[asterisk-bugs] [JIRA] (ASTERISK-29138) Asterisk doesn't process ACK on high CPS

[Sergio (JIRA)]

    [ https://issues.asterisk.org/jira/browse/ASTERISK-29138?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=252521#comment-252521 ] 

Sergio commented on ASTERISK-29138:
-----------------------------------

Joshua, you sir deserve a medal ;)
After looking at the tcpdump and DNS traffic I can confirm that was the issue.
After adding the hostname to the hosts file, I got to 10k calls with 100 cps on the first run.

Please let me know how did you find out it was DNS? Logs, backtrace, experience? Just asking to not bother with future issues ;)

Also while exploring limits of asterisk I ran into "FRACK!, Failed assertion Excessive refcount" is it appropriate to discuss this further here, or on the forums?

> Asterisk doesn't process ACK on high CPS
> ----------------------------------------
>
>                 Key: ASTERISK-29138
>                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-29138
>             Project: Asterisk
>          Issue Type: Bug
>      Security Level: None
>          Components: pjproject/pjsip
>    Affects Versions: 16.3.0, 17.7.0
>         Environment: CentOS 8 5.8.11-1.el8.elrepo.x86_64
> CentOS 8 4.18.0-193.19.1.el8_2.x86_64
> Ubuntu 5.4.0-51-generic #56-Ubuntu
> Ryzen 2700
> 2 x EPYC 7742
> 10 Gb/s LAN connection
> sipp SIPp v3.6.1-TLS-SCTP-PCAP-RTPSTREAM
> sipp command: sipp -s uac -rtp_echo -nr -trace_msg -trace_err -d 60s -r 75 -l 5000 -i 10.40.1.36 -p 5070 -s 505 10.40.1.58:5060
> Asterisk compiled with default configuration, only selected DONT_OPTIMIZE in menuselect.
>            Reporter: Sergio
>            Assignee: Sergio
>
> As explained here https://community.asterisk.org/t/pjsip-stack-resends-messages-on-high-cps/86102 on a bit higher load Asterisk seems to fail recognizing the ACK and resends 200 OK during call setup.
> I've attached the core dump, tcpdump, config files and sip/debug logs here https://drive.google.com/drive/folders/1qvg5nNFa32egMss_0SjFubgLaWUBuVmO?usp=sharing
> tcpdump was taken on the machine running asterisk to avoid network issues.
> Issue is consistent, and can be repeated easily.



--
This message was sent by Atlassian JIRA
(v6.2#6252)