[SR-Users] pv_buffer_size limit

[Daniel-Constantin Mierla]

Hello,

you have to allocate more private (pkg) memory via -M command line
parameter.

Maybe in the future there should be a change in evapi module not to use
the pv static buffer for its parameter, as I can see it has use cases
with large values.

Cheers,
Daniel

On 19.10.19 21:22, Sergiu Pojoga wrote:
> Hi ppl,
>
> I'm testing this external app (cgrates, you all know it) that talks to
> Kamailio via evapi. 
> Every /n/ minutes the app sends an evapi request to Kamailio which
> returns back the list of all dialogs like so:
>
> jsonrpc_exec('{"jsonrpc":"2.0","id":1, "method":"dlg.list","params":[]}');
> evapi_relay("{\"event\":\"CGR_DLG_LIST_REPLY\",
> \"jsonrpl_body\":$jsonrpl(body)}");
>
> The problem is that the size of /$jsonrpl(body)/ PV is limited by
> Kamailio's /pv_buffer_size/ setting.
>
> My math shows that a single dialog is about 1KiB of json data.
>
> *Problem*: Kamailio fails to start with a /pv_buffer_size /higher
> than 117 KiB (119808 bytes), which in turn rends the system's limit to
> about 117 simultaneous calls... pretty sad.
>
> Below find the error when trying to start Kamailio with higher values:
>
>  0(17080) ERROR: <core> [core/mem/q_malloc.c:291]: qm_find_free():
> qm_find_free(0x7f02275c5010, 120832); Free fragment not found!
>  0(17080) ERROR: <core> [core/mem/q_malloc.c:425]: qm_malloc():
> qm_malloc(0x7f02275c5010, 120832) called from core: core/pvapi.c:
> pv_init_buffer(2069), module: core; Free fragment not found!
>  0(17080) ERROR: <core> [core/pvapi.c:2072]: pv_init_buffer(): cannot
> init PV print buffer slot[39]
>
> Is there a workaround for this?
>
> Thanks,
> --Sergiu
>
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-- 
Daniel-Constantin Mierla -- www.asipto.com
www.twitter.com/miconda -- www.linkedin.com/in/miconda
Kamailio Advanced Training, Oct 21-23, 2019, Berlin, Germany -- https://asipto.com/u/kat

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