[SR-Users] pv_buffer_size limit

[Sergiu Pojoga]

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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