anymore

Thanks,
Enrico



Il giorno mer 13 feb 2019 alle ore 17:29 Enrico Bandiera
<enrico.bandiera@cloud.timenet.it
<mailto:enrico.bandiera@cloud.timenet.it>> ha scritto:

    Hello Daniel, here are the logs:

    29(46) ERROR: <core> [core/pvapi.c:1457]: pv_printf(): no
    more space for spec value - printed:7 token:5131 buffer:4096
    29(46) ERROR: <core> [core/pvapi.c:1467]: pv_printf(): buffer
    overflow -- increase the buffer size...
    29(46) ERROR: <core> [core/pvapi.c:1457]: pv_printf(): no
    more space for spec value - printed:7 token:5129 buffer:4096
    29(46) ERROR: <core> [core/pvapi.c:1467]: pv_printf(): buffer
    overflow -- increase the buffer size...

    Thanks,
    Enrico


    Il giorno mer 13 feb 2019 alle ore 09:45 Daniel-Constantin
    Mierla <miconda@gmail.com <mailto:miconda@gmail.com>> ha scritto:

        Hello,

        I pushed a patch to print more details about printed
        size, current token size and overall output buffer size
        in those error log messages -- the commit:

          *
        https://github.com/kamailio/kamailio/commit/44e48809a608d4de46d61198137cd669c6a4763f

        Can you try with this patch and send again here on
        mailing list the error log messages?

        Cheers,
        Daniel

        On 13.02.19 09:20, Enrico Bandiera wrote:

...

        ---------- Forwarded message ---------
        From: *Enrico Bandiera*
        <enrico.bandiera@cloud.timenet.it
        <mailto:enrico.bandiera@cloud.timenet.it>>
        Date: mer 13 feb 2019 alle ore 09:18
        Subject: Re: [SR-Users] pv_buffer_size config value
        actually ignored?
        To: Daniel-Constantin Mierla <miconda@gmail.com
        <mailto:miconda@gmail.com>>


        Hello Daniel, yes we do use that $avp for a log line
        which is actually a big json, the $avp is composed by
        multiple jansson_append calls and at the end an xlog()
        calls prints it
        Could it also be that I'm miscalculating because of the
        encoding? 4K utf8 characters could be more than 4K (but
        I don't think there are so many multibytes characters to
        let it reach the 8K limit)

        Il giorno mer 13 feb 2019 alle ore 09:15
        Daniel-Constantin Mierla <miconda@gmail.com
        <mailto:miconda@gmail.com>> ha scritto:

            Hello,

            where do you use that avp, because for the avp value
            itself, that buffer is not used -- avp values are
            stored in shared memory.

            Do you use that avp in xlog() or other functions
            parameters?

            Cheers,
            Daniel

            On 13.02.19 09:10, Enrico Bandiera wrote:

...

            Hi, I'm having some strange issues with a somewhat
            big $avp value, when it reaches a size of about 4K
            I get this error:

            29(47) ERROR: <core> [core/pvapi.c:1452]:
            pv_printf(): no more space for spec value
            29(47) ERROR: <core> [core/pvapi.c:1461]:
            pv_printf(): buffer overflow – increase the buffer
            size...

            In the docs I read that the default pv_buffer_size
            is 8K, I still tried to enforce it to something
            bigger and checked the logs to be sure it was set:

            0(384) DEBUG: <core> [core/pvapi.c:2062]:
            pv_init_buffer(): PV print buffer initialized to
            [40][16384]

            But still when reaching the 4K size inside the $avp
            that error comes out, is there any limit I'm not
            aware of?

            Thanks,
            Enrico.

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        -- 
        Daniel-Constantin Mierla -- www.asipto.com <http://www.asipto.com>
        www.twitter.com/miconda <http://www.twitter.com/miconda> -- www.linkedin.com/in/miconda <http://www.linkedin.com/in/miconda>
        Kamailio World Conference - May 6-8, 2019 -- www.kamailioworld.com <http://www.kamailioworld.com>
        Kamailio Advanced Training - Mar 4-6, 2019 in Berlin; Mar 25-27, 2019, in Washington, DC, USA -- www.asipto.com <http://www.asipto.com>

-- 
Daniel-Constantin Mierla -- www.asipto.com <http://www.asipto.com>
www.twitter.com/miconda <http://www.twitter.com/miconda> -- www.linkedin.com/in/miconda <http://www.linkedin.com/in/miconda>
Kamailio World Conference - May 6-8, 2019 -- www.kamailioworld.com <http://www.kamailioworld.com>
Kamailio Advanced Training - Mar 4-6, 2019 in Berlin; Mar 25-27, 2019, in Washington, DC, USA -- www.asipto.com <http://www.asipto.com>

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Daniel-Constantin Mierla
Enrico Bandiera