[SR-Users] xlog issue

Hello, I have a strange situation by using xlog module. I don't know for what reason I'm not receiving all logs generated by kamailio. This is the configuration which I'm using in kamailio.cfg: log_facility=LOG_LOCAL0 log_name="kamailio" log_prefix="{$rm ($mt) | Seq=$cs | Source IP=$si ($proto) | Call ID=$ci} " # ----- xlog ----- modparam("xlog", "buf_size", 8192) modparam("xlog", "long_format", 0) modparam("xlog", "force_color", 1) modparam("xlog", "log_colors", "L_ERR=cr;L_WARN=px,L_INFO=px") This is rsyslog configuration file: local0.*             /var/log/kamailio/kamailio.log Kamailio is running under kamailio user, permission for the log file are as shown below: -rwxrwxr-x 1 kamailio kamailio 252885132 Dec  2 14:51 /var/log/kamailio/kamailio.log In request_route block this is the first line: xlog("L_INFO","[START ROUTING]-(Source IP=$si:$sp/Destination IP=$Ri:$Rp)\n"); The problem is that not every request is logged in the log-file. For example, some "INVITES" requests I can find in the log file, but some of them - I cannot, even that in sngrep I see the request and the call is successfully processed by kamailio. Also, for some requests i can see only partial data, not full call-flow as it supposed to be (for ex. i see only BYE requests, or ACK response instead of full call flow). Does someone have the same issue? If you don't - how are you dealing with kamailio log files? I'm thinking to send them to the central ELK stack, but if I have such problems by saving them locally - I don't see any reason to send them elsewhere. I may think that the problem could be in rsyslog itself, but how can I troubleshoot that? The traffic on the server is not very high - 30-50 concurrent calls. As a storage i'm using an SSD disk and xfs filesystem. Load on the disk - according to iostat/iotop - is minimum.  OS: CentOS Linux 7 (Core), Kamailio: 5.2.0 (x86_64/linux) 535e13 Thank You.