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

[Sergio (JIRA)]

Sergio created ASTERISK-29138:
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             Summary: 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: 17.7.0, 16.3.0
         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


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.



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