31 Mar
2020
31 Mar
'20
7:14 p.m.
### Description
The commands available to extract dialog information `dlg.profile_list` and `dlg.list`
Are not fast enough to output a large amount of dialogs.
After doing some benchmark the time is spent in in `rpc->struct_add`, `rpc->add
etc`, etc.
it appears to be slowing down linearly.
### Possible Solutions
I made a quick POC to verify what I can get if I output to file instead and I got blazing
fast performance, this is good news since it means that iterating over the hash table etc.
is super fast.
https://github.com/jchavanton/kamailio/commit/f28c5a6b6364d79ee35acb5be439e…
```
dialog: outputing large amount of dialogs to file
Test:
1) injecting 100K dialogs with voip_perf
2) confirmation that we have 100K+ dialogs
kamcmd dlg.profile_get_size outbound_call
100879
3) execute the quickly hacked modifications to output to /tmp/dialogs.txt
kamctl rpc dlg.profile_list outbound_call
3.1) verify how long it took
2020-03-31T22:28:18.398916476Z 12(31) : dialog [dialog.c:2174]:
internal_rpc_profile_print_dlgs(): profile->lock
2020-03-31T22:28:18.554379411Z 12(31) : dialog [dialog.c:2190]:
internal_rpc_profile_print_dlgs(): profile->lock release
// command took less then 20ms
3.2) verify the content of the output
wc /tmp/dialogs.txt
124355 117324 20547037 /tmp/dialogs.txt
Note about the content
// not everything is outputed in this quick hack but we can imagine that the impact will
be very low.
call-id[uV.YzlhIZd1inE8SYDAlzmOLG12tYqVS]from[sip:voip_perf@147.75.65.247]to[sip:12060412757@52.42.112.21]h_entry[6207]h_id[44579]ref[2]contact[sip:voip_perf@147.75.65.247:5072;transport=udp]cseq[19528]
```
### Additional Information
I am thinking about adding commands to output to file in `json` and/or `csv`
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